Code Injection in Azure Sphere - CVE-2021-27074
Published: March 9, 2021 / Updated: April 15, 2021
Vulnerability identifier: #VU51349
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-27074
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Azure Sphere
Azure Sphere
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation in Azure Sphere Unsigned within the Linux namespace ptrace functionality and the mount namespace functionality. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2021-27074
Install updates from vendor's website.