CVE-2020-36221
HIGH7.5EPSS 66.2%openldap - security update
Published: 1/26/2021Modified: 4/28/2026
Description
An integer underflow was discovered in OpenLDAP before 2.4.57 leading to slapd crashes in the Certificate Exact Assertion processing, resulting in denial of service (schema_init.c serialNumberAndIssuerCheck).
Affected packages (5)
- Alpine/openldapfrom 0, < 2.4.57-r0
- Bitnami/openldapfrom 0, < 2.4.57
- Debian/openldapfrom 0, < 2.4.57+dfsg-1
- Debian/openldapfrom 0, < 2.4.44+dfsg-5+deb9u7
- Debian/openldapfrom 0, < 2.4.47+dfsg-3+deb10u5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (19)
- ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2020-36221
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2020-36221
- WEBhttps://bugs.openldap.org/show_bug.cgi?id=9404
- WEBhttps://bugs.openldap.org/show_bug.cgi?id=9424
- WEBhttp://seclists.org/fulldisclosure/2021/May/64
- WEBhttp://seclists.org/fulldisclosure/2021/May/65
- WEBhttp://seclists.org/fulldisclosure/2021/May/70
- WEBhttps://git.openldap.org/openldap/openldap/-/commit/38ac838e4150c626bbfa0082b7e2cf3a2bb4df31
- WEBhttps://git.openldap.org/openldap/openldap/-/commit/58c1748e81c843c5b6e61648d2a4d1d82b47e842
- WEBhttps://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57
- WEBhttps://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- WEBhttps://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- WEBhttps://lists.debian.org/debian-lts-announce/2021/02/msg00005.html
- WEBhttps://nvd.nist.gov/vuln/detail/CVE-2020-36221
- WEBhttps://security.netapp.com/advisory/ntap-20210226-0002/
- WEBhttps://support.apple.com/kb/HT212529
- WEBhttps://support.apple.com/kb/HT212530
- WEBhttps://support.apple.com/kb/HT212531
- WEBhttps://www.debian.org/security/2021/dsa-4845