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NavBoard Potential BBcode Script Insertion Vulnerability

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Release Date:  2006-01-09    Last Update:  2006-01-26    Views:  7,558

Secunia Advisory SA18345

Where:

From remote

Impact:

Cross Site Scripting

Solution Status:

Unpatched

Software:

CVE Reference(s):

Description


Aliaksandr Hartsuyeu has discovered a vulnerability in NavBoard, which potentially can be exploited by malicious people to conduct script insertion attacks.

Input passed via certain BBcode tags (e.g. url) isn't properly sanitised before being used. This can be exploited to inject arbitrary Javascript code, which will be executed in a user's browser session in context of an affected site when a malicious link with the "JavaScript" URI handler is followed from a malicious message.

Example:
[url=javascript:[code]]title[/url]

Successful exploitation requires that the Administrator has defined some BBcode tags that can be used in forum posts. This is not defined by default in version V16.

The vulnerability has been confirmed in version V16 (2.6.0) and also reported in version V17 beta2.


Solution:
Do not allow the use of BBcode tags or edit the source code to ensure that input is properly sanitised.

Provided and/or discovered by:
Aliaksandr Hartsuyeu

Original Advisory:
http://evuln.com/vulns/19/summary.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: NavBoard Potential BBcode Script Insertion Vulnerability

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