CVE-2021-33555: pepperl-fuchs wha-gw-f2d2-0-as-_z2-eth.eip_firmware Path Traversal

Vulnerability summary

CVE-2021-33555 is a high (CVSS 7.5) Path Traversal vulnerability in pepperl-fuchs wha-gw-f2d2-0-as-_z2-eth.eip_firmware. EPSS estimates a 1.21% chance of exploitation in the next 30 days, higher than 68.2% of scored vulnerabilities.

Timeline

1. 31-08-2021
   PublishedVulnerability first disclosed.
2. 17-09-2024
   Last modifiedVulnerability information updated.

Description

In PEPPERL+FUCHS WirelessHART-Gateway <= 3.0.7 the filename parameter is vulnerable to unauthenticated path traversal attacks, enabling read access to arbitrary files on the server.

• 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.