CVE-2018-13380 Cross-site scripting in Fortinet FortiOS and FortiProxy

What is CVE-2018-13380?

CVE-2018-13380 is a medium-severity cross-site scripting vulnerability in Fortinet Fortios, published on 4 Jun 2019. An attacker can exploit it over the internet without logging in, 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, 5.4.0 to 5.4.12, 5.2 and below and Fortinet FortiProxy 2.0.0, 1.2.8 and below under SSL VPN web portal allows attacker to execute unauthorized malicious script code via the error or message handling parameters.

Weakness: CWE-79

Which versions are affected by CVE-2018-13380?

It affects 2 products.

Products include Fortinet Fortios, Fortinet Fortiproxy.

How do I fix CVE-2018-13380?

No fix has been published for CVE-2018-13380 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-2018-13380 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-13380 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-p6vg-vj3x-m483.