CVE-2022-0737

Text Hover <= 4.1 - Admin+ Stored Cross-Site Scripting

2022-04-09 00:00

Strategic Overview

Status: Patched in 4.2
Affected Plugin: Text Hover
Affected Version: <= 4.1
CVSS: 5.5Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2022-0737

At a glance

CVE-2022-0737 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Text Hover WordPress plugin, affecting versions <= 4.1. It carries a CVSS score of 5.5 (reachable over the network; low attack complexity). The issue is fixed in version 4.2; sites on affected versions should update now. Disclosed April 2022, reported by Rohan Chaudhari.

Vulnerability Overview

The Text Hover WordPress plugin before 4.2 does not sanitize and escape the text to hover, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.

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 Text Hover <= 4.1 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 Text Hover the fix is 4.2: builds <= 4.1 are affected, anything from 4.2 onward is not.

Remediation

Update to version 4.2, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Text Hover: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Text Hover 4.2 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-0737 https://www.wordfence.com/threat-intel/vulnerabilities/id/3d8b8f54-b2af-42dd-af82-c1e8726c87e2 https://nvd.nist.gov/vuln/detail/CVE-2022-0737

CVSS Vector

5.5

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

Base

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

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