NULL Pointer Dereference Affecting krb5 package, versions <1.19.3-r0
Threat Intelligence
EPSS
0.38% (74th
percentile)
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Test your applications- Snyk ID SNYK-ALPINE317-KRB5-3140030
- published 24 Mar 2022
- disclosed 23 Aug 2021
Introduced: 23 Aug 2021
CVE-2021-37750 Open this link in a new tabHow to fix?
Upgrade Alpine:3.17 krb5 to version 1.19.3-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream krb5 package and not the krb5 package as distributed by Alpine.
See How to fix? for Alpine:3.17 relevant fixed versions and status.
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.
References
- https://github.com/krb5/krb5/commit/d775c95af7606a51bf79547a94fa52ddd1cb7f49
- https://github.com/krb5/krb5/releases
- https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MFCLW7D46E4VCREKKH453T5DA4XOLHU2/
- https://security.netapp.com/advisory/ntap-20210923-0002/
- https://web.mit.edu/kerberos/advisories/
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://www.starwindsoftware.com/security/sw-20220817-0004/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MFCLW7D46E4VCREKKH453T5DA4XOLHU2/
CVSS Scores
version 3.1