CVE Vulnerability

CVE-2021-40109

A SSRF issue was discovered in Concrete CMS through 8.5.5. Users can access forbidden files on their local network. A user with permissions to upload files from external sites can upload a URL that redirects to an internal resource of any file type. The redirect is followed and loads the contents of the file from the redirected-to server. Files of disallowed types can be uploaded.

5.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

Scope

6.4 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.1 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://hackerone.com/reports/1102105 Permissions Required
https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes Release Notes Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*
Information

Published : 2021-09-27 01:15

Updated : 2021-09-30 03:32

NVD link : CVE-2021-40109

Mitre link : CVE-2021-40109

Products Affected
No products.
CWE
CWE-918

Server-Side Request Forgery (SSRF)