CVE-2009-4018

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.

🔗 References (32)

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