FogBugz Cross Site Scripting Vulnerability

[M.Neset KABAKLI]

I.Vulnerability
FogBugz Cross Site Scripting Vulnerability


II.Vendor
Fog Creek Software (www.fogcreek.com)


III.Affected Systems
- FogBugz (<= 4.029)


IV.About
FogBugz is a complete web based project management system for software
teams. Designed by Joel Spolsky of Joel on Software fame (www.fogcreek.com).


V.Description
An attacker is able to inject HTML and client-side script codes to FogBugz
login page by modifying dest variabe. An example crafted link can be found
below.


VI.Exploit
http://[fogbugz.example.com]/default.asp?pg=pgLogon&dest=[XSS]


VII.Vulnerability Status
- Vulnerability discovered on 2005-12-11.
- Vendor notified on 2005-12-13.
- Patch released on 2005-12-13.


VIII.Credits
M.Neset KABAKLI, Wakiza Software Technologies (www.wakiza.com).