New! Vulnerability Priority Rating (VPR)
Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.
VPR Score: 3
SynopsisThe remote host is affected by a host header redirection vulnerability.
DescriptionThe remote host is running a version of FortiOS prior to 5.2.15 or 5.4.0 prior to 6.0.5. It is, therefore, affected by a host header redirection vulnerability in the SSL VPN web portal due to a failure to properly validate HTTP request headers. An unauthenticated, remote attacker can exploit this, via a specially crafted HTTP request to redirect SSL VPN web portal users to arbitrary web domains.
SolutionUpgrade to Fortinet FortiOS version to 5.2.15, 6.0.5 or 6.2.0 or later. Alternatively, apply one of the workarounds outlined in the linked advisory