CVE-2023-39975
Published: August 16, 2023Last modified: September 16, 2023
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.8 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | krb5 | Not affected (1.20.1-r0) |
| Stream | krb5 | Not affected (1.21.2-r0) |
References
- https://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840
- https://github.com/krb5/krb5/compare/krb5-1.21.1-final...krb5-1.21.2-final
- https://security.netapp.com/advisory/ntap-20230915-0014/
- https://security.netapp.com/advisory/ntap-20240201-0005/
- https://security.netapp.com/advisory/ntap-20240201-0008/
- https://web.mit.edu/kerberos/www/advisories/