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CVE-2022-42898

Date: December 24, 2022

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."

Language: C

Severity Score

Related Resources (17)

https://web.mit.edu/kerberos/krb5-1.19/
https://security.netapp.com/advisory/ntap-20230223-0001/
https://access.redhat.com/security/cve/CVE-2022-42898
https://security.alpinelinux.org/vuln/CVE-2022-42898
https://security.gentoo.org/glsa/202310-06
https://nvd.nist.gov/vuln/detail/CVE-2022-42898
https://www.samba.org/samba/security/CVE-2022-42898.html
https://security-tracker.debian.org/tracker/CVE-2022-42898
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://people.canonical.com/~ubuntu-security/cve/CVE-2022-42898
https://security.netapp.com/advisory/ntap-20230216-0008/
https://bugzilla.samba.org/show_bug.cgi?id=15203
https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583
https://web.mit.edu/kerberos/advisories/
https://security.gentoo.org/glsa/202309-06
https://www.mend.io/vulnerability-database/CVE-2022-42898

Severity Score

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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