CVE-2021-22969
mediumPriorität · verfolgen · 21EPSS 0.009 · 58. PerzentilEUUSEPSS · bewertet 2026-10-28
Concrete CMS (formerly concrete5) versions below 8.5.7 has a SSRF mitigation bypass using DNS Rebind attack giving an attacker the ability to fetch cloud IAAS (ex AWS) IAM keys.To fix this Concrete CMS no longer allows downloads from the local network and specifies the validated IP when downloading rather than relying on DNS.Discoverer: Adrian Tiron from FORTBRIDGE ( https://www.fortbridge.co.uk/ )The Concrete CMS team gave this a CVSS 3.1 score of 3.5 AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N . Please note that Cloud IAAS provider mis-configurations are not Concrete CMS vulnerabilities. A mitigation for this vulnerability is to make sure that the IMDS configurations are according to a cloud provider's best practices.This fix is also in Concrete version 9.0.0
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (3)
Betroffene Produkte und Versionsbereiche.
- n/a https://github.com/concrete5/concrete5≤ Affected version Concrete CMS (concrete5) 8.5.6 and below. Fixed in Concrete CMS version 8.5.7 and 9.0.0enisa_euvdEU
Advisories (1)
Hersteller- und Ökosystem-Meldungen dazu.
- GHSA-mcxr-fx5f-96qqServer-Side Request Forgery in Concrete CMS2021-11-23ghsa · osvUS
Concrete CMS (formerly concrete5) versions below 8.5.7 has a SSRF mitigation bypass using DNS Rebind attack giving an attacker the ability to fetch cloud IAAS (ex AWS) IAM keys.To fix this Concrete CMS no longer allows downloads from the local network and specifies the validated IP when downloading rather than relying on DNS.Discoverer.
auch bekannt als (3)
Weitere Namen und Kennungen dieser Entität.
quellen
Welche Quellen diesen Datensatz belegen und wann.
Referenzen (8)
Externe Belege — Patches, Meldungen, Analysen.
- https://documentation.concretecms.org/developers/introduction/version-history/857-release-notescnnvd
- https://hackerone.com/reports/1350444Patchcnnvd
- https://hackerone.com/reports/1369312cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-22969cnnvd
- https://documentation.concretecms.org/developers/introduction/version-history/857-release-notesenisa_euvd
- https://hackerone.com/reports/1369312enisa_euvd
- https://documentation.concretecms.org/developers/introduction/version-history/857-release-notesRelease NotesVendor Advisorynvd
- https://hackerone.com/reports/1369312Permissions Requirednvd
Angreifer nutzen Schwachstellen wie diese gegen im Internet exponierte Dienste aus. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.
Kostenloser Scan