CVE-2021-32954: advantech webaccess\/scada Relative Path Traversal

Vulnerability summary

CVE-2021-32954 is a medium (CVSS 6.8) Relative Path Traversal vulnerability in advantech webaccess\/scada. EPSS estimates a 2.08% chance of exploitation in the next 30 days, higher than 81.3% of scored vulnerabilities.

Timeline

1. 18-06-2021
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

Advantech WebAccess/SCADA Versions 9.0.1 and prior is vulnerable to a directory traversal, which may allow an attacker to remotely read arbitrary files on the file system.

• 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.