CVE-2021-24251

Business Directory Plugin <= 5.11.1 - Cross-Site Request Forgery to Arbitrary Payment History Update

2021-04-12 00:00
0xB9

Strategic Overview

Status
Patched in 5.11.2
Affected Plugin
Business Directory Plugin – Easy Listing & Member Directories for WordPress
Affected Version
<= 5.11.1
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2021-24251
View all Business Directory Plugin – Easy Listing & Member Directories for WordPress vulnerabilities

At a glance

CVE-2021-24251 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Business Directory Plugin WordPress plugin, affecting versions <= 5.11.1. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. 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 a Cross-Site Request Forgery issue, allowing an attacker to make a logged in administrator update arbitrary payment history, such as change their status (from pending to completed to example)

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.

CWE-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in Business Directory Plugin <= 5.11.1 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. 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

https://www.cve.org/CVERecord?id=CVE-2021-24251https://www.wordfence.com/threat-intel/vulnerabilities/id/c2487a5e-f038-414b-bc88-ed2c7f2c624chttps://nvd.nist.gov/vuln/detail/CVE-2021-24251

Related records

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