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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 11.3%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 11.34% probability · 96th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- php/php
- Source
- secalert@redhat.com
References
- http://bugs.php.net/bug.php?id=49026Exploit, Patch
- http://marc.info/?l=bugtraq&m=127680701405735&w=2
- http://marc.info/?l=oss-security&m=125886770008678&w=2Patch
- http://marc.info/?l=oss-security&m=125897935330618&w=2Patch
- http://secunia.com/advisories/40262
- http://secunia.com/advisories/41480
- http://secunia.com/advisories/41490
- http://svn.php.net/viewvc/?view=revision&revision=286360Patch
- http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/ext/standard/proc_open.c?r1=286360&r2=286359&pathrev=286360Patch
- http://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/ext/standard/proc_open.c?r1=286360&r2=286359&pathrev=286360Patch
- 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/2009/11/23/15Patch
- http://www.php.net/ChangeLog-5.php
- http://www.securityfocus.com/bid/37138
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7256
- http://bugs.php.net/bug.php?id=49026Exploit, Patch
- http://marc.info/?l=bugtraq&m=127680701405735&w=2
- http://marc.info/?l=oss-security&m=125886770008678&w=2Patch
- http://marc.info/?l=oss-security&m=125897935330618&w=2Patch
- http://secunia.com/advisories/40262
- http://secunia.com/advisories/41480
- http://secunia.com/advisories/41490
- http://svn.php.net/viewvc/?view=revision&revision=286360Patch
- http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/ext/standard/proc_open.c?r1=286360&r2=286359&pathrev=286360Patch
- http://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/ext/standard/proc_open.c?r1=286360&r2=286359&pathrev=286360Patch
- 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/2009/11/23/15Patch
- http://www.php.net/ChangeLog-5.php
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.