Lighttpd Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') Vulnerability (CVE-2018-19052)
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.