Advisory Details

June 10th, 2021

Adobe Acrobat Reader DC Path Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability

ZDI-21-659
ZDI-CAN-13168

CVE ID CVE-2021-28554
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 Acrobat Reader DC
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Adobe Acrobat Reader DC. 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 handling of relative paths. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to execute code in the context of the current process.

ADDITIONAL DETAILS Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/acrobat/apsb21-37.html
DISCLOSURE TIMELINE
  • 2021-03-24 - Vulnerability reported to vendor
  • 2021-06-10 - Coordinated public release of advisory
CREDIT Mark Vincent Yason (@MarkYason)
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