WordPress Core < 4.2.1 - Cross-Site Scripting via Comments

2015-04-27 00:00

Jouko Pynnöne

Strategic Overview

Status

Patched in 4.0.4

Affected CoreWordPress 4.2

Affected Version4.0 – 4.2 · 3 branches

CVSS7.2High

CVECVE-2015-3440

View all WordPress 4.2 vulnerabilities

Vulnerability Overview

Cross-site scripting (XSS) vulnerability in wp-includes/wp-db.php in WordPress before 4.2.1 allows remote attackers to inject arbitrary web script or HTML via a long comment that is improperly stored because of limitations on the MySQL TEXT data type.

Technical Analysis

REMEDIATION: Update to one of the following versions, or a newer patched version: 4.0.4, 4.1.4, 4.2.1 --- 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-2015-3440 https://www.wordfence.com/threat-intel/vulnerabilities/id/cec5bfa6-96ed-4a5a-be19-63434af32c89

CVSS Vector

7.2

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

Base

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

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