{"id":76087,"date":"2025-09-23T07:54:20","date_gmt":"2025-09-23T07:54:20","guid":{"rendered":""},"modified":"2025-10-28T11:37:25","modified_gmt":"2025-10-28T17:37:25","slug":"cve-2025-55113-a-high-risk-vulnerability-in-access-control-list-enforcement-in-control-m-agent","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-55113-a-high-risk-vulnerability-in-access-control-list-enforcement-in-control-m-agent\/","title":{"rendered":"CVE-2025-55113: A High-Risk Vulnerability in Access Control List Enforcement in Control-M\/Agent<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The CVE-2025-55113 vulnerability is a serious, high-risk issue that directly affects users of the Control-M\/Agent software, specifically versions 9.0.18 to 9.0.20 and potentially earlier unsupported versions. It is related to the enforcement of the Access Control List (ACL) by the Control-M\/Agent, specifically when the C router is in use. This vulnerability is particularly significant due to its potential to allow an attacker to bypass configured ACLs using a specially crafted certificate, potentially leading to system<\/a> compromise or data leakage.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-55113
\nSeverity: High Risk (CVSS: 9.0)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise and potential<\/a> data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Control-M\/Agent | 9.0.18 – 9.0.20 (and potentially earlier unsupported versions<\/a>)<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability stems from how the Access<\/a> Control List (ACL) is enforced by the Control-M\/Agent when the C router is in use. Specifically, verification stops at the first NULL byte encountered in the email address referenced in the client certificate. An attacker can exploit this vulnerability by using a specially crafted certificate with a null byte, which could potentially allow<\/a> them to bypass the configured ACLs.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

A potential exploitation of this vulnerability<\/a> might look like the following, where the attacker uses a specially crafted certificate with a NULL byte in the email address:<\/p>\n

openssl req -new -newkey rsa:2048 -days 365 -nodes -x509 -keyout server.key -out server.crt -subj \/C=US\/ST=Denial\/L=Springfield\/O=Dis\/CN=www.example.com\/emailAddress=attacker\\0@example.com<\/code><\/pre>\n
In this example, the email address `attackerIn this example, the email address `attacker\\0@example.com` includes a NULL byte (`\\0`), which could cause the verification process to stop, allowing the attacker to potentially bypass the ACLs@example.com` includes a NULL byte (`In this example, the email address `attacker\\0@example.com` includes a NULL byte (`\\0`), which could cause the verification process to stop, allowing the attacker to potentially bypass the ACLs`), which could cause the verification process to stop, allowing the attacker to potentially<\/a> bypass the ACLs. Note that this is a conceptual and simplified example, and actual exploitation of the vulnerability would likely involve more complex steps.<\/p>\n
Recommendations for Mitigation<\/strong><\/p>\n
It’s recommended to apply the vendor’s patch to address this vulnerability<\/a>. If the patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation strategy can help protect against potential attacks.
\nHowever, these measures should not be considered a long-term solution since they may not fully protect against all possible exploitation scenarios. Therefore, updating the software to a version where the vulnerability<\/a> is fixed is the best course of action.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The CVE-2025-55113 vulnerability is a serious, high-risk issue that directly affects users of the Control-M\/Agent software, specifically versions 9.0.18 to 9.0.20 and potentially earlier unsupported versions. It is related to the enforcement of the Access Control List (ACL) by the Control-M\/Agent, specifically when the C router is in use. This vulnerability is particularly significant […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[99],"product":[100],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-76087","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-openssl","product-openssl-libssl"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t