The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "openssh-client" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "openssh-client-dbgsym" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "openssh-client-udeb" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "openssh-client-udeb-dbgsym" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "openssh-server" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "openssh-server-dbgsym" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "openssh-server-udeb" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "openssh-server-udeb-dbgsym" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "openssh-sftp-server" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "openssh-sftp-server-dbgsym" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "ssh" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "ssh-askpass-gnome" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "ssh-askpass-gnome-dbgsym" }, { "binary_version": "1:6.6p1-2ubuntu2.8", "binary_name": "ssh-krb5" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "openssh-client" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "openssh-client-dbgsym" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "openssh-client-ssh1" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "openssh-client-ssh1-dbgsym" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "openssh-client-udeb" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "openssh-client-udeb-dbgsym" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "openssh-server" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "openssh-server-dbgsym" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "openssh-server-udeb" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "openssh-server-udeb-dbgsym" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "openssh-sftp-server" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "openssh-sftp-server-dbgsym" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "ssh" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "ssh-askpass-gnome" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "ssh-askpass-gnome-dbgsym" }, { "binary_version": "1:7.2p2-4ubuntu2.1", "binary_name": "ssh-krb5" } ] }