CVE-2021-22128 Missing authorization in Fortinet FortiProxy
Authenticated attackers can bypass access controls to reach internal ZebOS Shell via Quick Connection, enabling privilege escalation and potential code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-22128?
CVE-2021-22128 is a high-severity missing authorization vulnerability in Fortinet Fortiproxy, published on 4 Mar 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An improper access control vulnerability in FortiProxy SSL VPN portal 2.0.0, 1.2.9 and below versions may allow an authenticated, remote attacker to access internal service such as the ZebOS Shell on the FortiProxy appliance through the Quick Connection functionality.
Which versions are affected by CVE-2021-22128?
It affects 1 product.
Products include Fortinet Fortiproxy.
How do I fix CVE-2021-22128?
No fix has been published for CVE-2021-22128 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-22128 being exploited?
There is no known exploitation of CVE-2021-22128 in the wild and no public exploit code.
Other vulnerabilities in Fortinet Fortiproxy
Sources
Also known as GHSA-mm5g-p9fc-43hm.