An issue was discovered in ClusterLabs Hawk 2.x through 2.3.0-x. There is a Ruby shell code injection issue via the hawk_remember_me_id parameter in the login_from_cookie cookie. The user logout routine could be used by unauthenticated remote attackers to execute code as hauser.
https://www.openwall.com/lists/oss-security/2021/01/12/3
https://github.com/ClusterLabs/hawk/releases