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CVE-2020-16846

SaltStack — SaltStack Salt Shell Injection Vulnerability

SaltStack · CWE-78 — Operating system command injection · in CISA KEV since 2021-11-03

ExigentKEV since 2021 · listed over a yearCISA KEVActively Exploited
87

EVRS 87 of 100 Immediate

Out-of-Band / Urgent Remediation

Rank 248 of 2,960 tracked

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Why it scores 87

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and an EPSS probability of 0.996.

  • CISA KEVApplied
  • RansomwareDid not apply
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

  • salt2015.8.132016.3.82016.11.102017.7.82018.3.52019.2.63000.43001.2update to this version or later in your release line

Affected versions

  • salt (pip)affected < 2015.8.13, fixed in 2015.8.13affected >= 2016.3.0, < 2016.3.8, fixed in 2016.3.8affected >= 2016.11.0, < 2016.11.10, fixed in 2016.11.10affected >= 2017.5.0, < 2017.7.8, fixed in 2017.7.8affected >= 2018.2.0, < 2018.3.5, fixed in 2018.3.5affected >= 2019.2.0, < 2019.2.6, fixed in 2019.2.6affected >= 3000.0, < 3000.4, fixed in 3000.4affected >= 3001, < 3001.2, fixed in 3001.2

Remediation

Apply updates per vendor instructions.

Fixed versions from NVD and GitHub. Affected packages also in GitHub Advisory GHSA-qr38-h96j-2j3w (CC BY 4.0). It lists 1 more package; see GHSA-qr38-h96j-2j3w on GitHub for the full list.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 9.8 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.996 (99.95th pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Unknown or none CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2022-05-03 · KEV since 2021 · listed over a year CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. Public module exists Metasploit
EUVD cross-referenceENISA's record: CVSS 9.8 (v3.1), assigned by mitre. Listed ENISA EUVD

Description

NVD

An issue was discovered in SaltStack Salt through 3002. Sending crafted web requests to the Salt API, with the SSH client enabled, can result in shell injection.

What CISA says to do

Public module

Metasploit lists a public excellent-rank module for this CVE: SaltStack Salt REST API Arbitrary Command Execution (linux/http/saltstack_salt_api_cmd_exec). A module existing is not the same as active exploitation; see metasploit.com.