An integer underflow was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Certificate List Exact Assertion processing, resulting in denial of service.
Weakness
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
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 | * |
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=9427
- https://git.openldap.org/openldap/openldap/-/commit/91dccd25c347733b365adc74cb07d074512ed5ad
- 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=9427
- https://git.openldap.org/openldap/openldap/-/commit/91dccd25c347733b365adc74cb07d074512ed5ad
- 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