CVE-2022-0165

Page Builder KingComposer <= 2.9.6 - Open Redirect

2022-02-16 00:00
Krzysztof Zając

Strategic Overview

Status
Unpatched
Affected Plugin
Page Builder: KingComposer – Free Drag and Drop page builder by King-Theme
Affected Version
<= 2.9.6
CVSS
8.8High
Weakness type
CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
CVE
CVE-2022-0165
View all Page Builder: KingComposer – Free Drag and Drop page builder by King-Theme vulnerabilities

At a glance

CVE-2022-0165 is a high-severity URL Redirection to Untrusted Site ('Open Redirect') vulnerability in the Page Builder: KingComposer WordPress plugin, affecting versions <= 2.9.6. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed February 2022, reported by Krzysztof Zając.

Vulnerability Overview

The Page Builder KingComposer WordPress plugin through 2.9.6 does not validate the id parameter before redirecting the user to it via the kc_get_thumbn AJAX action available to both unauthenticated and authenticated users

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. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

Reaching this weakness in Page Builder: KingComposer <= 2.9.6 takes a caller who can reach the endpoint. An open redirect is a page that takes a destination from the request and sends the browser there without checking that the destination belongs to the site.

A link that starts on a trusted domain finishes on an attacker's, which is what makes phishing and consent-screen abuse credible to the person clicking it. No fixed build of this plugin is recorded for Page Builder: KingComposer yet, so installs running <= 2.9.6 stay exposed until the vendor ships one.

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?

The attempt arrives as an ordinary request to Page Builder: KingComposer: WordSec's web application firewall inspects request payloads before WordPress loads them. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-0165https://www.wordfence.com/threat-intel/vulnerabilities/id/36abba4d-9a73-4ef2-a910-6030acddd182https://nvd.nist.gov/vuln/detail/CVE-2022-0165

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C