Vulnerability identifier: #VU63901

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-45343

CWE-ID: CWE-476

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 perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the HATCH handling of libdxfrw. A remote attacker can trick the victim into opening a specially crafted DXF document and perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

LibreCAD: 1.0.0 - 2.2.0 rc3

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External links
http://github.com/LibreCAD/LibreCAD/issues/1468
http://github.com/LibreCAD/LibreCAD/commit/29e85c5ff151018c6252afa104366e02c0da36e7

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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.