CVE-2009-4018

HighCVSS 7.5/10Last modified Jun 16, 2026

Description

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.

Metrics

CVSS 2.0 7.5/10AV:N/AC:L/Au:N/C:P/I:P/A:P

Weakness enumeration

CWE-264

Affected software

No affected versions have been published.

Timeline

Published: Nov 29, 2009
Last modified: Jun 16, 2026
NVD status: Modified

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