Remote code execution in Microsoft Application Inspector

1) Input validation error

EUVDB-ID: #VU25970

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-0872

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists in Application Inspector when the tool reflects example code snippets from third-party source files into its HTML output. A remote attacker can trick a victim to run Application Inspector on source code that includes a malicious third-party component and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Application Inspector: 1.0.1 - 1.0.23

CPE2.3

• cpe:2.3:a:microsoft:application_inspector:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:application_inspector:1.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:application_inspector:1.0.3:*:*:*:*:*:*:*

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0872

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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