#VU53972 Path traversal in Rockwell Automation products - CVE-2020-25176

Vulnerability identifier: #VU53972

Vulnerability risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-25176

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
AADvance Controller
Server applications / Other server solutions
ISaGRAF Free Runtime in ISaGRAF6 Workbench
Server applications / Other server solutions
ISaGRAF Runtime
Server applications / Other server solutions
Micro800
Hardware solutions / Firmware

Vendor: Rockwell Automation

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 ISaGRAF eXchange Layer (IXL) protocol. A remote administrator can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

AADvance Controller: 1.40

ISaGRAF Free Runtime in ISaGRAF6 Workbench: 6.6.8

Micro800: All versions

ISaGRAF Runtime: before 5.72.00

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External links
https://ics-cert.us-cert.gov/advisories/icsa-20-280-01
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2021/07/13/klcert-20-022-rockwell-automation-isagraf-runtime-code-execution-due-to-relative-path-traversal

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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