WordPress Core < 4.9.2 - Authenticated Cross-Site Scripting

2018-01-16 00:00

Enguerran Gillier

Strategic Overview

Status

Patched in 3.7.25

Affected CoreWordPress 4.9

Affected Version3.6.1 – 4.9.1 · 14 branches

CVSS6.4Medium

CVECVE-2018-5776

View all WordPress 4.9 vulnerabilities

Vulnerability Overview

WordPress before 4.9.2 has XSS in the Flash fallback files in MediaElement (under wp-includes/js/mediaelement).

Technical Analysis

REMEDIATION: Update to one of the following versions, or a newer patched version: 3.7.25, 3.8.25, 3.9.23, 4.0.22, 4.1.22, 4.2.19, 4.3.15, 4.4.14, 4.5.13, 4.6.10, 4.7.9, 4.8.5, 4.9.2 --- 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-2018-5776 https://www.wordfence.com/threat-intel/vulnerabilities/id/01ebc1b1-2dd3-4e91-93b2-fc8e5e93e925

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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