What is CVE-2021-22967?

CVE-2021-22967 is a high-severity vulnerability in Concretecms Concrete Cms, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2021-11-19.

How severe is CVE-2021-22967?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Concretecms Concrete Cms

CVE-2021-22967

In Concrete CMS (formerly concrete 5) below 8.5.7, IDOR Allows Unauthenticated User to Access Restricted Files If Allowed to Add Message to a Conversation.To remediate this, a check was added to verify a user has permissions to view files before attaching the files to a message in "add / edit message”.Concrete CMS security team gave this a CVSS v3.1 score of 4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NCredit for discovery Adrian H

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.011 (62.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Concretecms Concrete_cms
N/a Https://github.com/concrete5/concrete5 — versions Affected version - Concrete 8.5.6 and below. Fixed version 9.0 and 8.5.7

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

support@hackerone.com (x_refsource_MISC, Release Notes, Vendor Advisory)
support@hackerone.com (Permissions Required, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-22967?: CVE-2021-22967 is a high-severity vulnerability in Concretecms Concrete Cms, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2021-11-19.
How severe is CVE-2021-22967?: High severity. CVSS v3 base score is 7.5 out of 10.