PHP .htaccess security bypass
| php-htaccess-security-bypass (35102) |  Medium Risk |
Description:
PHP could allow a remote attacker to bypass security restrictions, caused by an error in the session_save_path() and ini_set() functions. A remote attacker could exploit this vulnerability by using directives in the .htaccess file to bypass open_basedir or safe_mode restrictions to gain unauthorized access and modify configuration settings.
Platforms Affected:
- Apple, Mac OS X 10.4.11
- Apple, Mac OS X Server 10.4.11
- Apple, Mac OS X Server 10.5.2
- Gentoo, Linux
- HP, HP-UX B.11.11
- HP, HP-UX B.11.23
- HP, HP-UX B.11.31
- PHP, PHP 4.4.7 and prior
- PHP, PHP 5.2.3 and prior
Remedy:
Upgrade to the latest version of PHP (5.2.4 or later), available from the PHP Web site. See References.
For Mac OS X:
Apply Security Update 2008-002, available from the Apple Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
Consequences:
Bypass Security
References:
- Apple Web site, About Security Update 2008-002 at http://docs.info.apple.com/article.html?artnum=307562.
- HPSBUX02332 SSRT080056 rev.1, HP-UX running Apache with PHP, Remote Denial of Service (DoS), Gain Extended Privileges at http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01438646.
- PHP Web site, PHP: Hypertext Preprocessor at http://www.php.net/.
- SecurityReason Advisory, SecurityAlert : 45, PHP 5.2.3 PHP 4.4.7, htaccess safemode and open_basedir Bypass at http://securityreason.com/achievement_securityalert/45.
- SecurityReason Advisory, SecurityAlert : 47, PHP 5.2.4 mail.force_extra_parameters unsecure at http://securityreason.com/achievement_securityalert/47.
- ASA-2008-053: HP-UX Running Apache Remote Execution of Arbitrary Code (HPSBUX02308)
- ASA-2008-198: HP-UX running Apache with PHP Remote Denial of Service (DoS) Gain Extended Privileges (HPSBUX02332)
- BID-24661: PHP .Htaccess Safe_Mode and Open_Basedir Restriction-Bypass Vulnerability
- BID-25498: PHP 5.2.3 and Prior Versions Multiple Vulnerabilities
- CVE-2007-3378: The (1) session_save_path, (2) ini_set, and (3) error_log functions in PHP 4.4.7 and earlier, and PHP 5 5.2.3 and earlier, when invoked from a .htaccess file, allow remote attackers to bypass safe_mode and open_basedir restrictions and possibly execute arbitrary commands, as demonstrated using (a) php_value, (b) php_flag, and (c) directives in .htaccess.
- FrSIRT/ADV-2007-3023: PHP Multiple Function and Extension Code Execution and Security Bypass Issues
- FrSIRT/ADV-2008-0398: HP-UX Security Update Fixes Apache Code Execution Vulnerabilities
- FrSIRT/ADV-2008-0924: Apple Mac OS X Command Execution and Security Bypass Issues
- GLSA-200710-02: PHP: Multiple vulnerabilities
- SA26642: PHP Multiple Vulnerabilities
- SA27648: PHP Multiple Vulnerabilities
- SA28318: PHP Multiple Vulnerabilities
- SA29420: Mac OS X Security Update Fixes Multiple Vulnerabilities
Reported:
Jun 27, 2007
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