Stack-based buffer overflow in FortiWeb - CVE-2020-29016
Published: January 5, 2021
Vulnerability identifier: #VU49281
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-29016
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing HTTP requests. A remote unauthenticated attacker can send a crafted request with a large certname, trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
FortiWeb
How to mitigate CVE-2020-29016
Install updates from vendor's website.
FortiWeb - addressed in versions 6.2.4, 6.3.6