Spoofing attack in Azure IoT SDK

1) Improper certificate validation

EUVDB-ID: #VU12494

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8119

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to improper certificate validation over the AMQP protocol in the Azure IoT Device Provisioning AMQP Transport library. A remote attacker can perform a man-in-the-middle (MitM) attack during provisioning process.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

C# SDK for Azure IoT: All versions

C SDK for Azure IoT: All versions

Java SDK for Azure IoT: All versions

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8119

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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