WordPress Core < 4.2.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

2015-07-23 00:00

Jon Cave

Strategic Overview

Status

Patched in 3.7.9

Affected CoreWordPress 4.2

Affected Version3.7 – 4.2.2 · 7 branches

CVSS6.4Medium

CVECVE-2015-5622

View all WordPress 4.2 vulnerabilities

Vulnerability Overview

Cross-site scripting (XSS) vulnerability in WordPress before 4.2.3 allows remote authenticated users to inject arbitrary web script or HTML by leveraging the Author or Contributor role to place a crafted shortcode inside an HTML element, related to wp-includes/kses.php and wp-includes/shortcodes.php.

Technical Analysis

REMEDIATION: Update to one of the following versions, or a newer patched version: 3.7.9, 3.8.9, 3.9.7, 4.0.6, 4.1.6, 4.2.3 --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2015-5622 https://www.wordfence.com/threat-intel/vulnerabilities/id/4d3191b0-829f-4d35-b8f6-323e7ea6f80b

CVSS Vector

6.4

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

Base

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

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