Advisory Details

May 27th, 2016

(Pwn2Own) Apple OS X libATSServer Heap-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2016-1796
CVSS SCORE	6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Apple
AFFECTED PRODUCTS	OS X
VULNERABILITY DETAILS	This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Apple OS X. 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 GetUncompressedBitmapRepresentation method. The issue lies in the failure to properly validate the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute arbitrary code under the context of the user.
ADDITIONAL DETAILS	Apple has issued an update to correct this vulnerability. More details can be found at: https://support.apple.com/en-us/HT206567
DISCLOSURE TIMELINE	2016-03-16 - Vulnerability reported to vendor 2016-05-27 - Coordinated public release of advisory
CREDIT	lokihardt

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