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2 vulnerabilities found for python-ldap by python-ldap

CVE-2025-61912 (GCVE-0-2025-61912)
Vulnerability from nvd
Published
2025-10-10 22:04
Modified
2025-10-14 14:58
Severity ?
5.5 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CWE
  • CWE-116 - Improper Encoding or Escaping of Output
  • CWE-170 - Improper Null Termination
Summary
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
Impacted products
Vendor Product Version
python-ldap python-ldap Version: < 3.4.5
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CVE-2025-61911 (GCVE-0-2025-61911)
Vulnerability from nvd
Published
2025-10-10 22:02
Modified
2025-10-14 14:57
Severity ?
5.5 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
CWE
  • CWE-75 - Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Summary
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`.
References
Impacted products
Vendor Product Version
python-ldap python-ldap Version: < 3.4.5
 Create a notification for this product.
Show details on NVD website

To clipboard 

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