CVE-2021-4226 RSFirewall < 1.1.25 - IP Block Bypass

2022-12-1517:14:40

WPScan

www.cve.org

cve-2021-4226

rsfirewall

ip block bypass

http headers

vulnerability

9.7 High

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

65.4%

JSON

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.

CNA Affected

[
  {
    "vendor": "Unknown",
    "product": "RSFirewall!",
    "versions": [
      {
        "status": "affected",
        "versionType": "custom",
        "version": "0",
        "lessThan": "1.1.25"
      }
    ],
    "defaultStatus": "unaffected",
    "collectionURL": "https://wordpress.org/plugins"
  }
]

References

wpscan.com/vulnerability/c0ed80c8-ebbf-4ed9-b02f-31660097c352