Ubuntu Security Notice USN-6592-1

Ubuntu Security Notice 6592-1 - It was discovered that libssh incorrectly handled the ProxyCommand and the ProxyJump features. A remote attacker could possibly use this issue to inject malicious code into the command of the features mentioned through the hostname parameter. It was discovered that libssh incorrectly handled return codes when performing message digest operations. A remote attacker could possibly use this issue to cause libssh to crash, obtain sensitive information, or execute arbitrary code.

attacker code command digest features inject issue libssh malicious message message digest notice operations parameter performing proxycommand return security security notice ubuntu usn