CVE-2004-1063: Canonical Ubuntu Linux

High severity, CVSS 10.0. EPSS: 4.2% chance of exploitation in the next 30 days.

PHP 4.x to 4.3.9, and PHP 5.x to 5.0.2, when running in safe mode on a multithreaded Unix webserver, allows local users to bypass safe_mode_exec_dir restrictions and execute commands outside of the intended safe_mode_exec_dir via shell metacharacters in the current directory name. NOTE: this issue was originally REJECTed by its CNA before publication, but that decision is in active dispute. This candidate may change significantly in the future as a result of further discussion.

Affected products

• Canonical Ubuntu Linux: version 4.10 only
• PHP PHP: from 4.0.0, up to and including 4.3.9; from 5.0.0, up to and including 5.0.2

Published 2005-01-10. Last modified 2026-06-16.