CVE-2023-5133

User Activity Log Pro <= 2.3.3 - Tracking Bypass via IP Spoofing

2023-09-25 00:00

Strategic Overview

Status: Patched in 2.3.4
Affected Plugin: User Activity Log Pro
Affected Version: <= 2.3.3
CVSS: 5.3Medium
Weakness type: CWE-20 · Improper Input Validation
CVE: CVE-2023-5133

View all User Activity Log Pro vulnerabilities

At a glance

CVE-2023-5133 is a medium-severity Improper Input Validation vulnerability in the User Activity Log Pro WordPress plugin, affecting versions <= 2.3.3. 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 2.3.4; sites on affected versions should update now. Disclosed September 2023, reported by Bartłomiej Marek.

Vulnerability Overview

The User Activity Log Pro plugin for WordPress is vulnerable to IP Address Spoofing in versions up to, and including, 2.3.3 due to insufficient IP address validation. This makes it possible for attackers to perform actions that are attributed to IP values that they control, rather than to the correct IP.

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-20: Improper Input Validation

Reaching this weakness in User Activity Log Pro <= 2.3.3 takes a caller who can reach the endpoint. Improper input validation means the application accepts input without confirming it has the form, type or range the code downstream assumes.

The concrete impact depends on where the unvalidated value lands, which is why records in this class range from cosmetic bugs to full compromise. For User Activity Log Pro the fix is 2.3.4: builds <= 2.3.3 are affected, anything from 2.3.4 onward is not.

Remediation

Update to version 2.3.4, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to User Activity Log Pro: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: User Activity Log Pro 2.3.4 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-5133 https://www.wordfence.com/threat-intel/vulnerabilities/id/9666913e-55a3-441c-85ef-8a12756e37ba https://nvd.nist.gov/vuln/detail/CVE-2023-5133

Related records

Other vulnerabilities in User Activity Log Pro

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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