Advisory Details

May 14th, 2018

Microsoft Office Excel PtgName Out-Of-Bounds Access Remote Code Execution Vulnerability

CVE ID	CVE-2018-8162
CVSS SCORE	6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Office Excel
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Office Excel. 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 references to defined names in Excel worksheet files. A crafted PtgName structure can trigger a memory access outside the bounds of an allocated data structure. An attacker can leverage this vulnerability to execute code under 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-2018-8162
DISCLOSURE TIMELINE	2018-03-08 - Vulnerability reported to vendor 2018-05-14 - Coordinated public release of advisory 2018-05-14 - Advisory Updated
CREDIT	Omair

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