Description
PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."
References (11)
Core 11
Core References
Exploit, Issue Tracking, Patch, Third Party Advisory
https://bugzilla.samba.org/show_bug.cgi?id=15203
Third Party Advisory
https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c
Patch, Third Party Advisory
https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583
Vendor Advisory
https://web.mit.edu/kerberos/advisories/
Release Notes, Vendor Advisory
https://web.mit.edu/kerberos/krb5-1.19/
Vendor Advisory
https://web.mit.edu/kerberos/krb5-1.20/README-1.20.1.txt
Third Party Advisory
https://www.samba.org/samba/security/CVE-2022-42898.html
Vendor Advisory
https://security.netapp.com/advisory/ntap-20230216-0008/
Vendor Advisory
https://security.netapp.com/advisory/ntap-20230223-0001/
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/202309-06
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/202310-06
Scores
CVSS v3
8.8
EPSS
0.0873
EPSS Percentile
92.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-190
Status
published
Products (4)
heimdal_project/heimdal
< 7.7.1
mit/kerberos_5
1.20 (2 CPE variants)
mit/kerberos_5
1.8 - 1.19.4
samba/samba
< 4.15.12
Published
Dec 25, 2022
Tracked Since
Feb 18, 2026