ID:11488 - Exploit for Permissions, Privileges, and Access Controls in PHP - CVE-2009-4018

Link to public exploit:

Vulnerability description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

The proc_open function in ext/standard/proc_open.c in PHP before 5.2.11 and 5.3.x before 5.3.1 does not enforce the (1) safe_mode_allowed_env_vars and (2) safe_mode_protected_env_vars directives, which allows context-dependent attackers to execute programs with an arbitrary environment via the env parameter, as demonstrated by a crafted value of the LD_LIBRARY_PATH environment variable.

Remediation