Vulnerability identifier: #VU47396

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-284

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Azure Sphere
Server applications / SCADA systems

Vendor: Microsoft

Description

The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the normal world’s signed code execution functionality. A local user can send a specially crafted AF_PACKET socket and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Azure Sphere: 20.07

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External links
http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1134

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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