Multiple vulnerabilities in Autodesk Revit PDFTron component



| Updated: 2022-03-08
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-40160
CVE-2021-40161
CWE-ID CWE-125
CWE-427
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Revit
Client/Desktop applications / Multimedia software

Vendor Autodesk

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU58751

Risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-40160

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the PDFTron component when parsing PDF files. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Revit: 2020.0 - 2022.0

CPE2.3 External links

https://www.autodesk.com/trust/security-advisories/adsk-sa-2021-0010
https://www.zerodayinitiative.com/advisories/ZDI-22-474/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Insecure DLL loading

EUVDB-ID: #VU58752

Risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-40161

CWE-ID: CWE-427 - Uncontrolled Search Path Element

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to the PDFTron component loads DLL libraries in an insecure manner. A remote attacker can place a specially crafted .dll file on a remote SMB fileshare, trick the victim into opening a PDF file from a remote location and execute arbitrary code on victim's system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Revit: 2020.0 - 2022.0

CPE2.3 External links

https://www.autodesk.com/trust/security-advisories/adsk-sa-2021-0010


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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