INFORMATION BULLETIN

S-286: PHP Path Translation Vulnerability

[US-CERT Vulnerability Note VU#147027]

May 9, 2008 15:00 GMT


PROBLEM:	PHP contains a path translation vulnerability that may allow an attacker to execute arbitrary code.
PLATFORM:	PHP 5.2.5
DAMAGE:	Execute arbitrary code.
SOLUTION:	Upgrade to the appropriate version.

VULNERABILITY ASSESSMENT:	The risk is MEDIUM. An attacker may be able to execute arbitrary code in the context of an application that uses the vulnerable function. The scope of the impact depends on how the affected application works. Applications that process filename input from the network, such as public-facing web applications, would be vulnerable to a remote attacker.

CVSS 2 BASE SCORE: TEMPORAL SCORE: VECTOR:	7.5 5.9 (AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C)

LINKS:
CIAC BULLETIN:	http://www.ciac.org/ciac/bulletins/s-286.shtml
ORIGINAL BULLETIN:	http://www.kb.cert.org/vuls/id/147027
CVE:	CVE-2008-0599

[***** Start US-CERT Vulnerability Note VU#147027 *****]

Vulnerability Note VU#147027

PHP path translation vulnerability

Overview

PHP contains a path translation vulnerability that may allow an attacker to execute arbitrary code.

I. Description

PHP is a scripting language that is designed for web-based applications and can be imbedded directly into HTML.

PHP versions prior to 5.2.6 contain a path translation vulnerability. For more information about this issue, see the PHP CVS log.

An attacker may be able to execute arbitrary code in the context of an application that uses the vulnerable function. The scope of the impact depends on how the affected application works. Applications that process filename input from the network, such as public-facing web applications, would be vulnerable to a remote attacker.

III. Solution

Upgrade

PHP 5.2.6 was released to address this and other issues.

Systems Affected

Vendor	Status	Date Updated
The PHP Group	Vulnerable	6-May-2008

References

https://www.securecoding.cert.org/confluence/x/_wI
http://www.php.net/ChangeLog-5.php
http://cvs.php.net/viewvc.cgi/php-src/sapi/cgi/cgi_main.c?r1=1.267.2.15.2.50.2.12&r2=1.267.2.15.2.50.2.13&diff_format=u

Credit

Thanks to the PHP team for information that was used in this report.

This document was written by Ryan Giobbi.

Other Information

Date Public	05/06/2008
Date First Published	05/06/2008 02:52:57 PM
Date Last Updated	05/06/2008
CERT Advisory
CVE Name	CVE-2008-0599
US-CERT Technical Alerts
Metric	1.13
Document Revision	17


[***** End US-CERT Vulnerability Note VU#147027 *****]

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