#VU50984 Command Injection in Salt - CVE-2021-3148

Vulnerability identifier: #VU50984

Vulnerability risk: Medium

CVSSv4.0: 6.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-3148

CWE-ID: CWE-77

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Salt
Web applications / Remote management & hosting panels

Vendor: SaltStack

Description

The vulnerability allows a remote user to execute arbitrary commands within the application.

The vulnerability exists due to improper input validation, related to handling single and double quotes, within the salt.utils.thin.gen_thin() function in salt/utils/thin.py. A remote user can send a specially crafted HTTP request to the SaltAPI and execute arbitrary commands.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Salt: 3000 - 3000.7, 3001 - 3001.5, 3002 - 3002.4

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External links
https://github.com/saltstack/salt/releases
https://saltproject.io/security_announcements/active-saltstack-cve-release-2021-feb-25/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.