Vulnerability CVE-2009-3557
Published: 2009-11-23   Modified: 2012-02-13

Description:
The tempnam function in ext/standard/file.c in PHP before 5.2.12 and 5.3.x before 5.3.1 allows context-dependent attackers to bypass safe_mode restrictions, and create files in group-writable or world-writable directories, via the dir and prefix arguments.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
PHP 5.2.11 tempnam() safe_mode bypass
Grzegorz Stachow...
30.09.2009

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
PHP -> PHP 

 References:
http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
http://marc.info/?l=bugtraq&m=127680701405735&w=2
http://news.php.net/php.announce/79
http://securityreason.com/securityalert/6601
http://support.apple.com/kb/HT4077
http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/ext/standard/file.c?view=log
http://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/ext/standard/file.c?view=log
http://svn.php.net/viewvc?view=revision&revision=288945
http://www.mandriva.com/security/advisories?name=MDVSA-2009:285
http://www.mandriva.com/security/advisories?name=MDVSA-2009:302
http://www.mandriva.com/security/advisories?name=MDVSA-2009:303
http://www.openwall.com/lists/oss-security/2009/11/20/2
http://www.openwall.com/lists/oss-security/2009/11/20/3
http://www.openwall.com/lists/oss-security/2009/11/20/5
http://www.php.net/ChangeLog-5.php
http://www.php.net/releases/5_2_12.php
http://www.php.net/releases/5_3_1.php
http://www.vupen.com/english/advisories/2009/3593
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7396
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