Advisory Details

May 13th, 2021

Adobe InCopy DOCX File Parsing Directory Traversal Remote Code Execution Vulnerability

ZDI-21-585
ZDI-CAN-12752

CVE ID CVE-2021-21090
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS InCopy
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Adobe InCopy. 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 conversion of DOCX files. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the current user.

ADDITIONAL DETAILS Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/incopy/apsb21-25.html
DISCLOSURE TIMELINE
  • 2020-12-18 - Vulnerability reported to vendor
  • 2021-05-13 - Coordinated public release of advisory
CREDIT rgod
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