A memory corruption vulnerability exists in the post- authentication sshd process when an AES-GCM cipher (aes128-gcm@openssh.com or aes256-gcm@openssh.com) is selected during kex exchange. If exploited, this vulnerability might permit code execution with the privileges of the authenticated user and may therefore allow bypassing restricted shell/command configurations. OpenSSH versions 6.2 and 6.3 are affected when built against an OpenSSL that supports AES-GCM.
5a14ae6163dbd1bc2080d2d9e5abbece4f4a06fb6c639b17aeb2e9819c2b20d2