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CVE-2021-21899

Published: 19 November 2021

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.

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
librecad
Launchpad, Ubuntu, Debian
bionic
Released (2.1.2-1ubuntu0.1)
focal
Released (2.1.3-1.2+deb10u1build0.20.04.1)
hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy
Released (2.1.3-2)
kinetic Not vulnerable
(2.1.3-2)
trusty Ignored
(out of standard support)
upstream Needs triage

xenial
Released (2.0.9-2ubuntu0.1~esm1)
Patches:
upstream: https://github.com/LibreCAD/libdxfrw/commit/6417118874333309aa10c4e59f954c3905a6e8b5

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H