Vulnerability identifier: #VU46010

Vulnerability risk: Low

CVSSv3.1: 7.1 [CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Azure Sphere
Server applications / SCADA systems

Vendor: Microsoft

Description

The vulnerability allows a local attacker to escalate privileges on the system.

The vulnerability exists due to insufficient validation of user-supplied input in the "uid_map" functionality. A local attacker can ise a specially crafted uid_map file, cause multiple applications to get the same UID assigned and gain elevated privileges on the target system.

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-2020-1137

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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.