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PHP Toolkit: Data disclosure and Denial of Service

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200804-19 / php-toolkit
Release Date April 17, 2008
Latest Revision April 17, 2008: 01
Impact normal
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
app-admin/php-toolkit < 1.0.1 >= 1.0.1 All supported architectures

Related bugreports: #209535

Synopsis

PHP Toolkit does not quote parameters, allowing for PHP source code disclosure on Apache, and a Denial of Service.

2.  Impact Information

Background

PHP Toolkit is a utility to manage parallel installations of PHP within Gentoo. It is executed by the PHP ebuilds at setup.

Description

Toni Arnold, David Sveningsson, Michal Bartoszkiewicz, and Joseph reported that php-select does not quote parameters passed to the "tr" command, which could convert the "-D PHP5" argument in the "APACHE2_OPTS" setting in the file /etc/conf.d/apache2 to lower case.

Impact

An attacker could entice a system administrator to run "emerge php" or call "php-select -t apache2 php5" directly in a directory containing a lower case single-character named file, which would prevent Apache from loading mod_php and thereby disclose PHP source code and cause a Denial of Service.

3.  Resolution Information

Workaround

Do not run "emerge" or "php-select" from a working directory which contains a lower case single-character named file.

Resolution

All PHP Toolkit users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/php-toolkit-1.0.1"

4.  References



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Page updated April 17, 2008

Summary: This is a Gentoo Linux Security Advisory

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