CVE-2023-39975

Published: Aug 16, 2023Modified: Jun 17, 2026

8.8

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 2.8 / Impact: 5.9

Source: NVD

Description

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.

Affected (1)

Products: Mit: Kerberos 5

Mit

1 product

Kerberos 5

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Mit Kerberos 5	From 1.21 to 1.21.2

Related CWEs

CWE-415

Double Free

The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.

References (12)

https://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840

Source: cve@mitre.org

Patch

https://github.com/krb5/krb5/compare/krb5-1.21.1-final...krb5-1.21.2-final

Source: cve@mitre.org

Patch

https://security.netapp.com/advisory/ntap-20230915-0014/

Source: cve@mitre.org

https://security.netapp.com/advisory/ntap-20240201-0005/

Source: cve@mitre.org

https://security.netapp.com/advisory/ntap-20240201-0008/

Source: cve@mitre.org

https://web.mit.edu/kerberos/www/advisories/

Source: cve@mitre.org

Vendor Advisory

https://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840