Admin Columns Free < 4.3 and Pro < 5.5.1 Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 5.5.1
- Affected Plugin
- Admin Columns Pro
- Affected Version
< 5.5.1- CVSS
- 5.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24366
At a glance
CVE-2021-24366 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Admin Columns Pro WordPress plugin, affecting versions < 5.5.1. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The issue is fixed in version 5.5.1; sites on affected versions should update now. Disclosed May 2021, reported by Daniel Elkabes.
Vulnerability Overview
The Admin Columns Free WordPress plugin before 4.3 and Admin Columns Pro WordPress plugin before 5.5.1, rendered input on the posted pages with improper input validation on the value passed into the field 'Label' parameter, by taking this as an advantage an authenticated attacker can supply a crafted arbitrary script and execute it.
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')
Admin Columns Pro < 5.5.1 carries this weakness at Label, and reaching it 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 Admin Columns Pro the fix is 5.5.1: builds < 5.5.1 are affected, anything from 5.5.1 onward is not.
Remediation
Update to version 5.5.1, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Admin Columns Pro: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Admin Columns Pro 5.5.1 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Admin Columns Pro
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