PHP tempnam() open_basedir directory traversal
| php-tempnam-directory-traversal (25705) |  Medium Risk |
Description:
PHP could allow a remote attacker to traverse directories on the system, caused by improper validation of user-supplied input by the tempnam() function. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to an affected script to bypass open_basedir restrictions and create or overwrite arbitrary files on the system.
Platforms Affected:
- Canonical, Ubuntu 5.04
- Canonical, Ubuntu 5.10
- Canonical, Ubuntu 6.06 LTS
- Novell, UnitedLinux 1.0
- PHP, PHP 4.0 Beta 4 Patch1
- PHP, PHP 4.0 Beta1
- PHP, PHP 4.0 Beta2
- PHP, PHP 4.0 Beta3
- PHP, PHP 4.0 Beta4
- PHP, PHP 4.0 RC1
- PHP, PHP 4.0 RC2
- PHP, PHP 4.0.0
- PHP, PHP 4.0.1
- PHP, PHP 4.0.2
- PHP, PHP 4.0.3
- PHP, PHP 4.0.4
- PHP, PHP 4.0.5
- PHP, PHP 4.0.6
- PHP, PHP 4.0.7
- PHP, PHP 4.1.0
- PHP, PHP 4.1.1
- PHP, PHP 4.1.2
- PHP, PHP 4.1.3
- PHP, PHP 4.2.0
- PHP, PHP 4.2.1
- PHP, PHP 4.2.2
- PHP, PHP 4.2.3
- PHP, PHP 4.2.4
- PHP, PHP 4.3.0
- PHP, PHP 4.3.1
- PHP, PHP 4.3.10
- PHP, PHP 4.3.11
- PHP, PHP 4.3.2
- PHP, PHP 4.3.3
- PHP, PHP 4.3.4
- PHP, PHP 4.3.5
- PHP, PHP 4.3.6
- PHP, PHP 4.3.7
- PHP, PHP 4.3.8
- PHP, PHP 4.3.9
- PHP, PHP 4.4.0
- PHP, PHP 4.4.1
- PHP, PHP 4.4.2
- PHP, PHP 5.0.0 Beta1
- PHP, PHP 5.0.0 Beta2
- PHP, PHP 5.0.0 RC2
- PHP, PHP 5.0.0
- PHP, PHP 5.0.0 Beta4
- PHP, PHP 5.0.0 Beta3
- PHP, PHP 5.0.0 RC3
- PHP, PHP 5.0.0 RC1
- 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
- RedHat, Enterprise Linux 2.1 WS
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Enterprise Linux 2.1 ES
- RedHat, Enterprise Linux 3 AS
- RedHat, Enterprise Linux 3 Desktop
- RedHat, Enterprise Linux 3 ES
- RedHat, Enterprise Linux 3 WS
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 4 AS
- RedHat, Enterprise Linux 4 ES
- RedHat, Enterprise Linux 4 Desktop
- RedHat, Linux Advanced Workstation 2.1 Itanium
- RedHat, Stronghold
- SuSE, SuSE Linux 10.0
- SuSE, SuSE Linux 9.1
- SuSE, SuSE Linux 9.2
- SuSE, SuSE Linux 9.3
- SuSE, SuSE Linux Enterprise Server 8.0
- SuSE, SuSE SLES 9
- Turbolinux, Turbolinux 10 Desktop
- Turbolinux, Turbolinux 10 F...
- Turbolinux, Turbolinux 10 Server
- Turbolinux, Turbolinux 10 Server x64 Ed
- Turbolinux, Turbolinux 7 Server
- Turbolinux, Turbolinux 8 Server
- Turbolinux, Turbolinux 8 Workstation
- Turbolinux, Turbolinux Home
- Turbolinux, Turbolinux Multimedia
- Turbolinux, Turbolinux Personal
- Turbolinux, Turbolinux Appliance Server 1.0 Hosting Ed
- Turbolinux, Turbolinux Appliance Server 1.0 Workgroup Ed
- Turbolinux, Turbolinux Appliance Server 2.0
Remedy:
Upgrade to the latest version of PHP (5.1.3 or later), available from The PHP Group Web site. See References.
For Red Hat Linux:
Refer to RHSA-2006:0568-8 for patch, upgrade, or suggested workaround information. See References.
For Red Hat Linux 2.1:
Refer to RHSA-2006:0567-7 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE Security Announcement SUSE-SA:2006:024 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
File Manipulation
References:
- Full-Disclosure Mailing List, Sat Apr 08 2006 - 14:41:54 CDT, tempnam() open_basedir bypass PHP 4.4.2 and 5.1.2 at http://archives.neohapsis.com/archives/fulldisclosure/2006-04/0171.html.
- PHP CVS Repository, [cvs] Index of /php-src at http://cvs.php.net/viewcvs.cgi/php-src/.
- The PHP Group Web site, PHP: Hypertext Preprocessor at http://www.php.net/.
- The PHP Group Web site, PHP 5.1.3. Release Announcement at http://www.php.net/release_5_1_3.php.
- ASA-2006-175: php security update (RHSA-2006-0568)
- ASA-2006-179: php security update (RHSA-2006-0567)
- BID-17439: PHP Multiple Safe_Mode and Open_Basedir Restriction Bypass Vulnerabilities
- CVE-2006-1494: Directory traversal vulnerability in file.c in PHP 4.4.2 and 5.1.2 allows local users to bypass open_basedir restrictions allows remote attackers to create files in arbitrary directories via the tempnam function.
- RHSA-2006-0549: php security update for Stronghold
- RHSA-2006-0567: php security update
- RHSA-2006-0568: php security update
- SA19599: PHP "phpinfo()" Cross-Site Scripting and Security Bypass
- SA21723: Avaya Products PHP Multiple Vulnerabilities
- SECTRACK ID: 1015881: PHP tempname() Argument Error Lets Users Bypass open_basedir Restrictions
- SUSE-SA:2006:024: various php security problems
Reported:
Apr 08, 2006
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