CVE-2023-39975

HIGH EPSS 65.2%
Published Aug 16, 20232y ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Aug 16, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
65.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-415

Affected Products 1

VendorProductVersionRange
mitkerberos_5*≥1.21  –  <1.21.2

References 6

  • github.com https://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840
    Patch
  • github.com https://github.com/krb5/krb5/compare/krb5-1.21.1-final...krb5-1.21.2-final
    Patch
  • security.netapp.com https://security.netapp.com/advisory/ntap-20230915-0014/
  • security.netapp.com https://security.netapp.com/advisory/ntap-20240201-0005/
  • security.netapp.com https://security.netapp.com/advisory/ntap-20240201-0008/
  • web.mit.edu https://web.mit.edu/kerberos/www/advisories/
    Vendor Advisory

Remediation

  • github.com https://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840
    Patch
  • github.com https://github.com/krb5/krb5/compare/krb5-1.21.1-final...krb5-1.21.2-final
    Patch