{"id":6673,"date":"2025-06-11T09:08:05","date_gmt":"2025-06-11T09:08:05","guid":{"rendered":"http:\/\/localhost\/?p=6673"},"modified":"2025-06-11T09:08:05","modified_gmt":"2025-06-11T09:08:05","slug":"cve-2025-27818","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=6673","title":{"rendered":"CVE-2025-27818"},"content":{"rendered":"<h2>Security Update News<\/h2>\n<h3>Update Information<\/h3>\n<table style=\"width:100%; border-collapse: collapse; margin-bottom: 20px;\">\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Title<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">CVE-2025-27818<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Update ID<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">CVE-2025-27818<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Type<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">cve<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Published<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">2025-06-10T08:15:22<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Last Updated<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">2025-06-10T16:15:36<\/td>\n<\/tr>\n<\/table>\n<h3>Security Impact<\/h3>\n<table style=\"width:100%; border-collapse: collapse; margin-bottom: 20px;\">\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">CVSS Score<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">8.8<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Severity<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd; color: #ff4444; font-weight: bold;\">HIGH<\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: left; padding: 8px; border: 1px solid #ddd; \">Attack Vector<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">NETWORK<\/td>\n<\/tr>\n<\/table>\n<h3>Affected CVEs<\/h3>\n<div style=\" padding: 15px; border: 1px solid #ddd; margin-bottom: 20px;\">\n<ul style=\"margin: 0; padding-left: 20px;\">\n<li>CVE-2025-27818<\/li>\n<\/ul>\n<\/div>\n<h3>Update Details<\/h3>\n<div style=\"; padding: 15px; border-left: 4px solid #4CAF50; margin-bottom: 20px;\">\nA possible security vulnerability has been identified in Apache Kafka.<br \/>This requires access to a alterConfig to the\u00a0cluster resource, or Kafka Connect worker, and the ability to create\/modify connectors on it with an arbitrary Kafka client SASL JAAS config<br \/>and a SASL-based security protocol, which has been possible on Kafka clusters since Apache Kafka 2.0.0 (Kafka Connect 2.3.0).<br \/>When configuring the broker via config file or AlterConfig command, or connector via the Kafka Kafka Connect REST API, an authenticated operator\u00a0can set the `sasl.jaas.config`<br \/>property for any of the connector&#8217;s Kafka clients to &#8220;com.sun.security.auth.module.LdapLoginModule&#8221;, which can be done via the<br \/>`producer.override.sasl.jaas.config`, `consumer.override.sasl.jaas.config`, or `admin.override.sasl.jaas.config` properties.<br \/>This will allow the server to connect to the attacker&#8217;s LDAP server<br \/>and deserialize the LDAP response, which the attacker can use to execute java deserialization gadget chains on the Kafka connect server.<br \/>Attacker can cause unrestricted deserialization of untrusted data (or) RCE vulnerability when there are gadgets in the classpath.<\/p>\n<p>Since Apache Kafka 3.0.0, users are allowed to specify these properties in connector configurations for Kafka Connect clusters running with out-of-the-box<br \/>configurations. Before Apache Kafka 3.0.0, users may not specify these properties unless the Kafka Connect cluster has been reconfigured with a connector<br \/>client override policy that permits them.<\/p>\n<p>Since Apache Kafka 3.9.1\/4.0.0, we have added a system property (&#8220;-Dorg.apache.kafka.disallowed.login.modules&#8221;) to disable the problematic login modules usage<br \/>in SASL JAAS configuration. Also by default &#8220;com.sun.security.auth.module.JndiLoginModule,com.sun.security.auth.module.LdapLoginModule&#8221; are disabled in Apache Kafka Connect 3.9.1\/4.0.0. <\/p>\n<p>We advise the Kafka users to validate connector configurations and only allow trusted LDAP configurations. Also examine connector dependencies for <br \/>vulnerable versions and either upgrade their connectors, upgrading that specific dependency, or removing the connectors as options for remediation. Finally,<br \/>in addition to leveraging the &#8220;org.apache.kafka.disallowed.login.modules&#8221; system property, Kafka Connect users can also implement their own connector<br \/>client config override policy, which can be used to control which Kafka client properties can be overridden directly in a connector config and which cannot.\n<\/div>\n<p><a href=\"https:\/\/web.nvd.nist.gov\/view\/vuln\/detail?vulnId=CVE-2025-27818\" target=\"_blank\" style=\"display: inline-block; color: white; padding: 10px 20px; text-decoration: none; border-radius: 4px;\">View Advisory Details<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Security Update News Update Information Title CVE-2025-27818 Update ID CVE-2025-27818 Type cve Published 2025-06-10T08:15:22 Last Updated 2025-06-10T16:15:36 Security Impact CVSS Score 8.8 Severity HIGH Attack&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[6,8,41,12,15,13,7,11,5],"class_list":["post-6673","post","type-post","status-publish","format-standard","hentry","category-category_news","tag-cve","tag-cvss","tag-cvss-88","tag-exploit","tag-high","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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