#VU8978 Cross-site scripting in FortiOS - CVE-2017-7733
Published: October 27, 2017 / Updated: October 30, 2017
Vulnerability identifier: #VU8978
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-7733
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
FortiOS
FortiOS
Software vendor:
Fortinet, Inc
Fortinet, Inc
Description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists in the web management interface of Fortinet FortiOS due to insufficient sanitization of user-supplied data passed via webUI "Login Disclaimer" redir parameter. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Remediation
Update to version 5.4.6, 5.6.1 or later.