CVE-2021-24388

Vik Rent Car <= 1.1.6 - Cross-Site Request Forgery to Stored Cross-Site Scripting

2021-06-14 00:00
Satyender Yadav

Strategic Overview

Status
Patched in 1.1.7
Affected Plugin
VikRentCar Car Rental Management System
Affected Version
<= 1.1.6
CVSS
6.1Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2021-24388
View all VikRentCar Car Rental Management System vulnerabilities

At a glance

CVE-2021-24388 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the VikRentCar Car Rental Management System WordPress plugin, affecting versions <= 1.1.6. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.1.7; sites on affected versions should update now. Disclosed June 2021, reported by Satyender Yadav.

Vulnerability Overview

In the VikRentCar Car Rental Management System WordPress plugin before 1.1.7, there is a custom field option by which we can manage all the fields that the users will have to fill in before saving the order. However, the field name is not sanitised or escaped before being output back in the page, leading to a stored Cross-Site Scripting issue. There is also no CSRF check done before saving the setting, allowing attackers to make a logged in admin set arbitrary Custom Fields, including one with XSS payload in 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, and no privileges on the target site.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in VikRentCar Car Rental Management System <= 1.1.6 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 VikRentCar Car Rental Management System the fix is 1.1.7: builds <= 1.1.6 are affected, anything from 1.1.7 onward is not.

Remediation

Update to version 1.1.7, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to VikRentCar Car Rental Management System: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: VikRentCar Car Rental Management System 1.1.7 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-24388https://www.wordfence.com/threat-intel/vulnerabilities/id/8a79fda3-44eb-41fd-b049-971b959daecfhttps://nvd.nist.gov/vuln/detail/CVE-2021-24388

Related records

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