CVE-2018-19052: debian debian_linux Path Traversal

Vulnerability summary

CVE-2018-19052 is a high (CVSS 7.5) Path Traversal vulnerability in debian debian_linux. EPSS estimates a 13.71% chance of exploitation in the next 30 days, higher than 96.4% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 07-11-2018
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

An issue was discovered in mod_alias_physical_handler in mod_alias.c in lighttpd before 1.4.50. There is potential ../ path traversal of a single directory above an alias target, with a specific mod_alias configuration where the matched alias lacks a trailing '/' character, but the alias target filesystem path does have a trailing '/' character.

• 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.