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CVE-2018-13383

4.3 · MEDIUM Actively Exploited
Published May 29, 2019 fortinet CWE-787 EPSS 33.65% (98th pctl)

Overview

CVE-2018-13383 is a medium-severity vulnerability affecting fortinet fortiproxy. It was published on May 29, 2019 and has a CVSS 3.1 base score of 4.3 (MEDIUM). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical Description

A heap buffer overflow in Fortinet FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.10, 5.4.0 through 5.4.12, 5.2.14 and earlier and FortiProxy 2.0.0, 1.2.8 and earlier in the SSL VPN web portal may cause the SSL VPN web service termination for logged in users due to a failure to properly handle javascript href data when proxying webpages.

Remediation

Check the references section for vendor advisories and patches from fortinet. Update fortiproxy to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status
fortinet fortiproxy >= 0, < 1.2.9 Affected
fortinet fortios >= 5.2.0, < 5.2.15 Affected

Frequently Asked Questions

What is CVE-2018-13383?

CVE-2018-13383 is a medium-severity vulnerability affecting fortinet fortiproxy. It was published on May 29, 2019 and has a CVSS 3.1 base score of 4.3 (MEDIUM). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2018-13383?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2018-13383?

Check the references section for vendor advisories and patches from fortinet. Update fortiproxy to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-13383?

CyberStrike's AI-powered security agents can automatically detect CVE-2018-13383 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.