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EV0019.txt

EV0019.txt
Posted Jan 8, 2006
Authored by Aliaksandr Hartsuyeu

NavBoard BBcode version 16 Stable (2.6.0) is susceptible to cross site scripting attacks. Exploitation details provided.

tags | exploit, xss
SHA-256 | a9bfc24fea36040757fc7e73d54276a13d72f20e2cff57584ea10ae7dc9dbf30

EV0019.txt

Change Mirror Download
New eVuln Advisory:
NavBoard BBcode XSS Vulnerability

--------------------Summary----------------
Vendor: NavBoard
Vendor's Web Site: http://navarone.f2o.org/
Software: NavBoard
Sowtware's Web Site: http://sourceforge.net/projects/navboard/
Versions: checked: V16 Stable(2.6.0) and V17beta2
Critical Level: Moderate
Type: Cross-Site Scripting
Class: Remote
Status: Unpatched
Exploit: Available
Solution: Available
Discovered by: Aliaksandr Hartsuyeu (eVuln.com)
Published: 2006.01.07
eVuln ID: EV0019

-----------------Description--------------
Arbitrary script code insertion is possible in BBcode.

Vulnerable Script: post.php
BBcode isn't properly sanitized. This can be used to post arbitrary script code which will be executed in the browser of every visitor.

Administrator's cookie-based authentication is threatened.
Login and plain text Password are stored in Cookies.
Administrator can modify PHP Code from Administrator's panel.


--------------Exploit---------------------
BBcode Examples:

For V16(2.6.0)
[b]<XSS>[/b]
[textlarge]<XSS>[/textlarge]

For V16(2.6.0) and V17beta2
[url=javascript:alert(123)]title[/url]


--------------Solution---------------------
No vendor-provided patch availabve.

Solution: disable BBcode

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

Discovered by: Aliaksandr Hartsuyeu (eVuln.com)
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