[UNIX] phpSysInfo Path Disclosure and Cross Site Scripting

From: SecuriTeam (support_at_securiteam.com)
Date: 03/29/05

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Date: 29 Mar 2005 10:52:32 +0200

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      phpSysInfo Path Disclosure and Cross Site Scripting
    ------------------------------------------------------------------------

    SUMMARY

     <http://phpsysinfo.sourceforge.net/> phpSysInfo is a customizable PHP
    Script that parses /proc, and formats information nicely. "
    <http://phpsysinfo.sourceforge.net/> phpSysInfo is a PHP script that
    displays information about the host being accessed. It will displays
    things like Uptime, CPU, Memory, SCSI, IDE, PCI, Ethernet, Floppy, and
    Video Information."

    phpSysInfo has been found to contain two security vulnerabilities, a path
    disclosure vulnerability and a cross site scripting vulnerability.
    Exploiting these vulnerabilities allows a remote attacker to discover
    sensitive information about target system and run malicious scripts in
    context of Internet browser on site's visitors machines.

    DETAILS

    Vulnerable Systems:
     * phpSysInfo version 2.3

    Full Path Disclosure:
    By accessing any of following URLs:
    http://[host]/[DIR]/includes/os/class.OpenBSD.inc.php
    http://[host]/[DIR]/includes/os/class.NetBSD.inc.php
    http://[host]/[DIR]/includes/os/class.FreeBSD.inc.php
    http://[host]/[DIR]/includes/os/class.Darwin.inc.php
    http://[host]/[DIR]/includes/os/class.BSD.inc.php
    http://[host]/[DIR]/includes/XPath.class.php
    http://[host]/[DIR]/includes/system_header.php
    http://[host]/[DIR]/includes/system_footer.php

    An error message of the sorts of will be returned:
    Warning: main(./includes/os/class.BSD.common.inc.php) [function.main]:
    failed to open stream: No such file or directory in
    /www/phpsysinfo-dev/includes/os/class.OpenBSD.inc.php on line 22
    Fatal error: main() [function.require]: Failed opening required
    './includes/os/class.BSD.common.inc.php' (include_path='.:') in
    /www/phpsysinfo-dev/includes/os/class.OpenBSD.inc.php on line 22

    Cross Site Scripting:
    This vulnerability requires that the variable register_globals is set to
    On:

    Any of the following URLs can be used to trigger the vulnerability:
    http://[host]/[DIR]/index.php?sensor_program=[XSS]
    http://[host]/[DIR]/includes/system_footer.php?text[language]=">[XSS]
    http://[host]/[DIR]/includes/system_footer.php?text[template]=">[XSS]
    http://[host]/[DIR]/includes/system_footer.php?hide_picklist=cXIb8O3&
    VERSION=<iframe src=http://example.com>

    Workaround:
    Download a patch by <mailto:max@jestsuper.pl> Maksymilian Arciemowicz
    from here:
     <http://securityreason.com/patch/phpSysInfo-2.3.patch.by.cXIb8O3.tar.gz>
    http://securityreason.com/patch/phpSysInfo-2.3.patch.by.cXIb8O3.tar.gz

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:max@jestsuper.pl>
    Maksymilian Arciemowicz.
    The original article can be found at: <http://www.securityreason.com/adv
    /%5BphpSysInfo%202.3%20Multiple%20vulnerabilities%20cXIb8O3.11%5D.asc>
    http://www.securityreason.com/

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