In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, causing the process to terminate in parse_nego_message.
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.1 | 5.9 | Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Product | Vendor | Version |
|---|---|---|
| Kerberos 5 | MIT | < 10.0.17763.2061 |
| Kerberos 5 | MIT | 12.2.1.3.0 |