Integer Overflow or Wraparound Affecting heimdal package, versions <1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm3


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.72% (88th percentile)

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  • Snyk IDSNYK-UBUNTU1604-HEIMDAL-3126914
  • published19 Nov 2022
  • disclosed25 Dec 2022

Introduced: 19 Nov 2022

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

How to fix?

Upgrade Ubuntu:16.04 heimdal to version 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream heimdal package and not the heimdal package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 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