Description
Privilege escalation from Editor to Admin using Groups in Concrete CMS versions 8.5.6 and below. 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. Fixed by adding a check for group permissions before allowing a group to be moved. Concrete CMS Security team CVSS scoring: 7.1 AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:HCredit for discovery: "Adrian Tiron from FORTBRIDGE ( https://www.fortbridge.co.uk/ )"This fix is also in Concrete version 9.0.0
Published: 2021-11-19
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-2360 Privilege escalation from Editor to Admin using Groups in Concrete CMS versions 8.5.6 and below. 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. Fixed by adding a check for group permissions before allowing a group to be moved. Concrete CMS Security team CVSS scoring: 7.1 AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:HCredit for discovery: "Adrian Tiron from FORTBRIDGE ( https://www.fortbridge.co.uk/ )"This fix is also in Concrete version 9.0.0
Github GHSA Github GHSA GHSA-j4mv-2rv7-v2j9 Improper Privilege Management in Concrete CMS
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Concretecms Concrete Cms
cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2024-08-03T18:58:26.123Z

Reserved: 2021-01-06T00:00:00.000Z

Link: CVE-2021-22966

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-11-19T19:15:08.327

Modified: 2026-06-17T03:38:07.397

Link: CVE-2021-22966

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses