Calcium contains a flaw that allows a remote cross site scripting attack. This flaw exists because the application does not validate the 'EventText' variable upon submission to the 'Calcium' script during the creation of a new event. This could allow a user to create a specially crafted URL that would execute arbitrary code in a user's browser within the trust relationship between the browser and the server, leading to a loss of integrity.
Classification
Location:
Remote / Network Access
Attack Type:
Input Manipulation
Impact:
Loss of Integrity
Exploit:
Exploit Public
Disclosure:
OSVDB Verified
OSVDB:
Web Related
Solution
Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workaround: Disable the "HTML in Events" setting (enabled by default) on the "Display Settings" administration menu.