Vulnerability CVE-2009-3558
Published: 2009-11-23   Modified: 2012-02-13

Description:
The posix_mkfifo function in ext/posix/posix.c in PHP before 5.2.12 and 5.3.x before 5.3.1 allows context-dependent attackers to bypass open_basedir restrictions, and create FIFO files, via the pathname and mode arguments, as demonstrated by creating a .htaccess file.

See advisories in our WLB2 database:
Topic
Author
Date
High
PHP 5.3.0 5.2.11 posix_mkfifo() open_basedir bypass
Grzegorz Stachow...
30.09.2009

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
PHP -> PHP 

 References:
http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
http://news.php.net/php.announce/79
http://securityreason.com/securityalert/6600
http://support.apple.com/kb/HT4077
http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/ext/posix/posix.c?view=log
http://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/ext/posix/posix.c?view=log
http://svn.php.net/viewvc?view=revision&revision=288943
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
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