CVE-2021-25106

Privacy Policy Generator, Terms & Conditions Generator - WPLegalPages <= 2.7.0 - Arbitrary Settings Update to Stored Cross-Site Scripting

2022-01-05 00:00
Krzysztof Zając

Strategic Overview

Status
Patched in 2.7.1
Affected Plugin
Privacy Policy Generator, Terms & Conditions, GDPR, CCPA, Cookie Policy & Disclaimer Templates – WPLP Legal Pages
Affected Version
< 2.7.1
CVSS
5.4Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2021-25106
View all Privacy Policy Generator, Terms & Conditions, GDPR, CCPA, Cookie Policy & Disclaimer Templates – WPLP Legal Pages vulnerabilities

At a glance

CVE-2021-25106 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Privacy Policy Generator, Terms & Conditions, GDPR, CCPA, Cookie Policy & Disclaimer Templates WordPress plugin, affecting versions < 2.7.1. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The issue is fixed in version 2.7.1; sites on affected versions should update now. Disclosed January 2022, reported by Krzysztof Zając.

Vulnerability Overview

The Privacy Policy Generator, Terms & Conditions Generator WordPress Plugin : WPLegalPages WordPress plugin before 2.7.1 does not check for authorisation and has a flawed CSRF logic when saving its settings, allowing any authenticated users, such as subscriber, to update them. Furthermore, due to the lack of sanitisation and escaping, it could lead to Stored Cross-Site Scripting

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed.

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

Reaching this weakness in Privacy Policy Generator, Terms & Conditions, GDPR, CCPA, Cookie Policy & Disclaimer Templates < 2.7.1 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 Privacy Policy Generator, Terms & Conditions, GDPR, CCPA, Cookie Policy & Disclaimer Templates the fix is 2.7.1: builds < 2.7.1 are affected, anything from 2.7.1 onward is not.

Remediation

Update to version 2.7.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Privacy Policy Generator, Terms & Conditions, GDPR, CCPA, Cookie Policy & Disclaimer Templates: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Privacy Policy Generator, Terms & Conditions, GDPR, CCPA, Cookie Policy & Disclaimer Templates 2.7.1 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-25106https://www.wordfence.com/threat-intel/vulnerabilities/id/3e85adbd-7e82-4949-916b-20aba1f97bf1https://nvd.nist.gov/vuln/detail/CVE-2021-25106

Related records

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