CVE-2023-39975

krb5: double-free in KDC TGS processing

Published Aug 16, 2023 CVSS 3.1 · 8.8 High EPSS 1.5% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Feb 25, 2026, 5:20 PM
Reserved
Aug 7, 2023, 12:00 AM
Status
Modified
Published
Aug 16, 2023, 3:15 PM
Modified
Jun 17, 2026, 6:13 AM
Severity
Moderate
Public date
Aug 16, 2023, 12:00 AM