CGI.pm contains a flaw that allows a remote cross site scripting attack. This flaw exists because the application does not validate $action variables upon submission to the startform() script. 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 Required
Attack Type:
Input Manipulation
Impact:
Loss of Integrity
Exploit:
Exploit Available
Disclosure:
OSVDB Verified
OSVDB:
Web Related
Solution
Upgrade to version 2.99 or higher, as it has been reported to fix this vulnerability. It is also possible to correct the flaw by implementing the following workaround(s): Apply patch for 2.98 or Add the following line in startform() function, after subroutine "unless (defined $action) { }" $action =~ s/\"/%22/g; # fix cross-site scripting bug reported by obscure
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