CVE-2021-36222
krb5 - security update
7.5
HIGH
CVSS 3.1
EPSS 6.6%
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.
How to fix CVE-2021-36222
To remediate CVE-2021-36222, upgrade the affected package to a fixed version below.
- —upgrade to 1.18.4-r0 or later
- —upgrade to 1.18.3-6 or later
- —upgrade to 1.17-3+deb10u2 or later
Is CVE-2021-36222 being exploited?
Moderate — EPSS is 6.6%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (3)
- from 0, < 1.18.4-r0
- from 0, < 1.18.3-6
- from 0, < 1.17-3+deb10u2
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 |