<p>An information disclosure vulnerability manifests when a user or an application uploads unprotected private key data as part of an authentication certificate <a href="https://docs.microsoft.com/en-us/graph/api/resources/keycredential?view=graph-rest-1.0">keyCredential</a> on an Azure AD <a href="https://docs.microsoft.com/en-us/azure/active-directory/develop/app-objects-and-service-principals">Application or Service Principal</a> (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.</p>
<p>Azure AD addressed this vulnerability by preventing disclosure of any private key values added to the application.</p>
<p>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.</p>
<p>For more details on this issue, please refer to the <a href="https://aka.ms/CVE-2021-42306-AAD">MSRC Blog Entry</a>.</p>
References
| Link | Resource |
|---|---|
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42306 | Patch Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
28 Dec 2023, 16:15
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : 4.0
v3 : 8.1 |
| Summary | (en) <p>An information disclosure vulnerability manifests when a user or an application uploads unprotected private key data as part of an authentication certificate <a href="https://docs.microsoft.com/en-us/graph/api/resources/keycredential?view=graph-rest-1.0">keyCredential</a> on an Azure AD <a href="https://docs.microsoft.com/en-us/azure/active-directory/develop/app-objects-and-service-principals">Application or Service Principal</a> (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.</p> <p>Azure AD addressed this vulnerability by preventing disclosure of any private key values added to the application.</p> <p>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.</p> <p>For more details on this issue, please refer to the <a href="https://aka.ms/CVE-2021-42306-AAD">MSRC Blog Entry</a>.</p> |
12 Jul 2022, 17:42
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-522 |
29 Nov 2021, 19:13
| Type | Values Removed | Values Added |
|---|---|---|
| References | (N/A) https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42306 - Patch, Vendor Advisory | |
| CWE | CWE-668 | |
| CVSS |
v2 : v3 : |
v2 : 4.0
v3 : 6.5 |
| CPE | cpe:2.3:a:microsoft:azure_migrate:*:*:*:*:*:*:*:* cpe:2.3:a:microsoft:azure_automation:*:*:*:*:*:*:*:* cpe:2.3:a:microsoft:azure_active_site_recovery:*:*:*:*:*:*:*:* cpe:2.3:a:microsoft:azure_active_directory:*:*:*:*:*:*:*:* |
24 Nov 2021, 04:50
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2021-11-24 01:15
Updated : 2023-12-28 16:15
NVD link : CVE-2021-42306
Mitre link : CVE-2021-42306
CVE.ORG link : CVE-2021-42306
JSON object : View
Products Affected
microsoft
- azure_automation
- azure_active_site_recovery
- azure_migrate
- azure_active_directory
CWE
CWE-522
Insufficiently Protected Credentials