CVE-2021-24250

Business Directory Plugin <= 5.11.1 - Authenticated Stored Cross-Site Scripting

2021-04-12 00:00
0xB9

Strategic Overview

Status
Patched in 5.11.2
Affected Version
<= 5.11.1
CVSS
5.4Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2021-24250
View all Business Directory Plugin – Easy Listing & Member Directories for WordPress vulnerabilities

At a glance

CVE-2021-24250 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Business Directory Plugin WordPress plugin, affecting versions <= 5.11.1. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account. The issue is fixed in version 5.11.2; sites on affected versions should update now. Disclosed April 2021, reported by 0xB9.

Vulnerability Overview

The Business Directory Plugin – Easy Listing Directories for WordPress WordPress plugin before 5.11.2 suffered from lack of sanitisation in the label of the Form Fields, leading to Authenticated Stored Cross-Site Scripting issues across various pages of the plugin.

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')

Reaching this weakness in Business Directory Plugin <= 5.11.1 takes any authenticated account. 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 Business Directory Plugin the fix is 5.11.2: builds <= 5.11.1 are affected, anything from 5.11.2 onward is not.

Remediation

Update to version 5.11.2, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Business Directory Plugin: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Business Directory Plugin 5.11.2 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

Related records

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