CVE-2018-12473: opensuse open_build_service Relative Path Traversal

Vulnerability summary

CVE-2018-12473 is a high (CVSS 7.5) Relative Path Traversal vulnerability in opensuse open_build_service. EPSS estimates a 1.82% chance of exploitation in the next 30 days, higher than 78.3% of scored vulnerabilities.

Timeline

1. 02-10-2018
   PublishedVulnerability first disclosed.
2. 16-09-2024
   Last modifiedVulnerability information updated.

Description

A path traversal traversal vulnerability in obs-service-tar_scm of Open Build Service allows remote attackers to cause access files not in the current build. On the server itself this is prevented by confining the worker via KVM. Affected releases are openSUSE Open Build Service: versions prior to 70d1aa4cc4d7b940180553a63805c22fc62e2cf0.

• 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.