A flaw was discovered in OpenLDAP before 2.4.57 leading to a double free and slapd crash in the saslAuthzTo processing, resulting in denial of service.
Weakness
The product calls free() twice on the same memory address.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openldap | Openldap | * | 2.4.57 (excluding) |
| Openldap | Ubuntu | bionic | * |
| Openldap | Ubuntu | devel | * |
| Openldap | Ubuntu | esm-infra-legacy/trusty | * |
| Openldap | Ubuntu | esm-infra/bionic | * |
| Openldap | Ubuntu | esm-infra/focal | * |
| Openldap | Ubuntu | esm-infra/xenial | * |
| Openldap | Ubuntu | focal | * |
| Openldap | Ubuntu | groovy | * |
| Openldap | Ubuntu | hirsute | * |
| Openldap | Ubuntu | impish | * |
| Openldap | Ubuntu | jammy | * |
| Openldap | Ubuntu | kinetic | * |
| Openldap | Ubuntu | lunar | * |
| Openldap | Ubuntu | mantic | * |
| Openldap | Ubuntu | noble | * |
| Openldap | Ubuntu | oracular | * |
| Openldap | Ubuntu | plucky | * |
| Openldap | Ubuntu | precise/esm | * |
| Openldap | Ubuntu | trusty | * |
| Openldap | Ubuntu | trusty/esm | * |
| Openldap | Ubuntu | upstream | * |
| Openldap | Ubuntu | xenial | * |
Potential Mitigations
References
- http://seclists.org/fulldisclosure/2021/May/64
- http://seclists.org/fulldisclosure/2021/May/65
- http://seclists.org/fulldisclosure/2021/May/70
- https://bugs.openldap.org/show_bug.cgi?id=9412
- https://git.openldap.org/openldap/openldap/-/commit/554dff1927176579d652f2fe60c90e9abbad4c65
- https://git.openldap.org/openldap/openldap/-/commit/5a2017d4e61a6ddc4dcb4415028e0d08eb6bca26
- https://git.openldap.org/openldap/openldap/-/commit/c0b61a9486508e5202aa2e0cfb68c9813731b439
- https://git.openldap.org/openldap/openldap/-/commit/d169e7958a3e0dc70f59c8374bf8a59833b7bdd8
- https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2021/02/msg00005.html
- https://security.netapp.com/advisory/ntap-20210226-0002/
- https://support.apple.com/kb/HT212529
- https://support.apple.com/kb/HT212530
- https://support.apple.com/kb/HT212531
- https://www.debian.org/security/2021/dsa-4845
- http://seclists.org/fulldisclosure/2021/May/64
- http://seclists.org/fulldisclosure/2021/May/65
- http://seclists.org/fulldisclosure/2021/May/70
- https://bugs.openldap.org/show_bug.cgi?id=9412
- https://git.openldap.org/openldap/openldap/-/commit/554dff1927176579d652f2fe60c90e9abbad4c65
- https://git.openldap.org/openldap/openldap/-/commit/5a2017d4e61a6ddc4dcb4415028e0d08eb6bca26
- https://git.openldap.org/openldap/openldap/-/commit/c0b61a9486508e5202aa2e0cfb68c9813731b439
- https://git.openldap.org/openldap/openldap/-/commit/d169e7958a3e0dc70f59c8374bf8a59833b7bdd8
- https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2021/02/msg00005.html
- https://security.netapp.com/advisory/ntap-20210226-0002/
- https://support.apple.com/kb/HT212529
- https://support.apple.com/kb/HT212530
- https://support.apple.com/kb/HT212531
- https://www.debian.org/security/2021/dsa-4845