PHP session extension symlink security bypass
| php-session-security-bypass (36387) |  Medium Risk |
Description:
PHP could allow a remote attacker to bypass security restrictions, caused by an unspecified vulnerability in the session extension when the session file is a symlink. An attacker could exploit this vulnerability to bypass open_basedir restrictions and gain unauthorized access to the system.
Platforms Affected:
- Gentoo, Linux
- PHP, PHP 5.0.0 RC1
- PHP, PHP 5.0.0
- PHP, PHP 5.0.0 Beta4
- PHP, PHP 5.0.0 RC2
- PHP, PHP 5.0.0 Beta3
- PHP, PHP 5.0.0 RC3
- PHP, PHP 5.0.0 Beta2
- PHP, PHP 5.0.0 Beta1
- PHP, PHP 5.0.1
- PHP, PHP 5.0.2
- PHP, PHP 5.0.3
- PHP, PHP 5.0.4
- PHP, PHP 5.0.5
- PHP, PHP 5.1.0
- PHP, PHP 5.1.1
- PHP, PHP 5.1.2
- PHP, PHP 5.1.3
- PHP, PHP 5.1.4
- PHP, PHP 5.1.5
- PHP, PHP 5.1.6
- PHP, PHP 5.2.0
- PHP, PHP 5.2.1
- PHP, PHP 5.2.2
- PHP, PHP 5.2.3
Remedy:
Upgrade to the latest version of PHP (5.2.4 or later), available from the PHP Web site. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Bypass Security
References:
- PHP Web site, PHP 5.2.4 Release Announcement at http://www.php.net/releases/5_2_4.php.
- CVE-2007-4652: The session extension in PHP before 5.2.4 might allow local users to bypass open_basedir restrictions via a session file that is a symlink.
- CVE-2007-4663: Directory traversal vulnerability in PHP before 5.2.4 allows attackers to bypass open_basedir restrictions via unspecified vectors involving the glob function.
- FrSIRT/ADV-2007-3023: PHP Multiple Function and Extension Code Execution and Security Bypass Issues
- GLSA-200710-02: PHP: Multiple vulnerabilities
- SA26642: PHP Multiple Vulnerabilities
Reported:
Aug 30, 2007
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