WordPress Core < 5.8 - Dependency Confusion

2021-11-25 00:00

Kamil Vavra

Strategic Overview

Status

Patched in 5.8

Affected CoreWordPress 5.7

Affected Version<= 5.7.5

CVSS8.1High

CVECVE-2021-44223

View all WordPress 5.7 vulnerabilities

Vulnerability Overview

WordPress before 5.8 lacks support for the Update URI plugin header. This makes it easier for remote attackers to execute arbitrary code via a supply-chain attack against WordPress installations that use any plugin for which the slug satisfies the naming constraints of the WordPress.org Plugin Directory but is not yet present in that directory.

Technical Analysis

REMEDIATION: Update to version 5.8, or a newer patched version --- IDENTIFIER: CWE-345 (Insufficient Verification of Data Authenticity) The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

External References

https://www.cve.org/CVERecord?id=CVE-2021-44223 https://www.wordfence.com/threat-intel/vulnerabilities/id/719fe585-369b-47ef-b3c1-15729f88ae2d

CVSS Vector

8.1

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

Base

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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