Remote code execution in WECON LeviStudioU

Published: 2021-12-10 | Updated: 2022-01-17

Risk	High
Patch available	NO
Number of vulnerabilities	1
CVE-ID	CVE-2021-43983
CWE-ID	CWE-121
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	WECON LeviStudioU Client/Desktop applications / Office applications
Vendor	WECON Technology Co., Ltd.

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Stack-based buffer overflow

EUVDB-ID: #VU58815

Risk: High

CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-43983

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error while parsing project files. A remote unauthenticated attacker can trick the victim to open a specially crafted UMP file, trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

WECON LeviStudioU: 2019-09-21

External links

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 trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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