CVE-2020-36230 — Reachable Assertion in Openldap

CWE-617 — Reachable Assertion13 documents9 sources
Severity
7.5HIGHNVD
EPSS
1.9%
top 16.64%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
OpenldapApple MAC OS XApple Macos+2 more
Timeline
PublishedJan 26
Latest updateAug 24

Description

A flaw was discovered in OpenLDAP before 2.4.57 leading in an assertion failure in slapd in the X.509 DN parsing in decode.c ber_next_element, resulting in denial of service.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages6 packages

▶NVDopenldap/openldap< 2.4.57
▶Debianopenldap/openldap< 2.4.57+dfsg-1+3
▶Ubuntuopenldap/openldap< 2.4.31-1+nmu2ubuntu8.5+esm8
▶NVDapple/macos11.1 — 11.4
▶NVDapple/mac_os_x10.14.0 — 10.14.6+1

Also affects: Debian Linux 10.0, 9.0

Patches

Patch: git.openldap.org ↗Patch: git.openldap.org ↗

🔴Vulnerability Details

4
OSV
openldap vulnerabilities↗2025-08-24
▶
GHSA
GHSA-5g5w-44wh-969g: A flaw was discovered in OpenLDAP before 2↗2022-05-24
▶
OSV
CVE-2020-36230: A flaw was discovered in OpenLDAP before 2↗2021-01-26
▶
CVEList
CVE-2020-36230: A flaw was discovered in OpenLDAP before 2↗2021-01-25
▶

📋Vendor Advisories

8
Ubuntu
OpenLDAP vulnerabilities↗2025-08-24
▶
Apple
CVE-2020-36230: macOS Big Sur 11.4↗2021-05-24
▶
Apple
CVE-2020-36230: Security Update 2021-003 Catalina↗2021-05-24
▶
Apple
CVE-2020-36230: Security Update 2021-004 Mojave↗2021-05-24
▶
Ubuntu
OpenLDAP vulnerabilities↗2021-02-08
▶
CVE-2020-36230 — Reachable Assertion in Openldap | cvebase