Ubuntu Security Notice USN-5527-1

Ubuntu Security Notice 5527-1 - It was discovered that Checkmk incorrectly handled authentication. An attacker could possibly use this issue to cause a race condition leading to information disclosure. It was discovered that Checkmk incorrectly handled certain inputs. An attacker could use these cross-site scripting issues to inject arbitrary html or javascript code to obtain sensitive information including user information, session cookies and valid credentials.