CVE-2021-40099

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

An issue was discovered in Concrete CMS through 8.5.5. Fetching the update json scheme over HTTP leads to remote code execution.

References

https://hackerone.com/reports/982130

https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes

Details

Source: MITRE

Published: 2021-09-24

Updated: 2021-09-30

Risk Information

CVSS v2

Base Score: 6.5

Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 8

Severity: MEDIUM

CVSS v3

Base Score: 7.2

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

Impact Score: 5.9

Exploitability Score: 1.2

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* versions up to 8.5.5 (inclusive)