Multiple vulnerabilities in Microsoft Azure Sphere



Published: 2021-03-09
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-27080
CVE-2021-27074
CWE-ID CWE-94
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Azure Sphere
Server applications / SCADA systems

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Code Injection

EUVDB-ID: #VU51348

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-27080

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

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 mqueue inode initialization 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Azure Sphere: All versions

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27080
http://talosintelligence.com/vulnerability_reports/TALOS-2021-1250


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

2) Code Injection

EUVDB-ID: #VU51349

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-27074

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Azure Sphere: All versions

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27074
http://talosintelligence.com/vulnerability_reports/TALOS-2021-1249
http://talosintelligence.com/vulnerability_reports/TALOS-2021-1247


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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