CVE-2022-42898
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.42%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 6.42% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- mit/kerberos 5 · heimdal project/heimdal · samba/samba
- Source
- cve@mitre.org
References
- https://bugzilla.samba.org/show_bug.cgi?id=15203Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3cThird Party Advisory
- https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583Patch, Third 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 Notes, Vendor 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=15203Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3cThird Party Advisory
- https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583Patch, Third 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 Notes, Vendor 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.