Out-of-bounds write in Autodesk AutoCAD - CVE-2021-27043

Vulnerability identifier: #VU54379

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-27043

CWE-ID: CWE-787

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing DWG and PDF files. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Autodesk AutoCAD
AutoCAD Plant 3D
Autodesk Civil 3D
AutoCAD Architecture
AutoCAD LT
AutoCAD Electrical
AutoCAD Map 3D
AutoCAD Mechanical
AutoCAD MEP
Advance Steel
DWG Trueview
AutoCAD for Mac
AutoCAD for Mac LT
Autodesk Infraworks

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Autodesk AutoCAD - addressed in versions 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1, 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2
AutoCAD Plant 3D - addressed in versions 2019.1.3, 2019.1.4, 2020.1.4, 2020.1.5, 2021.1.1, 2021.1.2, 2022.0.1, 2022.1.2
Autodesk Civil 3D - addressed in versions 2019.1.3, 2019.1.4, 2020.1.4, 2020.1.5, 2021.1.1, 2021.1.2, 2022.0.1, 2022.1.2
AutoCAD Architecture - addressed in versions 2019.1.3, 2019.1.4, 2020.1.4, 2020.1.5, 2021.1.1, 2021.1.2, 2022.0.1, 2022.1.2
AutoCAD LT - addressed in versions 2019.1.3, 2019.1.4, 2020.1.4, 2020.1.5, 2021.1.1, 2021.1.2, 2022.0.1, 2022.1.2
AutoCAD Electrical - addressed in versions 2019.1.3, 2019.1.4, 2020.1.4, 2020.1.5, 2021.1.1, 2021.1.2, 2022.0.1, 2022.1.2
AutoCAD Map 3D - addressed in versions 2019.1.3, 2019.1.4, 2020.1.4, 2020.1.5, 2021.1.1, 2021.1.2, 2022.0.1, 2022.1.2
AutoCAD Mechanical - addressed in versions 2019.1.3, 2019.1.4, 2020.1.4, 2020.1.5, 2021.1.1, 2021.1.2, 2022.0.1, 2022.1.2
AutoCAD MEP - addressed in versions 2019.1.3, 2019.1.4, 2020.1.4, 2020.1.5, 2021.1.1, 2021.1.2, 2022.0.1, 2022.1.2
Advance Steel - addressed in versions 2019.1.3, 2019.1.4, 2020.1.4, 2020.1.5, 2021.1.1, 2021.1.2, 2022.0.1, 2022.1.2
DWG Trueview - addressed in versions 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2
AutoCAD for Mac - addressed in versions 2020.3.2, 2021.2.2, 2022.2.2
AutoCAD for Mac LT - addressed in versions 2020.3.2, 2021.2.2, 2022.2.2
Autodesk Infraworks - addressed in versions 2020.2 Hotfix 6, 2021.2 Hotfix 6, 2022.1 Hotfix 4

• https://www.autodesk.com/trust/security-advisories/adsk-sa-2021-0004
• https://fortiguard.com/zeroday/FG-VD-20-133
• https://www.zerodayinitiative.com/advisories/ZDI-22-470/

• Multiple vulnerabilities in AutoCAD
• Multiple vulnerabilities in Autodesk Advance Steel
• Multiple vulnerabilities in AutoCAD Architecture
• Multiple vulnerabilities in AutoCAD Electrical
• Multiple vulnerabilities in AutoCAD Map 3D
• Multiple vulnerabilities in AutoCAD Mechanical
• Multiple vulnerabilities in AutoCAD MEP
• Multiple vulnerabilities in AutoCAD Plant 3D
• Multiple vulnerabilities in AutoCAD LT
• Multiple vulnerabilities in Autodesk Civil 3D
• Multiple vulnerabilities in Autodesk AutoCAD products
• Multiple vulnerabilities in Autodesk InfraWorks