Vulnerability identifier: #VU63898

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-45341

CWE-ID: CWE-120

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
LibreCAD
Universal components / Libraries / Libraries used by multiple products

Vendor: LibreCad

Description

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

The vulnerability exists due to a boundary error in the CDataMoji of the jwwlib component. A remote attacker can trick the victim into opening a specially crafted JWW document, trigger heap buffer overflow, and execute arbitrary code on the target system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

LibreCAD: 1.0.0 rc1 - 2.2.0 rc3

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External links
http://github.com/LibreCAD/LibreCAD/issues/1462
http://github.com/LibreCAD/LibreCAD/commit/d9dcb27e47f9545cac3bccdca2d4f9c8754ff801

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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.