Vulnerability identifier: #VU47395

Vulnerability risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-682

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Azure Sphere
Server applications / SCADA systems

Vendor: Microsoft

Description

The vulnerability allows a local attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect calculation issue in the Littlefs Quota functionality. A local user can cause a quota bypass and reboot, resulting in denial of service condition. 

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Azure Sphere: 20.06

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External links
http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1129

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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.