CVE-2022-23987

WS Form LITE and Pro < 1.8.176 - Stored Cross-Site Scripting

2022-01-31 00:00

Strategic Overview

Status: Patched in 1.8.176
Affected Plugin: WS Form LITE – Drag & Drop Contact Form Builder
Affected Version: < 1.8.176
CVSS: 4.8Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2022-23987

View all WS Form LITE – Drag & Drop Contact Form Builder vulnerabilities

At a glance

CVE-2022-23987 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the WS Form LITE WordPress plugin, affecting versions < 1.8.176. It carries a CVSS score of 4.8 (reachable over the network; low attack complexity). The issue is fixed in version 1.8.176; sites on affected versions should update now. Disclosed January 2022, reported by Felipe Restrepo Rodriguez (pfelilpe).

Vulnerability Overview

The WS Form LITE and Pro WordPress plugins before 1.8.176 do not sanitise and escape their Form Name, 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.

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

Reaching this weakness in WS Form LITE < 1.8.176 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 WS Form LITE the fix is 1.8.176: builds < 1.8.176 are affected, anything from 1.8.176 onward is not.

Remediation

Update to version 1.8.176, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to WS Form LITE: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WS Form LITE 1.8.176 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-23987 https://www.wordfence.com/threat-intel/vulnerabilities/id/bd650510-2d1c-48a1-a5fa-d4c26f3d030c https://nvd.nist.gov/vuln/detail/CVE-2022-23987

Related records

Same weakness class

Other vulnerabilities in WS Form LITE – Drag & Drop Contact Form Builder

CVSS Vector

4.8

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

Base

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

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