CVE-2023-48271

Maspik – Spam blacklist <= 0.10.3 - Bypass

2023-11-21 00:00

Strategic Overview

Status: Patched in 0.10.4
Affected Plugin: Spam Protection | Maspik
Affected Version: <= 0.10.3
CVSS: 5.3Medium
Weakness type: CWE-348 · Use of Less Trusted Source
CVE: CVE-2023-48271

View all Spam Protection | Maspik vulnerabilities

At a glance

CVE-2023-48271 is a medium-severity Use of Less Trusted Source vulnerability in the Spam Protection WordPress plugin, affecting versions <= 0.10.3. 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 0.10.4; sites on affected versions should update now. Disclosed November 2023, reported by Kévin Mosbahi (Mika).

Vulnerability Overview

The Maspik – Spam Blacklist plugin for WordPress is vulnerable to IP Filtering Bypass in all versions up to, and including, 0.10.3 due to insufficient IP address validation. This makes it possible for unauthenticated attackers to bypass IP-based restrictions.

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 0.10.4, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Spam Protection: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Spam Protection 0.10.4 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-48271 https://www.wordfence.com/threat-intel/vulnerabilities/id/f3a8273e-2439-4138-941e-379d130e0c74 https://nvd.nist.gov/vuln/detail/CVE-2023-48271

Related records

Other vulnerabilities in Spam Protection | Maspik

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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