python-ldap: python-ldap before 3.4.0 is vulnerable to a denial of service when ldap.schema is used for untrusted schema definitio...
CVE-2021-46823 is fixed in 4 products on 1 platform, first by python-ldap 3.0.0-1ubuntu0.2, released June 18, 2022. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-ldap · Debian 12.15 (bookworm) | 3.4.0-1 | DEBIAN-CVE-2021-46823 | Jun 18, 2022 |
| python-ldap · Debian 13.5 (trixie) | 3.4.0-1 | DEBIAN-CVE-2021-46823 | Jun 18, 2022 |
| python-ldap · Debian 14 | 3.4.0-1 | DEBIAN-CVE-2021-46823 | Jun 18, 2022 |
| python-ldap · Ubuntu 18.04.6 LTS (bionic) | 3.0.0-1ubuntu0.2 | python-ldap 3.0.0-1ubuntu0.2 | Jun 18, 2022 |
| python-pyldap · Ubuntu 18.04.6 LTS (bionic) | 3.0.0-1ubuntu0.2 | python-pyldap 3.0.0-1ubuntu0.2 | Jun 18, 2022 |
| python3-ldap · Ubuntu 18.04.6 LTS (bionic) | 3.0.0-1ubuntu0.2 | python3-ldap 3.0.0-1ubuntu0.2 | Jun 18, 2022 |
| python3-ldap · Ubuntu 20.04 LTS (focal) | 3.2.0-4ubuntu2.1 | python3-ldap 3.2.0-4ubuntu2.1 | Jun 18, 2022 |
| python3-ldap · Ubuntu 22.04.1 LTS (jammy) | 3.2.0-4ubuntu7.1 | python3-ldap 3.2.0-4ubuntu7.1 | Jun 18, 2022 |
| python3-pyldap · Ubuntu 18.04.6 LTS (bionic) | 3.0.0-1ubuntu0.2 | python3-pyldap 3.0.0-1ubuntu0.2 | Jun 18, 2022 |
| python3-pyldap · Ubuntu 20.04 LTS (focal) | 3.2.0-4ubuntu2.1 | python3-pyldap 3.2.0-4ubuntu2.1 | Jun 18, 2022 |
| python3-pyldap · Ubuntu 22.04.1 LTS (jammy) | 3.2.0-4ubuntu7.1 | python3-pyldap 3.2.0-4ubuntu7.1 | Jun 18, 2022 |
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