CVE-2015-9430

Crazy Bone < 0.6.0 - Stored Cross-Site Scripting

2015-08-21 00:00
Marcin Probola

Strategic Overview

Status
Patched in 0.6.0
Affected Plugin
Crazy Bone
Affected Version
< 0.6.0
CVSS
7.2High
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2015-9430
View all Crazy Bone vulnerabilities

At a glance

CVE-2015-9430 is a high-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Crazy Bone WordPress plugin, affecting versions < 0.6.0. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 0.6.0; sites on affected versions should update now. Disclosed August 2015, reported by Marcin Probola.

Vulnerability Overview

The crazy-bone plugin before 0.6.0 for WordPress has XSS via the User-Agent HTTP header

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, and no interaction from a victim user.

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

Reaching this weakness in Crazy Bone < 0.6.0 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 Crazy Bone the fix is 0.6.0: builds < 0.6.0 are affected, anything from 0.6.0 onward is not.

Remediation

Update to version 0.6.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Crazy Bone: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Crazy Bone 0.6.0 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

Related records

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