CVE-2020-29016 Memory corruption in Fortinet FortiWeb
Unauthenticated remote attackers can execute arbitrary code via a stack-based buffer overflow in FortiWeb caused by a crafted request with a large certname.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-29016?
CVE-2020-29016 is a critical memory corruption vulnerability in Fortinet Fortiweb, published on 14 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A stack-based buffer overflow vulnerability in FortiWeb 6.3.0 through 6.3.5 and version before 6.2.4 may allow an unauthenticated, remote attacker to overwrite the content of the stack and potentially execute arbitrary code by sending a crafted request with a large certname.
Weakness: CWE-787
Which versions are affected by CVE-2020-29016?
It affects 1 product.
Products include Fortinet Fortiweb.
How do I fix CVE-2020-29016?
No fix has been published for CVE-2020-29016 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-2020-29016 being exploited?
There is no known exploitation of CVE-2020-29016 in the wild and no public exploit code.
Other vulnerabilities in Fortinet Fortiweb
Sources
Also known as GHSA-4chx-4wv3-ph6v.