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[SA11466] PostNuke Cross Site Scripting Vulnerabilities

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Fri Apr 23 2004 - 04:47:26 CDT

TITLE:
PostNuke Cross Site Scripting Vulnerabilities

SECUNIA ADVISORY ID:
SA11466

VERIFY ADVISORY:
http://secunia.com/advisories/11466/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting, Exposure of sensitive information

WHERE:
From remote

SOFTWARE:
PostNuke 0.x

DESCRIPTION:
Janek Vind has reported some vulnerabilities in PostNuke, allowing
malicious people to conduct Cross Site Scripting attacks.

Input passed to certain parameters in various scripts/modules isn't
properly verified before it is returned to the user. This can be
exploited to execute arbitrary HTML or script code in a user's
browser session in context of an affected site by tricking the user
into visiting a malicious website or follow a specially crafted
link.

Examples:
modules.php?op=modload&name=Downloads&file=index&req=ratedownload&ttitle=x&lid=>[malicious_code]
modules.php?op=modload&name=Downloads&file=index&req=search&query=>[malicious_code]
modules.php?op=modload&name=Web_Links&file=index&req=search&query=>[malicious_code]
javascript/openwindow.php?hlpfile=x<html><body>[malicious_code]

If error messages hasn't been turned off in PHP, multiple scripts
will return error messages when accessed directly. This can be
exploited to reveal the installation path.

The vulnerabilities have been reported in version 0.726.

SOLUTION:
Edit the source code to ensure that input is properly sanitised.

PROVIDED AND/OR DISCOVERED BY:
Janek Vind "waraxe"

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