Advisory Details

July 12th, 2018

(Pwn2Own) Microsoft Edge WebGL ImageData Use-After-Free Information Disclosure Vulnerability

CVE ID	CVE-2018-1025
CVSS SCORE	5.0, AV:N/AC:L/Au:N/C:P/I:N/A:N
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Edge
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['30811']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS	This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Microsoft Edge. 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 ImageData objects in WebGL. By performing actions in JavaScript an attacker can cause a pointer to be reused after it has been freed. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process.
ADDITIONAL DETAILS	Microsoft has issued an update to correct this vulnerability. More details can be found at: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-1025
DISCLOSURE TIMELINE	2018-03-18 - Vulnerability reported to vendor 2018-07-12 - Coordinated public release of advisory 2018-07-12 - Advisory Updated
CREDIT	Richard Zhu (fluorescence)

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