CVE-2022-42898
HIGH severity · CVSS 8.8 · Integer overflow
8.8CVSS HIGH
Summary
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."
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)6%
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://bugzilla.samba.org/show_bug.cgi?id=15203 ↗
Additional information
- NVD record
- https://bugzilla.samba.org/show_bug.cgi?id=15203Patch
- https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583Patch
- https://web.mit.edu/kerberos/advisories/Advisory
- https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3cAdvisory
- https://security.gentoo.org/glsa/202309-06
- https://security.gentoo.org/glsa/202310-06
- https://security.netapp.com/advisory/ntap-20230216-0008/
- https://security.netapp.com/advisory/ntap-20230223-0001/