A salt security update has been released for Debian GNU/Linux 9 LTS to address several vulnerabilities.

DLA 2480-1: salt security update

- -------------------------------------------------------------------------
Debian LTS Advisory DLA-2480-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Abhijith PA
December 04, 2020   https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package : salt
Version : 2016.11.2+ds-1+deb9u6
CVE ID : CVE-2020-16846 CVE-2020-17490 CVE-2020-25592

Several vulnerabilities were discovered in salt.

CVE-2020-16846

An unauthenticated user with network access to the Salt API can use
shell injections to run code on the Salt-API using the SSH client

CVE-2020-17490

When using the functions create_ca, create_csr, and
create_self_signed_cert in the tls execution module, it would not
ensure the key was created with the correct permissions.

CVE-2020-25592

Properly validate eauth credentials and tokens along with their Access
Control Lists – ACLs. Prior to this change, eauth was not properly
validated when calling Salt SSH via the salt-api. Any value for “eauth”
or “token” would allow a user to bypass authentication and make calls
to Salt SSH

For Debian 9 stretch, these problems have been fixed in version
2016.11.2+ds-1+deb9u6.

We recommend that you upgrade your salt packages.

For the detailed security status of salt please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/salt

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS