CVE-2022-42898

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."

Affected Software

Weaknesses

• n/a

ADP Enrichment

CVE Program Container

Additional References

• https://web.mit.edu/kerberos/advisories/
• https://www.samba.org/samba/security/CVE-2022-42898.html
• https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583
• https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c
• https://web.mit.edu/kerberos/krb5-1.20/README-1.20.1.txt
• https://web.mit.edu/kerberos/krb5-1.19/
• https://bugzilla.samba.org/show_bug.cgi?id=15203
• https://security.netapp.com/advisory/ntap-20230216-0008/
• https://security.netapp.com/advisory/ntap-20230223-0001/
• https://security.gentoo.org/glsa/202309-06
• https://security.gentoo.org/glsa/202310-06

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://web.mit.edu/kerberos/advisories/
• https://www.samba.org/samba/security/CVE-2022-42898.html
• https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583
• https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c
• https://web.mit.edu/kerberos/krb5-1.20/README-1.20.1.txt
• https://web.mit.edu/kerberos/krb5-1.19/
• https://bugzilla.samba.org/show_bug.cgi?id=15203
• https://security.netapp.com/advisory/ntap-20230216-0008/
• https://security.netapp.com/advisory/ntap-20230223-0001/
• https://security.gentoo.org/glsa/202309-06
• https://security.gentoo.org/glsa/202310-06

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