PT-2021-15301 · Unknown · Concrete Cms

Adrian Tiron · Published 2021-11-19 · Updated 2022-07-12 · CVE-2021-22966

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

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

Description The issue allows privilege escalation from Editor to Admin using Groups in Concrete CMS. If a group is granted "view" permissions on the bulkupdate page, then users in that group can escalate to being an administrator with a specially crafted curl. The fix involves adding a check for group permissions before allowing a group to be moved.

Recommendations For Concrete CMS versions 8.5.6 and below, update to Concrete CMS version 9.0.0 to resolve the issue. As a temporary workaround, consider restricting "view" permissions on the bulkupdate page to prevent potential escalation.

Fix

Incorrect Authorization

Improper Privilege Management

Weakness Enumeration

CWE-863

CWE-269

Related Identifiers

CVE-2021-22966

GHSA-J4MV-2RV7-V2J9

Affected Products

Concrete Cms

References · 7

• https://osv.dev/vulnerability/CVE-2021-22966 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-j4mv-2rv7-v2j9 · Vendor Advisory
• https://documentation.concretecms.org/developers/introduction/version-history/857-release-notes · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-22966 · Security Note
• https://t.me/cvenotify/23662 · Telegram Post
• https://t.me/cibsecurity/32746 · Telegram Post
• https://hackerone.com/reports/1362747 · Note