CVE-2021-4226 — CRITICAL (9.8)

Q: What is CVE-2021-4226?

CVE-2021-4226 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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.

Q: How severe is CVE-2021-4226?

CVE-2021-4226 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2021-4226?

Check the references section above for vendor advisories and patch information. Affected products include: Rsjoomla Rsfirewall\!.

Vulnerability 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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Rsjoomla	Rsfirewall\!	< 1.1.25

Related Weaknesses (CWE)

CWE-345

References

https://wpscan.com/vulnerability/c0ed80c8-ebbf-4ed9-b02f-31660097c352ExploitThird Party Advisory
https://wpscan.com/vulnerability/c0ed80c8-ebbf-4ed9-b02f-31660097c352ExploitThird Party Advisory

FAQ

What is CVE-2021-4226?

CVE-2021-4226 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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.

How severe is CVE-2021-4226?

CVE-2021-4226 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-4226?

Check the references section above for vendor advisories and patch information. Affected products include: Rsjoomla Rsfirewall\!.