CVE-2021-37750
6.5
MEDIUM
CVSS 3.1
EPSS 0.72%
Description
The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.5 and 1.19.x before 1.19.3 has a NULL pointer dereference in kdc/do_tgs_req.c via a FAST inner body that lacks a server field.
How to fix CVE-2021-37750
To remediate CVE-2021-37750, upgrade the affected package to a fixed version below.
- Alpine/krb5—upgrade to 1.18.5-r0 or later
- Debian/krb5—upgrade to 1.18.3-6+deb11u1 or later
Is CVE-2021-37750 being exploited?
Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.18.5-r0
- from 0, < 1.18.3-6+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |