Advisory Details

June 3rd, 2016

Adobe Flash TextBlock releaseLineCreationData Use-After-Free Remote Code Execution Vulnerability

ZDI-15-666
ZDI-CAN-3450

CVE ID CVE-2015-8416
CVSS SCORE 6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS Flash
VULNERABILITY DETAILS


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Adobe Flash. 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 TextBlock object. By calling the releaseLineCreationData method of a TextBlock object, an attacker can force a dangling pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute arbitrary 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/flash-player/apsb15-32.html
DISCLOSURE TIMELINE
  • 2015-12-07 - Vulnerability reported to vendor
  • 2016-06-03 - Coordinated public release of advisory
CREDIT Anonymous
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