CVE-2020-36221
openldap - security update
7.5
HIGH
CVSS 3.1
EPSS 66.2%
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).
How to fix CVE-2020-36221
To remediate CVE-2020-36221, upgrade the affected package to a fixed version below.
- Alpine/openldap—upgrade to 2.4.57-r0 or later
- —upgrade to 2.4.57 or later
- —upgrade to 2.4.57+dfsg-1 or later
- —upgrade to 2.4.44+dfsg-5+deb9u7 or later
- —upgrade to 2.4.47+dfsg-3+deb10u5 or later
Is CVE-2020-36221 being exploited?
Likely — EPSS is 66.2%, placing CVE-2020-36221 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (5)
- from 0, < 2.4.57-r0
- from 0, < 2.4.57
- from 0, < 2.4.57+dfsg-1
- from 0, < 2.4.44+dfsg-5+deb9u7
- from 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 |