Vulnerability 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."
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mit | Kerberos 5 | >= 1.8, < 1.19.4 |
| Heimdal Project | Heimdal | < 7.7.1 |
| Samba | Samba | < 4.15.12 |
Related Weaknesses (CWE)
References
- https://bugzilla.samba.org/show_bug.cgi?id=15203ExploitIssue TrackingPatch
- https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3cThird Party Advisory
- https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583PatchThird Party Advisory
- 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/
- https://web.mit.edu/kerberos/advisories/Vendor Advisory
- https://web.mit.edu/kerberos/krb5-1.19/Release NotesVendor Advisory
- https://web.mit.edu/kerberos/krb5-1.20/README-1.20.1.txtVendor Advisory
- https://www.samba.org/samba/security/CVE-2022-42898.htmlThird Party Advisory
- https://bugzilla.samba.org/show_bug.cgi?id=15203ExploitIssue TrackingPatch
- https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3cThird Party Advisory
- https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583PatchThird Party Advisory
- https://security.gentoo.org/glsa/202309-06
FAQ
What is CVE-2022-42898?
CVE-2022-42898 is a vulnerability with a CVSS score of 8.8 (HIGH). 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) ...
How severe is CVE-2022-42898?
CVE-2022-42898 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-42898?
Check the references section above for vendor advisories and patch information. Affected products include: Mit Kerberos 5, Heimdal Project Heimdal, Samba Samba.