CVE-2009-4018 Information

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.

Reference

http://bugs.php.net/bug.php?id=49026 http://marc.info/?l=bugtraq&m=127680701405735&w=2 http://marc.info/?l=oss-security&m=125886770008678&w=2 http://marc.info/?l=oss-security&m=125897935330618&w=2 http://secunia.com/advisories/40262 http://secunia.com/advisories/41480 http://secunia.com/advisories/41490 http://svn.php.net/viewvc/?view=revision&revision=286360 http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/ext/standard/proc_open.c?r1=286360&r2=286359&pathrev=286360 http://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/ext/standard/proc_open.c?r1=286360&r2=286359&pathrev=286360 http://www.itrc.hp.com/service/cki/docDisplay.do?docId=emr_na-c02512995 http://www.mandriva.com/security/advisories?name=MDVSA-2009:303 http://www.openwall.com/lists/oss-security/2009/11/23/15 http://www.php.net/ChangeLog-5.php http://www.securityfocus.com/bid/37138 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A7256