CVE-2023-48753

Restricted Site Access <= 7.4.1 - IP Spoofing to Protection Mechanism Bypass

2023-11-27 00:00

Strategic Overview

Status: Patched in 7.5.0
Affected Plugin: Restricted Site Access
Affected Version: <= 7.4.1
CVSS: 5.3Medium
Weakness type: CWE-348 · Use of Less Trusted Source
CVE: CVE-2023-48753

View all Restricted Site Access vulnerabilities

At a glance

CVE-2023-48753 is a medium-severity Use of Less Trusted Source vulnerability in the Restricted Site Access WordPress plugin, affecting versions <= 7.4.1. 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 7.5.0; sites on affected versions should update now. Disclosed November 2023, reported by Kévin Mosbahi (Mika).

Vulnerability Overview

The Restricted Site Access plugin for WordPress is vulnerable to IP Address Spoofing in versions up to, and including, 6.3.0. This is due to insufficient restrictions on where the IP Address information is being retrieved for user IP Addresses. This makes it possible for attackers to gain access to areas of the site that may have been restricted.

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-348: Use of Less Trusted Source

The product has two different sources of the same data or information, but it uses the source that has less support for verification, is less trusted, or is less resistant to attack.

Remediation

Update to version 7.5.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Restricted Site Access: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Restricted Site Access 7.5.0 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-48753 https://www.wordfence.com/threat-intel/vulnerabilities/id/804169d3-a53a-42ba-821d-e9647ac075c4 https://nvd.nist.gov/vuln/detail/CVE-2023-48753

Related records

Other vulnerabilities in Restricted Site Access

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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