Is CVE-2021-31607 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 4%.

What products does CVE-2021-31607 affect?

Tracked products affected include Salt. Check the version you run to see whether it is affected.

How do I fix CVE-2021-31607?

Apply the vendor fix promptly. An official patch or advisory is available. Upgrade affected products to a fixed version.

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CVE-2021-31607

Q: What is CVE-2021-31607?

CVE-2021-31607 is a high-severity software vulnerability (OS command injection) with a CVSS score of 7.8. 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

HIGH severity · CVSS 7.8 · OS command injection

7.8CVSS HIGH

Summary

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).

Impact & exploitability

Attack vectorLocal

Attack complexityLow

Privileges requiredLow

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)4%

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Salt

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

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

Additional information

NVD record
https://sec.stealthcopter.com/saltstack-snapper-minion-privledge-escaltion/Patch
https://lists.debian.org/debian-lts-announce/2021/11/msg00009.htmlAdvisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6BUWUF5VTENNP2ZYZBVFKPSUHLKLUBD5/Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ACVT7M4YLZRLWWQ6SGRK3C6TOF4FXOXT/Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LDKMAJXYFHM4USVX3H5V2GCCBGASWUSM/Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MBAHHSGZLEJRCG4DX6J4RBWJAAWH55RQ/Advisory
https://security.gentoo.org/glsa/202310-22Advisory
https://www.debian.org/security/2021/dsa-5011Advisory