Remote code execution in Microsoft .NET

1) Insecure DLL loading

EUVDB-ID: #VU74917

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-2023-28260

CWE-ID: CWE-427 - Uncontrolled Search Path Element

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to the application loads DLL libraries in an insecure manner. A remote attacker can place a specially crafted .dll file on a remote SMB fileshare, trick the victim into opening a file, associated with the vulnerable application, and execute arbitrary code on victim's system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Visual Studio: 17.0.0 17.0.31903.59 - 17.5.0 17.5.33414.496

PowerShell: 7.2.0 - 7.3.3

.NET: 6.0.1 - 7.0.4

CPE2.3

• cpe:2.3:a:microsoft:visual_studio:17.0.0:17.0.31903.59:*:*:*:*:*:
• cpe:2.3:a:microsoft:visual_studio:17.2.0:17.2.32505.173:*:*:*:*:*:
• cpe:2.3:a:microsoft:visual_studio:17.4.0:17.4.33103.184:*:*:*:*:*:
• cpe:2.3:a:microsoft:visual_studio:17.5.0:17.5.33414.496:*:*:*:*:*:
• cpe:2.3:a:microsoft:powershell:7.2.10:*:*:*:*:*:*:
• cpe:2.3:a:microsoft:powershell:7.3.3:*:*:*:*:*:*:
• cpe:2.3:a:microsoft:.net:6.0.15:*:*:*:*:*:*:
• cpe:2.3:a:microsoft:.net:7.0.4:*:*:*:*:*:*:

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-28260

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.