WordPress Popular Posts <= 5.3.2 - Authenticated Arbitrary File Upload

2021-11-12 00:00

Jerome Bruandet

Strategic Overview

Status

Patched in 5.3.3

Affected PluginWP Popular Posts

Affected Version<= 5.3.2

CVSS8.8High

CVECVE-2021-42362

Vulnerability Overview

The WordPress Popular Posts WordPress plugin is vulnerable to arbitrary file uploads due to insufficient input file type validation found in the ~/src/Image.php file which makes it possible for attackers with contributor level access and above to upload malicious files that can be used to obtain remote code execution, in versions up to and including 5.3.2.

Technical Analysis

REMEDIATION: Update to version 5.3.3, or a newer patched version --- IDENTIFIER: CWE-434 (Unrestricted Upload of File with Dangerous Type) The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

External References

https://www.cve.org/CVERecord?id=CVE-2021-42362 https://www.wordfence.com/threat-intel/vulnerabilities/id/cb37b784-b1ff-4cee-889d-751218e5b95d

CVSS Vector

8.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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