Vulnerability identifier: #VU53972

Vulnerability risk: Low

CVSSv3.1: 4.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

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

---

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

---

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.