Advisory Details

October 13th, 2015

Adobe Acrobat Reader DC Fields Format Action Use-After-Free Remote Code Execution Vulnerability

ZDI-15-467
ZDI-CAN-2816

CVE ID CVE-2015-6685
CVSS SCORE 6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS Acrobat Reader DC
VULNERABILITY DETAILS


This vulnerability allows remote attackers to execute arbitrary code on vulnerable 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 flaw exists within the handling of fields. A specially crafted PDF with specific fields with the Format action can force a dangling pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under 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/apsb15-24.html
DISCLOSURE TIMELINE
  • 2015-05-21 - Vulnerability reported to vendor
  • 2015-10-13 - Coordinated public release of advisory
CREDIT AbdulAziz Hariri - HP Zero Day Initiative
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