Double Free Affecting krb5-debugsource package, versions <0:1.21-3.amzn2023.0.3


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.22% (60th percentile)

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  • Snyk IDSNYK-AMZN2023-KRB5DEBUGSOURCE-5887774
  • published8 Sept 2023
  • disclosed16 Aug 2023

Introduced: 16 Aug 2023

CVE-2023-39975  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 krb5-debugsource to version 0:1.21-3.amzn2023.0.3 or higher.
This issue was patched in ALAS2023-2023-321.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-debugsource package and not the krb5-debugsource package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another.

CVSS Scores

version 3.1