Information disclosure in Microsoft Azure Virtual Machine

1) Information disclosure

EUVDB-ID: #VU51350

Risk: Low

CVSSv4.0: 5.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-27075

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

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 Virtual Machine. A remote authenticated attacker on the local network can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Azure Kubernetes Service: All versions

Azure Container Instance: All versions

Azure Spring Cloud: All versions

Azure Service Fabric: All versions

CPE2.3

• cpe:2.3:a:microsoft:microsoft_azure_kubernetes_service:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:azure_container_instance:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:azure_spring_cloud:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:azure_service_fabric:*:*:*:*:*:*:*:*

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27075

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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