20389 : phpBB search.php list_cat Variable XSS
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Info

Last Modified

8 months ago

Percent Complete

100%

Disclosure

Oct 31, 2005

Discovery

Aug 14, 2005

Dates

Exploit

Unknown

Solution

Unknown

Description

phpBB contains a flaw that allows a remote cross site scripting attack. This flaw exists because the application does not validate the 'list_cat' variable upon submission to the 'search.php' script. This could allow a user to create a specially crafted URL that would execute arbitrary code in a user's browser within the trust relationship between the browser and the server, leading to a loss of integrity.

Classification

Location: Remote/Network Access Required
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Available
OSVDB: Web Related

Technical

This vulnerability is only present when the register_globals PHP option is set to 'on'. This has not been the default setting for PHP installs since version 4.2.0 (22-Apr-2002).

Solution

Upgrade to version 2.0.18 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

phpBB Group

phpBB

2.0.17

References

Security Tracker: 1015121
Secunia Advisory ID: 17366 18098
CVE ID: 2005-3418 (see also: NVD)
Related OSVDB ID: 20386 20387 20388 20390 20391
FrSIRT Advisory: ADV-2005-2250
Mail List Post: http://archives.neohapsis.com/archives/fulldisclosure/2005-10/0637.html
Vendor Specific Advisory URL: http://www.debian.org/security/2005/dsa-925
Other Advisory URL: http://www.hardened-php.net/advisory_172005.75.html

Tools & Filters

Nessus	22791

Credit

Stefan Esser - sesserhardened-php.net - www.hardened-php.net

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