Integer Overflow or Wraparound Affecting krb5-libs package, versions <0:1.15.1-55.el7_9


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.09% (85th percentile)

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  • Snyk IDSNYK-RHEL7-KRB5LIBS-8016421
  • published17 Sept 2024
  • disclosed15 Nov 2022

Introduced: 15 Nov 2022

CVE-2022-42898  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade RHEL:7 krb5-libs to version 0:1.15.1-55.el7_9 or higher.
This issue was patched in RHSA-2022:8640.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-libs package and not the krb5-libs package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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 Scores

version 3.1