CVE-2021-36167 Missing authorization in Fortinet FortiClientWindows
An unauthenticated attacker can bypass web filter controls in FortiClient Windows by modifying the session-id parameter.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-36167?
CVE-2021-36167 is a medium-severity missing authorization vulnerability in Fortinet Forticlient, published on 9 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An improper authorization vulnerabiltiy [CWE-285] in FortiClient Windows versions 7.0.0 and 6.4.6 and below and 6.2.8 and below may allow an unauthenticated attacker to bypass the webfilter control via modifying the session-id paramater.
Which versions are affected by CVE-2021-36167?
It affects 1 product.
Products include Fortinet Forticlient.
How do I fix CVE-2021-36167?
No fix has been published for CVE-2021-36167 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-2021-36167 being exploited?
There is no known exploitation of CVE-2021-36167 in the wild and no public exploit code.
Other vulnerabilities in Fortinet Forticlient
- CVE-2019-17658 Privilege escalation in Fortinet FortiClientWindows
- CVE-2023-45590 Code injection in FortiClientLinux
- CVE-2017-14184 Information disclosure in FortiClient SSLVPN Client for Linux
- CVE-2016-8493 Privilege escalation in Fortinet FortiClient
- CVE-2020-15934 Privilege escalation in FortiClientLinux
Sources
Also known as GHSA-2c7f-7v62-c4p8.