Advisory Details

December 17th, 2018

Adobe Reader DC Onix NextKey Integer Underflow Remote Code Execution Vulnerability

ZDI-18-1412
ZDI-CAN-7005

CVE ID CVE-2018-16009
CVSS SCORE 7.7, AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS Reader
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 specific flaw exists within the handling of the NextKey method. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before allocating a buffer. 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/apsb18-41.html
DISCLOSURE TIMELINE
  • 2018-07-30 - Vulnerability reported to vendor
  • 2018-12-17 - Coordinated public release of advisory
CREDIT Sebastian Apelt (@bitshifter123)
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