WordPress Core < 4.8.2 - Cross-Site Scripting via Shortcodes

2017-09-19 00:00

Rodolfo Assis (@brutelogic)

Strategic Overview

Status

Patched in 3.7.22

Affected CoreWordPress 4.8

Affected Version3.7 – 4.8.1 · 13 branches

CVSS6.4Medium

CVECVE-2017-14726

View all WordPress 4.8 vulnerabilities

Vulnerability Overview

Before version 4.8.2, WordPress was vulnerable to a cross-site scripting attack via shortcodes in the TinyMCE visual editor.

Technical Analysis

REMEDIATION: Update to one of the following versions, or a newer patched version: 3.7.22, 3.8.22, 3.9.20, 4.0.19, 4.1.19, 4.2.16, 4.3.12, 4.4.11, 4.5.10, 4.6.7, 4.7.6, 4.8.2 --- 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-2017-14726 https://www.wordfence.com/threat-intel/vulnerabilities/id/b6066883-20e0-440d-9a96-7f4b06c670d2

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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