Advisory Details

May 15th, 2017

(Pwn2Own) Apple Safari Array concat Integer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2017-2544
CVSS SCORE	6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Apple
AFFECTED PRODUCTS	Safari
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari. 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 Array.concat method. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code under the context of the current process.
ADDITIONAL DETAILS	Apple has issued an update to correct this vulnerability. More details can be found at: https://support.apple.com/en-us/HT207804
DISCLOSURE TIMELINE	2017-03-15 - Vulnerability reported to vendor 2017-05-15 - Coordinated public release of advisory
CREDIT	Liu Long of 360Vulcan

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