CVE-2020-14959

Easy Testimonials <= 3.5.2 - Authenticated Stored Cross-Site Scripting

2020-05-13 00:00

Strategic Overview

Status: Patched in 3.6
Affected Plugin: Easy Testimonials
Affected Version: <= 3.5.2
CVSS: 5.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2020-14959

View all Easy Testimonials vulnerabilities

At a glance

CVE-2020-14959 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Easy Testimonials WordPress plugin, affecting versions <= 3.5.2. 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 3.6; sites on affected versions should update now. Disclosed May 2020, reported by Ngo Van Thien.

Vulnerability Overview

Multiple XSS vulnerabilities in the Easy Testimonials plugin before 3.6 for WordPress allow remote attackers to inject arbitrary web script or HTML via the wp-admin/post.php Client Name, Position, Web Address, Other, Location Reviewed, Product Reviewed, Item Reviewed, or Rating parameter.

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 Easy Testimonials <= 3.5.2 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 Easy Testimonials the fix is 3.6: builds <= 3.5.2 are affected, anything from 3.6 onward is not.

Remediation

Update to version 3.6, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Easy Testimonials: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Easy Testimonials 3.6 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2020-14959 https://www.wordfence.com/threat-intel/vulnerabilities/id/b47f9624-1829-42b7-8afb-fe25b234df72 https://nvd.nist.gov/vuln/detail/CVE-2020-14959

Related records

Same weakness class

Other vulnerabilities in Easy Testimonials

CVSS Vector

5.4

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

Base

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

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