WordPress Core < 4.5.2 - Cross-Site Scripting via MediaElement.js

2016-05-06 00:00

Mario Heiderich

Strategic Overview

Status

Patched in 3.7.14

Affected CoreWordPress 4.5

Affected Version3.7 – 4.5.1 · 10 branches

CVSS6.4Medium

CVECVE-2016-4567

View all WordPress 4.5 vulnerabilities

Vulnerability Overview

Cross-site scripting (XSS) vulnerability in flash/FlashMediaElement.as in MediaElement.js before 2.21.0, as used in WordPress before 4.5.2, allows remote attackers to inject arbitrary web script or HTML via an obfuscated form of the jsinitfunction parameter, as demonstrated by "jsinitfunctio%gn."

Technical Analysis

REMEDIATION: Update to one of the following versions, or a newer patched version: 3.7.14, 3.8.14, 3.9.12, 4.0.11, 4.1.11, 4.2.8, 4.3.4, 4.4.3, 4.5.2 --- 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-2016-4567 https://www.wordfence.com/threat-intel/vulnerabilities/id/0987285b-4daf-4979-934b-7fa4a0ded99f

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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