CVE-2018-0578

PixelYourSite <= 5.2.1 - Reflected Cross-Site Scripting

2018-04-27 00:00
Chris Liu

Strategic Overview

Status
Patched in 5.3.0
Affected Plugin
PixelYourSite – Your smart PIXEL (TAG) & API Manager
Affected Version
< 5.3.0
CVSS
5.4Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2018-0578
View all PixelYourSite – Your smart PIXEL (TAG) & API Manager vulnerabilities

At a glance

CVE-2018-0578 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the PixelYourSite WordPress plugin, affecting versions < 5.3.0. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The issue is fixed in version 5.3.0; sites on affected versions should update now. Disclosed April 2018, reported by Chris Liu.

Vulnerability Overview

The PixelYourSite plugin for WordPress is vulnerable to Reflected Cross-Site Scripting in versions up to, and including, 5.2.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

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 PixelYourSite < 5.3.0 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 PixelYourSite the fix is 5.3.0: builds < 5.3.0 are affected, anything from 5.3.0 onward is not.

Remediation

Update to version 5.3.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to PixelYourSite: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: PixelYourSite 5.3.0 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2018-0578https://www.wordfence.com/threat-intel/vulnerabilities/id/78ca8110-fd39-4fcb-bac7-94732c14aee2https://nvd.nist.gov/vuln/detail/CVE-2018-0578

Related records

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