Description
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.
Remediation
References
Related Vulnerabilities
Joomla Improper Input Validation Vulnerability (CVE-2011-2892)
RubyGems Cryptographic Issues Vulnerability (CVE-2013-4363)
Drupal Permissions, Privileges, and Access Controls Vulnerability (CVE-2008-4791)
phpList Access of Resource Using Incompatible Type ('Type Confusion') Vulnerability (CVE-2020-8547)