Advisory Details

July 10th, 2017

(Pwn2Own) Google Chrome Array indexOf Out-Of-Bounds Access Remote Code Execution Vulnerability

CVE ID	CVE-2017-5053
CVSS SCORE	6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Google
AFFECTED PRODUCTS	Chrome
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Google Chrome. 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.prototype.indexOf method. By performing actions in JavaScript, an attacker can trigger a memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code under the context of the current process.
ADDITIONAL DETAILS	Google has issued an update to correct this vulnerability. More details can be found at: https://chromereleases.googleblog.com/2017/03/stable-channel-update-for-desktop_29.html
DISCLOSURE TIMELINE	2017-03-16 - Vulnerability reported to vendor 2017-07-10 - Coordinated public release of advisory
CREDIT	Tencent Security Team Sniper

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