CVE-2021-42306
Azure Active Directory Information Disclosure Vulnerability
At a glance
- Source
- NVD
- EPSS
- EPSS 3.27 % · percentile 88 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Modified
Description
An information disclosure vulnerability manifests when a user or an application uploads unprotected private key data as part of an authentication certificate keyCredential on an Azure AD Application or Service Principal (which is not recommended). This vulnerability allows a user or service in the tenant with application read access to read the private key data that was added to the application. Azure AD addressed this vulnerability by preventing disclosure of any private key values added to the application. Microsoft has identified services that could manifest this vulnerability, and steps that customers should take to be protected. Refer to the FAQ section for more information. For more details on this issue, please refer to the MSRC Blog Entry.
Weaknesses (CWE)
- CWE-522 — Insufficiently Protected Credentials
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C | microsoft |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | NVD · secure@microsoft.com (Secondary) |
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | NVD · nvd@nist.gov (Secondary) |
| CVSS 2.0 | MEDIUM 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-29281
- GCVE · GCVE-0-2021-42306
CERT-FR advisories
- CERTFR-2021-AVI-884 — Vulnérabilité dans Microsoft Azure Active Directory · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:microsoft:azure_active_directory:*:*:*:*:*:*:*:*< 2021-10-30cpe:2.3:a:microsoft:azure_active_site_recovery:*:*:*:*:*:*:*:*< 2021-11-01cpe:2.3:a:microsoft:azure_automation:*:*:*:*:*:*:*:*< 2021-10-15cpe:2.3:a:microsoft:azure_migrate:*:*:*:*:*:*:*:*< 2021-11-02
Affected products
| Product | Versions |
|---|---|
| Microsoft · Azure Active Directory | affected - |
| Microsoft · Azure Automation | affected 1.0.0 < publication |
| Microsoft · Azure Migrate | affected - |
| Microsoft · Azure Site Recovery | affected - |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |