WordPress Core < 4.7.3 - Cross-Site Request Forgery via Press This

2017-03-06 00:00

Sipke Mellema

Strategic Overview

Status

Patched in 3.7.19

Affected CoreWordPress 4.7

Affected Version3.7 – 4.7.2 · 12 branches

CVSS8.8High

CVECVE-2017-6819

View all WordPress 4.7 vulnerabilities

Vulnerability Overview

In WordPress before 4.7.3, there is cross-site request forgery (CSRF) in Press This (wp-admin/includes/class-wp-press-this.php), leading to excessive use of server resources. The CSRF can trigger an outbound HTTP request for a large file that is then parsed by Press This.

Technical Analysis

REMEDIATION: Update to one of the following versions, or a newer patched version: 3.7.19, 3.8.19, 3.9.17, 4.0.16, 4.1.16, 4.2.13, 4.3.9, 4.4.8, 4.5.7, 4.6.4, 4.7.3 --- IDENTIFIER: CWE-352 (Cross-Site Request Forgery (CSRF)) The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

External References

https://www.cve.org/CVERecord?id=CVE-2017-6819 https://www.wordfence.com/threat-intel/vulnerabilities/id/578a908a-d447-4b3e-b5d1-be86363c982a

CVSS Vector

8.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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