The krb5_gss_process_context_token function in lib/gssapi/krb5/process_context_token.c in the libgssapi_krb5 library in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly maintain security-context handles, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via crafted GSSAPI traffic, as demonstrated by traffic to kadmind.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Kerberos_5 | Mit | 1.11 (including) | 1.11 (including) |
| Kerberos_5 | Mit | 1.11.1 (including) | 1.11.1 (including) |
| Kerberos_5 | Mit | 1.11.2 (including) | 1.11.2 (including) |
| Kerberos_5 | Mit | 1.11.3 (including) | 1.11.3 (including) |
| Kerberos_5 | Mit | 1.11.4 (including) | 1.11.4 (including) |
| Kerberos_5 | Mit | 1.11.5 (including) | 1.11.5 (including) |
| Kerberos_5 | Mit | 1.12 (including) | 1.12 (including) |
| Kerberos_5 | Mit | 1.12.1 (including) | 1.12.1 (including) |
| Kerberos_5 | Mit | 1.12.2 (including) | 1.12.2 (including) |
| Kerberos_5 | Mit | 1.13 (including) | 1.13 (including) |
| Red Hat Enterprise Linux 6 | RedHat | krb5-0:1.10.3-37.el6_6 | * |
| Red Hat Enterprise Linux 7 | RedHat | krb5-0:1.12.2-14.el7 | * |
| Krb5 | Ubuntu | devel | * |
| Krb5 | Ubuntu | lucid | * |
| Krb5 | Ubuntu | precise | * |
| Krb5 | Ubuntu | trusty | * |
| Krb5 | Ubuntu | upstream | * |
| Krb5 | Ubuntu | utopic | * |