Vulnerability · Published Nov 24, 2021 · Assigned by microsoft
CVE-2021-42306Azure Active Directory Information Disclosure Vulnerability
High 8.1
In plain English
A high-severity security flaw in Azure Active Directory from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.3% (higher than 88% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Azure Active Directory | - |
| Microsoft | Azure Automation | 1.0.0 – before publication |
| Microsoft | Azure Migrate | - |
| Microsoft | Azure Site Recovery | - |
References
- Azure Active Directory Information Disclosure Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42306 x_refsource_MISC, x_transferred