RCE in Saltstack Salt
CVE-2021-31607
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).
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.059 (93.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.038 · newest: 0.059 · change: +0.021
Affected products
- Saltstack Salt
- Fedoraproject Fedora — versions 33, 34, 35
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sec.stealthcopter.com/saltstack-snapper-minion-privledge-escaltion/ (Exploit, Patch, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/11/msg00009.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2021/dsa-5011 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202310-22 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-31607?
- CVE-2021-31607 is a high-severity vulnerability in Saltstack Salt, classified under OS Command Injection. CVSS score: 7.8/10. Published 2021-04-23.
- How severe is CVE-2021-31607?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-31607 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.