Security restrictions bypass in Microsoft Defender



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-24934
CWE-ID CWE-254
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Microsoft Malware Protection Engine
Client/Desktop applications / Antivirus software/Personal firewalls

Windows Defender
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor Microsoft

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Security features bypass

EUVDB-ID: #VU75143

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-24934

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass malware detection mechanism.

The vulnerability exists due to an unspecified error in Microsoft malware protection engine. A remote attacker can trick the victim to download a malicious file that bypasses the Windows Defender detection.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Malware Protection Engine: before 1.1.20200.4

Windows Defender: before 1.387.1114.0

CPE2.3 External links

http://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24934


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.



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