In SaltStack Salt 2016.9 through 3002.6, a command injection vulnerability exists in the snapper module that allows for local privilege escalation on a minion. The attack requires that a file is created with a pathname that is backed up by snapper, and that the master calls the snapper.diff function (which executes popen unsafely).
Created salt tracking bugs for this issue:
Affects: fedora-all [bug 1953066]
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):
Upstream fix: https://github.com/saltstack/salt/commit/43e4ac985a2fc5f0d596c9fc6bc700b0d1af5344