Ubuntu Security Notice USN-6138-1

Ubuntu Security Notice 6138-1 - Philip Turnbull discovered that libssh incorrectly handled rekeying with algorithm guessing. A remote attacker could use this issue to cause libssh to crash, resulting in a denial of service, or possibly execute arbitrary code. Kevin Backhouse discovered that libssh incorrectly handled verifying data signatures. A remote attacker could possibly use this issue to bypass authorization.

algorithm code crash data denial of service issue kevin libssh notice philip security security notice service signatures ubuntu usn