CVE-2020-25176: rockwell automation isagraf runtime Relative Path Traversal

Vulnerability summary

CVE-2020-25176 is a critical (CVSS 9.8) Relative Path Traversal vulnerability in rockwell automation isagraf runtime. EPSS estimates a 6.42% chance of exploitation in the next 30 days, higher than 93.6% of scored vulnerabilities.

Timeline

1. 18-03-2022
   PublishedVulnerability first disclosed.
2. 16-04-2025
   Last modifiedVulnerability information updated.

Description

Some commands used by the Rockwell Automation ISaGRAF Runtime Versions 4.x and 5.x eXchange Layer (IXL) protocol perform various file operations in the file system. Since the parameter pointing to the file name is not checked for reserved characters, it is possible for a remote, unauthenticated attacker to traverse an application’s directory, which could lead to remote code execution.

• CWE-23Relative Path TraversalThe product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.
• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.