CVE-2022-42898
high-risk
Published 2022-12-25
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."
Do I need to act?
~
8.9% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10
High
NETWORK
/ LOW complexity
Affected Products (5)
Affected Vendors
References (22)
Third Party Advisory
https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c
Vendor Advisory
https://web.mit.edu/kerberos/advisories/
Release Notes
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
Third Party Advisory
https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c
Vendor Advisory
https://web.mit.edu/kerberos/advisories/
Release Notes
https://web.mit.edu/kerberos/krb5-1.19/
and 2 more references
52
/ 100
high-risk
Severity
30/34 · Critical
Exploitability
10/34 · Low
Exposure
12/34 · Low