Security features bypass in Microsoft Windows AppContainer Firewall Rules



Published: 2021-10-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-41338
CWE-ID CWE-254
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe
Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Security features bypass

EUVDB-ID: #VU57317

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41338

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a local user to bypass authentication process.

The vulnerability exists due to security feature bypass issue in Windows AppContainer Firewall Rules. A local user can gain access to encrypted data.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10, 10 20H2, 10 21H1, 10 1507, 10 1511, 10 1607, 10 1703, 10 1709, 10 1803, 10 1809, 10 1903, 10 1909, 10 2004, 10 Gold, 10 Mobile, 10 S, 11 21H2

Windows Server: 2016, 2019, 2019 20H2, 2019 1709, 2019 1803, 2019 1903, 2019 1909, 2019 2004

CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41338

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.



###SIDEBAR###