classyfrieds <= 3.8 - Arbitrary File Upload

2021-04-10 00:00

Jin Huang

Strategic Overview

Status

Unpatched

Affected Pluginclassyfrieds

Affected Version<= 3.8

CVSS8.8High

CVECVE-2021-24253

View all classyfrieds vulnerabilities

Vulnerability Overview

The classyfrieds WordPress plugin through 3.8 does not properly check the uploaded file when an authenticated user adds a listing, only checking the content-type in the request. This allows any authenticated user to upload arbitrary PHP files via the Add Listing feature of the plugin, leading to RCE.

Technical Analysis

REMEDIATION: No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement. --- 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-2021-24253 https://www.wordfence.com/threat-intel/vulnerabilities/id/8185c7a4-3d8e-4a24-9746-536337afbcfe

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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