Amazon Linux 2 Security Advisory: ALAS2-2025-3083
Advisory Released Date: 2025-12-08
Advisory Updated Date: 2025-12-08
python-ldap is a lightweight directory access protocol (LDAP) client API for Python. In versions prior to 3.4.5, the sanitization method `ldap.filter.escape_filter_chars` can be tricked to skip escaping of special characters when a crafted `list` or `dict` is supplied as the `assertion_value` parameter, and the non-default `escape_mode=1` is configured. The method `ldap.filter.escape_filter_chars` supports 3 different escaping modes. `escape_mode=0` (default) and `escape_mode=2` happen to raise exceptions when a `list` or `dict` object is supplied as the `assertion_value` parameter. However, `escape_mode=1` computes without performing adequate logic to ensure a fully escaped return value. If an application relies on the vulnerable method in the `python-ldap` library to escape untrusted user input, an attacker might be able to abuse the vulnerability to launch ldap injection attacks which could potentially disclose or manipulate ldap data meant to be inaccessible to them. Version 3.4.5 fixes the issue by adding a type check at the start of the `ldap.filter.escape_filter_chars` method to raise an exception when the supplied `assertion_value` parameter is not of type `str`. (CVE-2025-61911)
Affected Packages:
python-ldap
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update python-ldap or yum update --advisory ALAS2-2025-3083 to update your system.
aarch64:
python-ldap-2.4.15-2.amzn2.0.7.aarch64
python-ldap-debuginfo-2.4.15-2.amzn2.0.7.aarch64
i686:
python-ldap-2.4.15-2.amzn2.0.7.i686
python-ldap-debuginfo-2.4.15-2.amzn2.0.7.i686
src:
python-ldap-2.4.15-2.amzn2.0.7.src
x86_64:
python-ldap-2.4.15-2.amzn2.0.7.x86_64
python-ldap-debuginfo-2.4.15-2.amzn2.0.7.x86_64