Ubuntu has released security updates to address vulnerabilities in xerces-C++, OpenSSH, dotNET, go and Firefox. Exploitation of these vulnerabilities may allow an attacker to take control of affected system.
Users and administrators are encouraged to review Ubuntu Security Advisories USN-6579-1, USN-6560-2, USN-6578-1, USN-6574-1 and USN-6562-2 and apply necessary updates.