CVE-2021-24534

PhoneTrack Meu Site Manager <= 0.1 - Cross-Site Scripting

2021-07-19 00:00

Strategic Overview

Status: Patched in 0.1.1
Affected Plugin: PhoneTrack Meu Site Manager
Affected Version: <= 0.1
CVSS: 6.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2021-24534

View all PhoneTrack Meu Site Manager vulnerabilities

At a glance

CVE-2021-24534 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the PhoneTrack Meu Site Manager WordPress plugin, affecting versions <= 0.1. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). The issue is fixed in version 0.1.1; sites on affected versions should update now. Disclosed July 2021, reported by Abishiek Magesh.

Vulnerability Overview

The PhoneTrack Meu Site Manager WordPress plugin through 0.1 does not sanitise or escape its "pht_id" setting before outputting it back in an attribute in the page, leading to a stored Cross-Site Scripting issue.

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 interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

PhoneTrack Meu Site Manager <= 0.1 carries this weakness at pht_id, and reaching it takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For PhoneTrack Meu Site Manager the fix is 0.1.1: builds <= 0.1 are affected, anything from 0.1.1 onward is not.

Remediation

Update to version 0.1.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to PhoneTrack Meu Site Manager: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: PhoneTrack Meu Site Manager 0.1.1 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-24534 https://www.wordfence.com/threat-intel/vulnerabilities/id/d5d7e59e-962c-45d9-b3be-033bccf4c6b1 https://nvd.nist.gov/vuln/detail/CVE-2021-24534

CVSS Vector

6.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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