phpBB Input Validation Bug in username Lets Remote Users Conduct Cross-Site Scripting Attacks
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SecurityTracker Alert ID: 1012284 |
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SecurityTracker URL: http://securitytracker.com/id/1012284
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CVE Reference:
GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Nov 19 2004
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Impact:
Disclosure of authentication information, Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 2.0.10 and prior versions
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Description:
Several input validation vulnerabilities were reported in phpBB. A remote user can conduct cross-site scripting attacks and may be able to inject SQL commands.
The vendor reported that the 'username' variable is not properly validated. A remote user can supply specially crafted input that, when viewed by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the phpBB software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
A remote user may also be able to inject SQL commands, but that was not confirmed.
The vendor credits AnthraX101 with reporting the cross-site scripting flaw and warmth with reporting the SQL injection flaw.
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Impact:
A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the phpBB software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
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Solution:
The vendor has issued a fixed version (2.0.11), available at:
http://www.phpbb.com/downloads.php
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Vendor URL: www.phpbb.com/ (Links to External Site)
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Cause:
Input validation error
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Underlying OS:
Linux (Any), UNIX (Any), Windows (Any)
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Message History:
None.
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Source Message Contents
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Date: Fri, 19 Nov 2004 17:23:27 -0500
Subject: http://www.phpbb.com/phpBB/viewtopic.php?f=14&t=240636
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> Changes since 2.0.10
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> * Fixed unsetting global vars - Matt Kavanagh
> * Fixed XSS vulnerability in username handling - AnthraX101
> * Fixed not confirmed sql injection in username handling - warmth
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