CVE-2021-41027 Memory corruption in Fortinet FortiWeb
An authenticated attacker can execute unauthorized code via crafted certificates due to a stack-based buffer overflow in FortiWeb.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-41027?
CVE-2021-41027 is a high-severity memory corruption vulnerability in Fortinet Fortiweb, published on 8 Dec 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A stack-based buffer overflow in Fortinet FortiWeb version 6.4.1 and 6.4.0, allows an authenticated attacker to execute unauthorized code or commands via crafted certificates loaded into the device.
Weakness: CWE-787
Which versions are affected by CVE-2021-41027?
It affects 1 product.
Products include Fortinet Fortiweb.
How do I fix CVE-2021-41027?
No fix has been published for CVE-2021-41027 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-41027 being exploited?
There is no known exploitation of CVE-2021-41027 in the wild and no public exploit code.
Other vulnerabilities in Fortinet Fortiweb
Sources
Also known as GHSA-jgm2-2f8q-fj63.