BugTraq
[SCSA-007] Cross Site Scripting Vulnerabilities in WWWBoard Feb 23 2003 02:19AM
Grégory Le Bras (gregory lebras security-corp org)


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Security Corporation Security Advisory [SCSA-007]

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PROGRAM: WWWBoard

HOMEPAGE: http://www.scriptarchive.com

VULNERABLE VERSIONS: 2.0A2.1 and prior

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DESCRIPTION

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WWWBoard is "A threaded discussion forum that allows users to post

new messages, followup to existing ones and more. Includes a basic

admin to maintain the board."

(direct quote from WWWBoard website)

DETAILS

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A Cross-Site Scripting vulnerability have been found in WWWBoard

which allow attackers to inject script codes into the forum and use them

on clients browser as if they were provided by the site.

This Cross-Site Scripting vulnerability are found in the page for

posting messages.

An attacker can input specially crafted links and/or other

malicious scripts.

EXPLOIT

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A vulnerability was discovered in the page for posting messages,

at this adress :

http://[target]/wwwboard/wwwboard.html#post

The vulnerability is at the level of the interpretation of the "Message"

field.

Indeed, the insertion of a hostile code script in this field makes it

possible to a malicious user to carry out this script on the navigator

of the visitors.

The hostile code could be :

[script]alert("Cookie="+document.cookie)[/script]

(open a window with the cookie of the visitor.)

(replace [] by <>)

SOLUTIONS

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No solution for the moment.

VENDOR STATUS

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The vendor has reportedly been notified.

LINKS

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http://www.security-corp.org/index.php?ink=4-15-1

Version Française :

http://www.security-corp.org/advisories/SCSA-007-FR.txt

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Grégory Le Bras aka GaLiaRePt | http://www.Security-Corp.org

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