Improper access control in Azure Sphere - #VU46012
Published: August 25, 2020
Vulnerability identifier: #VU46012
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: N/A
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Azure Sphere
Azure Sphere
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a local attacker 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 attacker can use a specially crafted shellcode that sets the "READ_IMPLIES_EXEC" personality and execute arbtrary code on the target system.
Remediation
Install updates from vendor's website.