Advisory Details

March 11th, 2022

Autodesk AutoCAD PCX File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-22-505
ZDI-CAN-15564

CVE ID CVE-2021-27039
CVSS SCORE 7.8, (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Autodesk
AFFECTED PRODUCTS AutoCAD
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Autodesk AutoCAD. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of PCX images. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS Autodesk has issued an update to correct this vulnerability. More details can be found at:
https://www.autodesk.com/trust/security-advisories/adsk-sa-2022-0004
DISCLOSURE TIMELINE
  • 2021-10-21 - Vulnerability reported to vendor
  • 2022-03-11 - Coordinated public release of advisory
CREDIT Mat Powell of Trend Micro Zero Day Initiative
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