Advisory Details

April 15th, 2015

Microsoft Word Use-After-Free Remote Code Execution Vulnerability

CVE ID	CVE-2015-1650
CVSS SCORE	6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Office Word
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Word. 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 processing of abstract number elements in numbering.xml. By adding unexpected nodes within an abstractNum node, the attacker can cause memory to be used after it is freed, leading to arbitrary code execution in the context of the Word process.
ADDITIONAL DETAILS	Microsoft has issued an update to correct this vulnerability. More details can be found at: https://technet.microsoft.com/en-us/library/security/ms15-033.aspx
DISCLOSURE TIMELINE	2015-01-27 - Vulnerability reported to vendor 2015-04-15 - Coordinated public release of advisory
CREDIT	3S Labs

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