Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.
The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openssh | Openbsd | * | 4.4 (including) |
| Red Hat Enterprise Linux 2.1 | RedHat | openssh-0:3.1p1-21 | * |
| Red Hat Enterprise Linux 3 | RedHat | openssh-0:3.6.1p2-33.30.12 | * |
| Red Hat Enterprise Linux 4 | RedHat | openssh-0:3.9p1-8.RHEL4.17 | * |
| Openssh | Ubuntu | dapper | * |
| Openssh | Ubuntu | devel | * |
| Openssh | Ubuntu | edgy | * |
| Openssh | Ubuntu | feisty | * |