An issue was discovered in SaltStack Salt before 2019.2.4 and 3000 before 3000.2. The salt-master process ClearFuncs class does not properly validate method calls. This allows a remote user to access some methods without authentication. These methods can be used to retrieve user tokens from the salt master and/or run arbitrary commands on salt minions.

Affected: Ubuntu:16.04:LTS: salt, Ubuntu:18.04:LTS: salt

It was discovered that Salt allows remote attackers to determine which files exist on the server. An attacker could use that to extract sensitive information. (CVE-2018-15750)

It was discovered that Salt has a vulnerability that allows an user to bypass authentication. An attacker could use that to extract sensitive information, execute abritrary code or crash the server. (CVE-2018-15751)

It was discovered that Salt is vulnerable to command injection. This allows an unauthenticated attacker with network access to the API endpoint to execute arbitrary code on the salt-api host. (CVE-2019-17361)

It was discovered that Salt incorrectly validated method calls and sanitized paths. A remote attacker could possibly use this issue to access some methods without authentication. (CVE-2020-11651, CVE-2020-11652)