CVE-2021-4227

ark-commenteditor <= 2.15.6 - iframe Injection

2021-09-23 00:00

Strategic Overview

Status: Unpatched
Affected Plugin: ark-commenteditor
Affected Version: <= 2.15.6
CVSS: 7.2High
Weakness type: CWE-1021 · Improper Restriction of Rendered UI Layers or Frames
CVE: CVE-2021-4227

View all ark-commenteditor vulnerabilities

At a glance

CVE-2021-4227 is a high-severity Improper Restriction of Rendered UI Layers or Frames vulnerability in the ark-commenteditor WordPress plugin, affecting versions <= 2.15.6. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed September 2021, reported by Rasi Afeef.

Vulnerability Overview

The ark-commenteditor plugin for WordPress is vulnerable to iFrame Injection in versions up to, and including 2.15.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject iFrame elements in comments that will load pages from any source.

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-1021: Improper Restriction of Rendered UI Layers or Frames

The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain.

Remediation

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

How does WordSec protect against this?

No patched version is recorded yet, so there is nothing to update to; WordSec's vulnerability alerts flag this record the moment that changes.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-4227 https://www.wordfence.com/threat-intel/vulnerabilities/id/8a1179bc-6f8d-4223-a80b-9834adc08d3b https://nvd.nist.gov/vuln/detail/CVE-2021-4227

CVSS Vector

7.2

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

Base

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

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