PT-2022-12328 · Libdxfrw+4 · Libdxfrw+4

Eldstal · Published 2022-01-25 · Updated 2025-02-03 · CVE-2021-45343

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions LibreCAD version 2.2.0

Description A NULL pointer dereference in the HATCH handling of libdxfrw allows an attacker to crash the application using a crafted DXF document.

Recommendations For LibreCAD version 2.2.0, consider updating to a newer version that addresses this issue, as no specific fix is provided for this version. As a temporary workaround, avoid using crafted DXF documents that could trigger the NULL pointer dereference in the HATCH handling of libdxfrw.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2024-6623

ALT-PU-2025-2220

CVE-2021-45343

DLA-2908-1

DSA-5077-1

MGASA-2022-0151

USN-5957-1

Affected Products

Alt Linux

Librecad

Linuxmint

Ubuntu

Libdxfrw

References · 32

• 🔥 https://github.com/LibreCAD/LibreCAD/issues/1468 · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-45343 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-21899 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/VUMH3CWGVSMR2UIZEA35Q5UB7PDVVVYS · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUMH3CWGVSMR2UIZEA35Q5UB7PDVVVYS · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-45343 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2022-0151 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-45341 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/RDI3HCTCACMIC7I4ILB3NRU6DCMADI5H · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCC2FZ6HZOIK3775K4MTCOUHX6PLGPEL · Vendor Advisory
• https://advisories.mageia.org/MGASA-2022-0151.html · Security Note
• https://ubuntu.com/security/CVE-2021-21900 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-45343 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5957-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-45343 · Security Note