CVE-2021-24724

Timetable and Event Schedule by MotoPress <= 2.3.18 - Author+ Stored Cross-Site Scripting

2021-08-23 00:00
Martin Vierula

Strategic Overview

Status
Patched in 2.3.19
Affected Plugin
Timetable and Event Schedule by MotoPress
Affected Version
<= 2.3.18
CVSS
5.4Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2021-24724
View all Timetable and Event Schedule by MotoPress vulnerabilities

At a glance

CVE-2021-24724 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Timetable and Event Schedule by MotoPress WordPress plugin, affecting versions <= 2.3.18. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The issue is fixed in version 2.3.19; sites on affected versions should update now. Disclosed August 2021, reported by Martin Vierula.

Vulnerability Overview

The Timetable and Event Schedule by MotoPress WordPress plugin before 2.3.19 does not sanitise some of its parameters, which could allow low privilege users such as author to perform XSS attacks against frontend and backend users when viewing the related event/s

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 Timetable and Event Schedule by MotoPress <= 2.3.18 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 Timetable and Event Schedule by MotoPress the fix is 2.3.19: builds <= 2.3.18 are affected, anything from 2.3.19 onward is not.

Remediation

Update to version 2.3.19, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Timetable and Event Schedule by MotoPress: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Timetable and Event Schedule by MotoPress 2.3.19 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-24724https://www.wordfence.com/threat-intel/vulnerabilities/id/ad359327-9d53-4c8e-bd09-7a337711cfbdhttps://nvd.nist.gov/vuln/detail/CVE-2021-24724

Related records

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