CVE-2022-4100

WP Cerber Security <= 9.4 - IP Protection Bypass

2024-08-30 00:00

Strategic Overview

Status: Patched in 9.5
Affected Plugin: WP Cerber Security, Anti-spam & Malware Scan
Affected Version: <= 9.4
CVSS: 5.3Medium
Weakness type: CWE-693 · Protection Mechanism Failure
CVE: CVE-2022-4100

View all WP Cerber Security, Anti-spam & Malware Scan vulnerabilities

At a glance

CVE-2022-4100 is a medium-severity Protection Mechanism Failure vulnerability in the WP Cerber Security, Anti-spam & Malware Scan WordPress plugin, affecting versions <= 9.4. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 9.5; sites on affected versions should update now. Disclosed August 2024, reported by chihyu.

Vulnerability Overview

The WP Cerber Security plugin for WordPress is vulnerable to IP Protection bypass in versions up to, and including 9.4 due to the plugin improperly checking for a visitor's IP address. This makes it possible for an attacker whose IP address has been blocked to bypass this control by setting the X-Forwarded-For: HTTP header to an IP Address that hasn't been blocked.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-693: Protection Mechanism Failure

The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Remediation

Update to version 9.5, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: WP Cerber Security, Anti-spam & Malware Scan 9.5 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-4100 https://www.wordfence.com/threat-intel/vulnerabilities/id/03ccd474-42f4-4cbb-823e-93fe4db1bf80 https://nvd.nist.gov/vuln/detail/CVE-2022-4100

Related records

Other vulnerabilities in WP Cerber Security, Anti-spam & Malware Scan

CVSS Vector

5.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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