high
7.8
CWE
77 78
Advisory Published
Advisory Published
Updated

CVE-2021-31607: Command Injection

First published: Fri Apr 23 2021(Updated: )

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).

Credit: cve@mitre.org cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
debian/salt
2018.3.4+dfsg1-6+deb10u3
3002.6+dfsg1-4+deb11u1
3004.1+dfsg-2.2
SaltStack Salt>=2016.9<=3002.6
Fedoraproject Fedora=33
Fedoraproject Fedora=34
Fedoraproject Fedora=35
debian/salt<=2018.3.4+dfsg1-6<=2018.3.4+dfsg1-6+deb10u2<=3002.6+dfsg1-1
SaltStack Salt
pip/salt>=2016.11.0<=3002.6
3003rc1

Remedy

https://sec.stealthcopter.com/saltstack-snapper-minion-privledge-escaltion/

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2021-31607?

    CVE-2021-31607 is a command injection vulnerability in the snapper module of SaltStack Salt 2016.9 through 3002.6, allowing for local privilege escalation on a minion.

  • What is the severity of CVE-2021-31607?

    The severity of CVE-2021-31607 is high with a CVSS score of 7.8.

  • How does CVE-2021-31607 work?

    CVE-2021-31607 requires the creation of a file with a backed-up pathname by snapper and the master calling the snapper.diff function, leading to command injection and potential privilege escalation.

  • Which versions of SaltStack Salt are affected by CVE-2021-31607?

    SaltStack Salt versions 2016.9 through 3002.6 are affected by CVE-2021-31607.

  • How can I fix CVE-2021-31607?

    To fix CVE-2021-31607, update to SaltStack Salt version 2018.3.4+dfsg1-6+deb10u3 or 3002.6+dfsg1-4+deb11u1 or 3004.1+dfsg-2.2, as recommended by Debian.

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