PT-2021-22816 · Unknown · Concrete Cms

D0Bby + 3 · Published 2021-09-27 · Updated 2021-09-30 · CVE-2021-40108

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Concrete CMS versions prior to 8.5.6

Description The issue concerns a CSRF vulnerability in the Calendar component of Concrete CMS. Specifically, the ccm token is not verified on the "ccm/calendar/dialogs/event/add/save" endpoint, making it susceptible to cross-site request forgery attacks.

Recommendations For versions prior to 8.5.6, update to version 8.5.6 or later to resolve the issue. As a temporary workaround, consider restricting access to the "ccm/calendar/dialogs/event/add/save" endpoint until a patch is available.

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2021-40108

Affected Products

Concrete Cms

References · 5

• https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-40108 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-40108 · Security Note
• https://hackerone.com/reports/1102018 · Note
• https://t.me/cibsecurity/29452 · Telegram Post