Headline
CVE-2022-41334: Fortiguard
An improper neutralization of input during web page generation [CWE-79] vulnerability in FortiOS versions 7.0.0 to 7.0.7 and 7.2.0 to 7.2.3 may allow a remote, unauthenticated attacker to launch a cross site scripting (XSS) attack via the “redir” parameter of the URL seen when the “Sign in with FortiCloud” button is clicked.
** PSIRT Advisories**
FortiOS – XSS vulnerability in the Login page when FortiCloud Sign-in is used
Summary
An improper neutralization of input during web page generation [CWE-79] vulnerability in FortiOS may allow a remote, unauthenticated attacker to launch a cross site scripting (XSS) attack via the “redir” parameter of the URL seen when the “Sign in with FortiCloud” button is clicked.
Affected Products
FortiOS version 7.2.0 through 7.2.3
FortiOS version 7.0.0 through 7.0.7
Solutions
Please upgrade to FortiOS version 7.2.4 or above
Please upgrade to FortiOS version 7.0.8 or above
Workaround:
Disable “Sign in with FortiCloud” feature using the below command
config system global
set admin-forticloud-sso-login disable
end
and use other authentication methods to login to FortiGate.
Acknowledgement
Fortinet is pleased to thank Gabriel Ottoboni for reporting this vulnerability under responsible disclosure.