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CVE-2021-42306

CVE information

Published

2 years ago

Last Modified

3 months ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

High

Impact Analysis

Description

<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> .

CVSSv2.0 Score

Severity
Medium
Base Score
4/10
Exploit Score
8/10
Access Vector
Network
Access Complexity
Low
Authentication Required
Single
Impact Score
2.9/10
Confidentiality Impact
Partial
Availability Impact
None
Integrity Impact
None

CVSSv3.1 Score

Severity
High
Base Score
8.1/10
Exploit Score
2.8/10
Access Vector
Network
Access Complexity
Low
Privileges Required
Low
Impact Score
5.2/10
Confidentiality Impact
High
Availability Impact
None
Integrity Impact
High
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:a:microsoft:azure_migrate:*:*:*:*:*:*:*:*
  Yes
- 2021-11-02
cpe:2.3:a:microsoft:azure_active_site_recovery:*:*:*:*:*:*:*
  Yes
- 2021-11-01
cpe:2.3:a:microsoft:azure_automation:*:*:*:*:*:*:*:*
  Yes
- 2021-10-15
cpe:2.3:a:microsoft:azure_active_directory:*:*:*:*:*:*:*:*
  Yes
- 2021-10-30