CVE-2025-61912
Publication date 13 October 2025
Last updated 13 October 2025
Ubuntu priority
Description
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.
Status
Package | Ubuntu Release | Status |
---|---|---|
python-ldap | 25.10 questing |
Needs evaluation
|
25.04 plucky |
Needs evaluation
|
|
24.04 LTS noble |
Needs evaluation
|
|
22.04 LTS jammy |
Needs evaluation
|
|
20.04 LTS focal |
Needs evaluation
|
|
18.04 LTS bionic |
Needs evaluation
|
|
16.04 LTS xenial |
Needs evaluation
|
References
Other references
- 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 (main)
- https://github.com/python-ldap/python-ldap/commit/9f5b2effbafdf7af0e7064a7aa42d2739d373bd7 (python-ldap-3.4.5)
- https://github.com/python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bced50c49a3f
- https://github.com/python-ldap/python-ldap/releases/tag/python-ldap-3.4.5