CVE-2017-14186 Cross-site scripting in FortiOS

What is CVE-2017-14186?

CVE-2017-14186 is a medium-severity cross-site scripting vulnerability in Fortinet Fortios, published on 29 Nov 2017. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A Cross-site Scripting (XSS) vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.7, 5.4 and below versions under SSL VPN web portal allows a remote user to inject arbitrary web script or HTML in the context of the victim's browser via the login redir parameter. An URL Redirection attack may also be feasible by injecting an external URL via the affected parameter.

Weakness: CWE-79

Which versions are affected by CVE-2017-14186?

It affects 1 product.

Products include Fortinet Fortios.

How do I fix CVE-2017-14186?

No fix has been published for CVE-2017-14186 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2017-14186 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-14186 exists.

Public exploit code: 1 Nuclei template.

Other vulnerabilities in Fortinet Fortios

• CVE-2024-23113 Fortinet Multiple Products Format String Exploited Critical 9.8
• CVE-2022-40684 Fortinet Multiple Products Authentication Bypass Exploited Critical 9.8
• CVE-2024-55591 Fortinet FortiOS and FortiProxy Authentication Bypass Exploited Critical 9.6
• CVE-2024-21762 Fortinet FortiOS Out-of-Bound Write Exploited Critical 9.6
• CVE-2022-42475 Fortinet FortiOS Heap-Based Buffer Overflow Exploited Critical 9.3

All Fortinet Fortios vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-c8pf-wf99-pr3g.