UBUNTU-CVE-2025-61912

Dashboard / Vulnerabilities / UBUNTU-CVE-2025-61912

UBUNTU-CVE-2025-61912

Summary:

Details: python-ldap is a lightweight directory access protocol (LDAP) client API for Python. In versions prior to 3.4.5, ldap.dn.escape_dn_chars() escapes \x00 incorrectly by emitting a backslash followed by a literal NUL byte instead of the RFC-4514 hex form \00. Any application that uses this helper to construct DNs from untrusted input can be made to consistently fail before a request is sent to the LDAP server (e.g., AD), resulting in a client-side denial of service. Version 3.4.5 contains a patch for the issue.

References: https://ubuntu.com/security/CVE-2025-61912, https://www.cve.org/CVERecord?id=CVE-2025-61912, https://github.com/python-ldap/python-ldap/security/advisories/GHSA-p34h-wq7j-h5v6, https://github.com/python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bced50c49a3f, https://github.com/python-ldap/python-ldap/commit/9f5b2effbafdf7af0e7064a7aa42d2739d373bd7, https://github.com/python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bced50c49a3f, https://github.com/python-ldap/python-ldap/releases/tag/python-ldap-3.4.5, https://ubuntu.com/security/notices/USN-7828-1