Advisory Details

August 19th, 2019

Adobe Acrobat Reader DC XFA ready Event Use-After-Free Remote Code Execution Vulnerability

ZDI-19-746
ZDI-CAN-8546

CVE ID CVE-2019-8034
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 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 the ready event within XFA forms. The issue results from the lack of validating the existence of an object prior to performing operations on the object. 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/apsb19-41.html
DISCLOSURE TIMELINE
  • 2019-06-04 - Vulnerability reported to vendor
  • 2019-08-19 - Coordinated public release of advisory
CREDIT peternguyen
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