Advisory Details

August 14th, 2023

Adobe Acrobat Reader DC Font Parsing Uninitialized Variable Remote Code Execution Vulnerability

ZDI-23-1075
ZDI-CAN-21063

CVE ID CVE-2023-38223
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 parsing of embedded fonts. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this vulnerability 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/apsb23-30.html
DISCLOSURE TIMELINE
  • 2023-05-24 - Vulnerability reported to vendor
  • 2023-08-14 - Coordinated public release of advisory
CREDIT Anonymous
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