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Secunia Survey

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CEO Secunia

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TITLE:
PunBB "redirect_url" Cross-Site Scripting Vulnerability

SECUNIA ADVISORY ID:
SA19986

VERIFY ADVISORY:
http://secunia.com/advisories/19986/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
PunBB 1.x
http://secunia.com/product/3700/

DESCRIPTION:
o.y.6 has discovered a vulnerability in PunBB, which can be exploited
by malicious people to conduct cross-site scripting attacks.

Input passed to the "redirect_url" parameter in "misc.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 an affected site.

The vulnerability has been confirmed in version 1.2.11. Other
versions may also be affected.

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

PROVIDED AND/OR DISCOVERED BY:
o.y.6

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About:
This Advisory was delivered by Secunia as a free service to help
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