CVE-2021-36222
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
Description
ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-36222
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2021:3576
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-36222.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 1.19.2-1 | |
| sles | affected | | |
| rocky | 8 | fixed | |
| debian | bookworm | fixed | 1.18.3-6 |
| debian | bullseye | fixed | 1.18.3-6 |
| debian | forky | fixed | 1.18.3-6 |
| debian | sid | fixed | 1.18.3-6 |
| debian | trixie | fixed | 1.18.3-6 |
References
Verify integrity in audit chain (admin only). AS-IS.