CVE-2022-4032

Quiz and Survey Master <= 8.0.4 - Unauthenticated iFrame Injection via Paragraph and Short Answer

2022-11-29 00:00
Luca Greeb

Strategic Overview

Status
Patched in 8.0.5
Affected Plugin
Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker
Affected Version
<= 8.0.4
CVSS
7.2High
Weakness type
CWE-20 · Improper Input Validation
CVE
CVE-2022-4032
View all Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker vulnerabilities

At a glance

CVE-2022-4032 is a high-severity Improper Input Validation vulnerability in the Quiz and Survey Master (QSM) WordPress plugin, affecting versions <= 8.0.4. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 8.0.5; sites on affected versions should update now. Disclosed November 2022, reported by Luca Greeb.

Vulnerability Overview

The Quiz and Survey Master plugin for WordPress is vulnerable to iFrame Injection via the 'question[id]' parameter in versions up to, and including, 8.0.4 due to insufficient input sanitization and output escaping that allowed iframe tags to be injected. This makes it possible for unauthenticated attackers to inject iFrames in pages that will execute whenever a user accesses an injected page.

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 privileges on the target site, and no interaction from a victim user.

CWE-20: Improper Input Validation

Quiz and Survey Master (QSM) <= 8.0.4 carries this weakness at question[id], and reaching it takes no account at all. Improper input validation means the application accepts input without confirming it has the form, type or range the code downstream assumes.

The concrete impact depends on where the unvalidated value lands, which is why records in this class range from cosmetic bugs to full compromise. For Quiz and Survey Master (QSM) the fix is 8.0.5: builds <= 8.0.4 are affected, anything from 8.0.5 onward is not.

Remediation

Update to version 8.0.5, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Quiz and Survey Master (QSM) 8.0.5 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-4032https://www.wordfence.com/threat-intel/vulnerabilities/id/b901b3f8-8bbd-42ef-8e0c-de6d09c4950fhttps://nvd.nist.gov/vuln/detail/CVE-2022-4032

Related records

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