CVE-2015-9368

Easy EU Value Added (VAT) Taxes < 1.2.0 - Reflected Cross-Site Scripting

2015-04-20 00:00

Strategic Overview

Status: Patched in 1.2.0
Affected Plugin: Easy EU Value Added (VAT) Taxes Add-on
Affected Version: < 1.2.0
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2015-9368

View all Easy EU Value Added (VAT) Taxes Add-on vulnerabilities

At a glance

CVE-2015-9368 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Easy EU Value Added (VAT) Taxes Add-on WordPress plugin, affecting versions < 1.2.0. 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 1.2.0; sites on affected versions should update now. Disclosed April 2015, reported by Sucuri Research Team.

Vulnerability Overview

Easy EU Value Added (VAT) Taxes Add-on for iThemes Exchange before 1.2.0 for WordPress has XSS via add_query_arg() and remove_query_arg().

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')

Easy EU Value Added (VAT) Taxes Add-on < 1.2.0 carries this weakness at add_query_arg(), 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 Easy EU Value Added (VAT) Taxes Add-on the fix is 1.2.0: builds < 1.2.0 are affected, anything from 1.2.0 onward is not.

Remediation

Update to version 1.2.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Easy EU Value Added (VAT) Taxes Add-on: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Easy EU Value Added (VAT) Taxes Add-on 1.2.0 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2015-9368 https://www.wordfence.com/threat-intel/vulnerabilities/id/1d6faee0-716e-4aa9-a841-5231c7aaff21 https://nvd.nist.gov/vuln/detail/CVE-2015-9368

CVSS Vector

6.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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