CVE-2022-4410

Permalink Manager Lite <= 2.2.20.3 - Authenticated Stored Cross-Site Scripting

2022-12-14 00:00

Strategic Overview

Status: Patched in 2.3.0
Affected Plugin: Permalink Manager Lite
Affected Version: <= 2.2.20.3
CVSS: 6.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2022-4410

View all Permalink Manager Lite vulnerabilities

At a glance

CVE-2022-4410 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Permalink Manager Lite WordPress plugin, affecting versions <= 2.2.20.3. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account. The issue is fixed in version 2.3.0; sites on affected versions should update now. Disclosed December 2022, reported by Nicole Sheinin.

Vulnerability Overview

The Permalink Manager Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including 2.2.20.3 due to improper output escaping on post/page/media titles. This makes it possible for attackers to inject arbitrary web scripts on the permalink-manager page if another plugin or theme is installed on the site that allows lower privileged users with unfiltered_html the ability to modify post/page titles with malicious web scripts.

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')

Reaching this weakness in Permalink Manager Lite <= 2.2.20.3 takes any authenticated account. 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 Permalink Manager Lite the fix is 2.3.0: builds <= 2.2.20.3 are affected, anything from 2.3.0 onward is not.

Remediation

Update to version 2.3.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Permalink Manager Lite: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Permalink Manager Lite 2.3.0 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-4410 https://www.wordfence.com/threat-intel/vulnerabilities/id/6cbf9636-9d9d-44d4-b873-8920f2dbb846 https://nvd.nist.gov/vuln/detail/CVE-2022-4410

Related records

Same weakness class

Other vulnerabilities in Permalink Manager Lite

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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