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3 vulnerabilities by python-ldap
CVE-2025-61912 (GCVE-0-2025-61912)
Vulnerability from cvelistv5 – Published: 2025-10-10 22:04 – Updated: 2025-10-14 14:58
VLAI
Title
python-ldap Vulnerable to Improper Encoding or Escaping of Output and 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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/python-ldap/python-ldap/securi… | x_refsource_CONFIRM |
| https://github.com/python-ldap/python-ldap/commit… | x_refsource_MISC |
| https://github.com/python-ldap/python-ldap/releas… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| python-ldap | python-ldap |
Affected:
< 3.4.5
|
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CVE-2025-61911 (GCVE-0-2025-61911)
Vulnerability from cvelistv5 – Published: 2025-10-10 22:02 – Updated: 2025-10-14 14:57
VLAI
Title
python-ldap has sanitization bypass in ldap.filter.escape_filter_chars
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`.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/python-ldap/python-ldap/securi… | x_refsource_CONFIRM |
| https://github.com/python-ldap/python-ldap/commit… | x_refsource_MISC |
| https://github.com/python-ldap/python-ldap/releas… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| python-ldap | python-ldap |
Affected:
< 3.4.5
|
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CVE-2021-46823 (GCVE-0-2021-46823)
Vulnerability from cvelistv5 – Published: 2022-06-18 15:27 – Updated: 2024-08-04 05:17
VLAI
Summary
python-ldap before 3.4.0 is vulnerable to a denial of service when ldap.schema is used for untrusted schema definitions, because of a regular expression denial of service (ReDoS) flaw in the LDAP schema parser. By sending crafted regex input, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/python-ldap/python-ldap/securi… | x_refsource_MISC |
| https://exchange.xforce.ibmcloud.com/vulnerabilit… | x_refsource_MISC |
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