Thursday, January 27, 2011
Vanilla Forums 2.0.16 <= Cross Site Scripting Vulnerability
The Vanilla Forums 2.0.16 and lower versions were vulnerable to Cross
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3. VULNERABILITY DESCRIPTION
The 'Target' parameter was not properly sanitized after user logs in,
which allows attacker to conduct Cross Site Scripting attack.
An attacker could prepare a link in a forum post that includes a link
to a file which seems to require authentication.
Upon logging in, user will get XSSed.
4. VERSIONS AFFECTED
2.0.16 and lower
Upgrade to Vanilla Forums 2.0.17 or higher
Vanilla Forums Development Team
This vulnerability was discovered by Aung Khant, http://yehg.net, YGN
Ethical Hacker Group, Myanmar.
9. DISCLOSURE TIME-LINE
2010-12-14: notified vendor
2011-01-18: vendor released fix
2011-01-27: vulnerability disclosed
Original Advisory URL:
What XSS Can Do: http://yehg.net/lab/pr0js/view.php/What%20XSS%20Can%20Do.pdf
XSS FAQs: http://www.cgisecurity.com/articles/xss-faq.shtml
XSS (wiki): http://en.wikipedia.org/wiki/Cross-site_scripting
XSS (owasp): http://www.owasp.org/index.php/Cross-site_Scripting_(XSS)
YGN Ethical Hacker Group
Our Lab | http://yehg.net/lab
Our Directory | http://yehg.net/hwd