Affected: LibreCAD

A code execution vulnerability exists in the dwgCompressor::copyCompBytes21 functionality of LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Affected: Ubuntu:Pro:16.04:LTS: librecad, Ubuntu:Pro:18.04:LTS: librecad, Ubuntu:20.04:LTS: librecad

Cody Sixteen discovered that LibreCAD incorrectly handled memory when parsing DXF files. An attacker could use this issue to cause LibreCAD to crash, leading to a denial of service. This issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2018-19105)

Lilith of Cisco Talos discovered that LibreCAD incorrectly handled memory when parsing DWG files. An attacker could use this issue to cause LibreCAD to crash, leading to a denial of service, or possibly execute arbitrary code. (CVE-2021-21898, CVE-2021-21899)

Lilith of Cisco Talos discovered that LibreCAD incorrectly handled memory when parsing DRW files. An attacker could use this issue to cause LibreCAD to crash, leading to a denial of service, or possibly execute arbitrary code. (CVE-2021-21900)

Albin Eldstål-Ahrens discovered that LibreCAD incorrectly handled memory when parsing JWW files. An attacker could use this issue to cause LibreCAD to crash, leading to a denial of service, or possibly execute arbitrary code. (CVE-2021-45341, CVE-2021-45342)

Albin Eldstål-Ahrens discovered that LibreCAD incorrectly handled memory when parsing DXF files. An attacker could use this issue to cause LibreCAD to crash, leading to a denial of service. (CVE-2021-45343)