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[SA16202] Asn Guestbook "version" Cross-Site Scripting Vulnerability

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Mon Jul 25 2005 - 07:23:13 CDT


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TITLE:
Asn Guestbook "version" Cross-Site Scripting Vulnerability

SECUNIA ADVISORY ID:
SA16202

VERIFY ADVISORY:
http://secunia.com/advisories/16202/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting

WHERE:
From remote

SOFTWARE:
Asn Guestbook 1.x
http://secunia.com/product/5432/

DESCRIPTION:
rgod has discovered a vulnerability in Asn Guestbook, which can be
exploited by malicious people to conduct cross-site scripting
attacks.

Input passed to the "version" parameter in "header.php" and
"footer.php" isn't properly sanitised before being returned to the
user. This can be exploited to execute arbitrary HTML and script code
in a user's browser session in context of a vulnerable site.

The vulnerability has been confirmed in version 1.5. Other versions
may also be affected.

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

PROVIDED AND/OR DISCOVERED BY:
rgod

ORIGINAL ADVISORY:
http://www.rgod.altervista.org/asnguestbook.html

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