CVE-2021-4226 RSFirewall < 1.1.25 - IP Block Bypass
Attackers can bypass IP blocking restrictions in RSFirewall by manipulating HTTP headers, allowing unauthorized access to protected resources.
- 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-2021-4226?
CVE-2021-4226 is a critical vulnerability in Unknown RSFirewall!, published on 15 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
RSFirewall tries to identify the original IP address by looking at different HTTP headers. A bypass is possible due to the way it is implemented.
Weakness: CWE-345
Which versions are affected by CVE-2021-4226?
It affects 1 product.
Products include Rsjoomla Rsfirewall\!.
How do I fix CVE-2021-4226?
No fix has been published for CVE-2021-4226 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-4226 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-4226 exists.
Sources
Also known as GHSA-j8wj-77mv-262g.