#VU58336 Information disclosure in Microsoft products - CVE-2021-42306

Vulnerability identifier: #VU58336

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-42306

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Azure Migrate
Client/Desktop applications / Other client software
Azure Site Recovery
Client/Desktop applications / Other client software
Azure Active Directory
Client/Desktop applications / Other client software
Azure Automation
Client/Desktop applications / Other client software

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in Azure Active Directory. A remote authenticated attacker can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Azure Migrate: All versions

Azure Site Recovery: All versions

Azure Active Directory: All versions

Azure Automation: All versions

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42306

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.