Assessment
Why it matters
CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 96.6%; technical severity is CVSS 9.8.
An issue was discovered in SaltStack Salt before 2019.2.4 and 3000 before 3000.2. The salt-master process ClearFuncs class does not properly validate method calls. This allows a remote user to access some methods without authentication. These methods can be used to retrieve user tokens from the salt master and/or run arbitrary commands on salt minions.
Who should care
- Teams operating Ubuntu Linux, Debian Linux, Leap +2 more
- Vulnerability and exposure management teams
- Security operations teams monitoring exploitation activity
Response plan
What I would do
- Confirm whether Ubuntu Linux, Debian Linux, Leap +2 more is present in the environment.
- Identify affected versions and establish whether vulnerable services are exposed or reachable.
- Apply updates per vendor instructions.
- Review relevant security telemetry for evidence of attempted or successful exploitation.
- Document the remediation decision and track it to verified completion.
Vendor remediation
Patch and remediation links
Use the vendor source below to confirm the correct fixed version, package or mitigation for your affected product.
Technical details
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- Not classified
- Affected versions
- Canonical Ubuntu Linux (Version: 18.04); Debian Debian Linux (Version: 10.0); Opensuse Leap (Version: 15.1); SaltStack Salt (Start Including: 3000, End Excluding: 3000.2); VMware Application Remote Collector (Version: 8.0.0)
- Published
- 30 April 2020
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
Signal timeline
- CVE published
- Added to CISA KEV
- Latest EPSS score: 96.6%
- Signal calculated at 85
External references
- Government advisory from www.cisa.gov
- Third-party advisory from lists.opensuse.org
- Third-party advisory from lists.opensuse.org
- Exploit information from packetstormsecurity.com
- Exploit information from packetstormsecurity.com
- Third-party advisory from www.vmware.com
- Vendor advisory from docs.saltstack.com
- Third-party advisory from github.com
- Third-party advisory from lists.debian.org
- Third-party advisory from tools.cisco.com
- Third-party advisory from usn.ubuntu.com
- Third-party advisory from www.debian.org