The setup_server_realm function in main.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.7, when multiple realms are configured, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Kerberos_5 | Mit | * | 1.10.7 (excluding) |
| Red Hat Enterprise Linux 5 | RedHat | krb5-0:1.6.1-78.el5 | * |
| Red Hat Enterprise Linux 6 | RedHat | krb5-0:1.10.3-33.el6 | * |
| Krb5 | Ubuntu | lucid | * |
| Krb5 | Ubuntu | precise | * |
| Krb5 | Ubuntu | quantal | * |
| Krb5 | Ubuntu | raring | * |
| Krb5 | Ubuntu | saucy | * |
| Krb5 | Ubuntu | upstream | * |