Buffer overflow in FortiOS - CVE-2018-13383
Published: May 29, 2019 / Updated: February 20, 2022
Vulnerability identifier: #VU31052
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-13383
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to compromise the affected system.
The vulnerability exists due to a boundary error when parsing web pages in the SSL VPN web portal. A remote attacker can create a specially crafted web page with malicious javascript href data, trick the authenticated user to visit it, trigger a buffer overflow and execute arbitrary code on the system.
Affected software
FortiOS
FortiProxy
FortiProxy
How to mitigate CVE-2018-13383
Install update from vendor's website.
FortiOS - update to 6.0.5
FortiProxy - addressed in versions 1.2.9, 2.0.1
FortiProxy - addressed in versions 1.2.9, 2.0.1