HTTP Host header attacks against web proxy disclaimer response webpage CVE-2017-14190
HTTP Host header attacks against web proxy disclaimer response webpage Summary The FortiOS web proxy disclaimer page is potentially vulnerable to an XSS attack, via maliciously crafted "Host" headers in user HTTP requests. The latter is possible if an attacker is in a Man-in-the-middle position (i.e. able to modify the HTTP requests of the potential victim before they reach the web proxy), or poisons a web cache used by the potential victim. In the latter attack scenario, the tainted disclaimer web page being cached, the XSS attack can be considered as persistent. Impact Persistent Cross-site Scripting (XSS) CVE ID CVE-2017-14190 Affected Products FortiOS 5.6.0 to 5.6.2 FortiOS 5.4.0 to 5.4.7 FortiOS 5.2 and lower versions. Solutions FortiOS 5.6 branch: Upgrade to 5.6.3 FortiOS 5.4 branch: Upgrade to 5.4.8 For...