Advisory Details

September 21st, 2015

(Pwn2Own) Adobe Flash Player DefineText Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2015-6678
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 Player. 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 DefineText tag. A specially crafted DefineFont2 tag can overflow a buffer of size TotalNumberOfGlyph * 2 bytes. An attacker can leverage this vulnerability to execute 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/apsb15-23.html
DISCLOSURE TIMELINE	2015-03-18 - Vulnerability reported to vendor 2015-09-21 - Coordinated public release of advisory
CREDIT	k33nteam

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