Email Artillery (MASS EMAIL) <= 4.1 - Arbitrary File Upload

2021-08-16 00:00

Jin Huang

Strategic Overview

Status

Unpatched

Affected PluginEmail Artillery (MASS EMAIL)

Affected Version<= 4.1

CVSS7.2High

CVECVE-2021-24490

View all Email Artillery (MASS EMAIL) vulnerabilities

Vulnerability Overview

The Email Artillery (MASS EMAIL) WordPress plugin through 4.1 does not properly check the uploaded files from the Import Emails feature, allowing arbitrary files to be uploaded. Furthermore, the plugin is also lacking any CSRF check, allowing such issue to be exploited via a CSRF attack as well. However, due to the presence of a .htaccess, denying access to everything in the folder the file is uploaded to, the malicious uploaded file will only be accessible on Web Servers such as Nginx/IIS

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-2021-24490 https://www.wordfence.com/threat-intel/vulnerabilities/id/1cbb309c-015b-4bdb-917a-a67e028484e6

CVSS Vector

7.2

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

Base

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

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