CVE-2021-22969

Concrete CMS (formerly concrete5) versions below 8.5.7 has a SSRF mitigation bypass using DNS Rebind attack giving an attacker the ability to fetch cloud IAAS (ex AWS) IAM keys.To fix this Concrete CMS no longer allows downloads from the local network and specifies the validated IP when downloading rather than relying on DNS.Discoverer: Adrian Tiron from FORTBRIDGE ( https://www.fortbridge.co.uk/ )The Concrete CMS team gave this a CVSS 3.1 score of 3.5 AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N . Please note that Cloud IAAS provider mis-configurations are not Concrete CMS vulnerabilities. A mitigation for this vulnerability is to make sure that the IMDS configurations are according to a cloud provider's best practices.This fix is also in Concrete version 9.0.0
Configurations

Configuration 1 (hide)

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

History

21 Nov 2024, 05:51

Type Values Removed Values Added
References () https://documentation.concretecms.org/developers/introduction/version-history/857-release-notes - Release Notes, Vendor Advisory () https://documentation.concretecms.org/developers/introduction/version-history/857-release-notes - Release Notes, Vendor Advisory
References () https://hackerone.com/reports/1369312 - Permissions Required () https://hackerone.com/reports/1369312 - Permissions Required

23 Nov 2021, 13:35

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : 5.0
v3 : 5.3
CPE cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*
CWE CWE-918
References (MISC) https://documentation.concretecms.org/developers/introduction/version-history/857-release-notes - (MISC) https://documentation.concretecms.org/developers/introduction/version-history/857-release-notes - Release Notes, Vendor Advisory
References (MISC) https://hackerone.com/reports/1369312 - (MISC) https://hackerone.com/reports/1369312 - Permissions Required

19 Nov 2021, 19:15

Type Values Removed Values Added
New CVE

Information

Published : 2021-11-19 19:15

Updated : 2024-11-21 05:51


NVD link : CVE-2021-22969

Mitre link : CVE-2021-22969

CVE.ORG link : CVE-2021-22969


JSON object : View

Products Affected

concretecms

  • concrete_cms
CWE
CWE-918

Server-Side Request Forgery (SSRF)