Source: python-ldap
Version: 3.4.4-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>

Hi,

The following vulnerability was published for python-ldap.

CVE-2025-61912[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2025-61912
    https://www.cve.org/CVERecord?id=CVE-2025-61912
[1] 
https://github.com/python-ldap/python-ldap/security/advisories/GHSA-p34h-wq7j-h5v6
[2] 
https://github.com/python-ldap/python-ldap/commit/9f5b2effbafdf7af0e7064a7aa42d2739d373bd7

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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