Strategic Overview
- Status
- Patched in 1.6.3
- Affected Plugin
- WP24 Domain Check
- Affected Version
<= 1.6.2- CVSS
- 5.5Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-47984
At a glance
CVE-2021-47984 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the WP24 Domain Check WordPress plugin, affecting versions <= 1.6.2. It carries a CVSS score of 5.5 (reachable over the network; low attack complexity). The issue is fixed in version 1.6.3; sites on affected versions should update now. Disclosed January 2021, reported by Mehmet Kelepce.
Vulnerability Overview
The WP24 Domain Check plugin for WordPress is vulnerable to Stored Cross-Site Scripting via several parameters in versions up to, and including, 1.6.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts 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 interaction from a victim user.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in WP24 Domain Check <= 1.6.2 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 WP24 Domain Check the fix is 1.6.3: builds <= 1.6.2 are affected, anything from 1.6.3 onward is not.
Remediation
Update to version 1.6.3, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to WP24 Domain Check: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WP24 Domain Check 1.6.3 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
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