#VU50980 Path traversal in Salt - CVE-2021-25282

Vulnerability identifier: #VU50980

Vulnerability risk: Medium

CVSSv4.0: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2021-25282

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: Yes

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

Vendor: SaltStack

Description

The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences within the salt.wheel.pillar_roots.write method. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Salt: 3000 - 3000.7, 3001 - 3001.5, 3002.1 - 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. However, a fully functional exploit for this vulnerability is available.