Duplicator < 1.1.4 - Cross-Site Request Forgery

2016-02-09 00:00
Ratiosec

Strategic Overview

Status
Patched in 1.1.4
Affected Plugin
Duplicator – Backups & Migration Plugin – Cloud Backups, Scheduled Backups, & More
Affected Version
< 1.1.4
CVSS
6.5Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE pending
View all Duplicator – Backups & Migration Plugin – Cloud Backups, Scheduled Backups, & More vulnerabilities

At a glance

This record tracks a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Duplicator WordPress plugin, affecting versions < 1.1.4. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires no authentication. The issue is fixed in version 1.1.4; sites on affected versions should update now. Disclosed February 2016, reported by Ratiosec.

Vulnerability Overview

The Duplicator plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.1.3. This is due to missing or incorrect nonce validation on the duplicator_package_build function. This makes it possible for unauthenticated attackers to create and download database and codebase backups via forged request granted they can trick an authenticated 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, and no privileges on the target site. A successful exploit has high impact on confidentiality.

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

Reaching this weakness in Duplicator < 1.1.4 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 Duplicator the fix is 1.1.4: builds < 1.1.4 are affected, anything from 1.1.4 onward is not.

Remediation

Update to version 1.1.4, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Duplicator: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Duplicator 1.1.4 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/3f753961-3eeb-402d-876f-4a4dea41a96a

Related records

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