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CVE-2021-21898

Published: 19 November 2021

A code execution vulnerability exists in the dwgCompressor::decompress18() functionality of LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to an out-of-bounds write. 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
hirsute Ignored
(end of life)
impish Ignored
(end of life)
trusty Ignored
(end of standard support)
xenial
Released (2.0.9-2ubuntu0.1~esm1)
Available with Ubuntu Pro
upstream Needs triage

bionic
Released (2.1.2-1ubuntu0.1)
focal
Released (2.1.3-1.2+deb10u1build0.20.04.1)
jammy
Released (2.1.3-3)
kinetic
Released (2.1.3-3)
lunar Ignored
(end of life, was needs-triage)
mantic Needs triage

Patches:
upstream: https://github.com/LibreCAD/libdxfrw/commit/ba3fa95648bef948e008dfbdd31a4d21badd71f0

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