Arch Linux: ASA-202005-1 Critical: Salt Command Execution and Access Issues

The package salt before version 2019.2.4-1 is vulnerable to multiple issues including arbitrary command execution and arbitrary filesystem access.

Arch Linux Security Advisory ASA-202005-1
========================================
Severity: Critical
Date    : 2020-05-05
CVE-ID  : CVE-2020-11651 CVE-2020-11652
Package : salt
Type    : multiple issues
Remote  : Yes
Link    : https://security.archlinux.org/AVG-1147

Summary
======
The package salt before version 2019.2.4-1 is vulnerable to multiple
issues including arbitrary command execution and arbitrary filesystem
access.

Resolution
=========
Upgrade to 2019.2.4-1.

# pacman -Syu "salt>=2019.2.4-1"

The problems have been fixed upstream in version 2019.2.4.

Workaround
=========
Do not expose salt-master to the internet.

Description
==========
- CVE-2020-11651 (arbitrary command execution)

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.

- CVE-2020-11652 (arbitrary filesystem access)

An issue was discovered in SaltStack Salt before 2019.2.4 and 3000
before 3000.2. The salt-master process ClearFuncs class allows access
to some methods that improperly sanitize paths. These methods allow
arbitrary directory access to authenticated users.

Impact
=====
A remote unauthenticated user can execute arbitrary commands and access
files on the affected host.

References
=========
https://docs.saltproject.io/en/latest/topics/releases/2019.2.4.html
https://github.com/saltstack/salt/blob/v3000.2_docs/doc/topics/releases/3000.2.rst
https://github.com/saltstack/salt/commit/a67d76b15615983d467ed81371b38b4a17e4f3b7
https://github.com/saltstack/salt/commit/cce7abad9c22d9d50ccee2813acabff8deca35dd
https://security.archlinux.org/CVE-2020-11651
https://security.archlinux.org/CVE-2020-11652