Advisory Details

September 14th, 2018

Microsoft Windows Excel Database Driver FORMULA Record Integer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2018-8392
CVSS SCORE	6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Windows
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. 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 msexcl40.dll Excel database driver module, which ships with Microsoft Windows. A crafted FORMULA record in an Excel database file can trigger an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute 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-2018-8392
DISCLOSURE TIMELINE	2018-06-05 - Vulnerability reported to vendor 2018-09-14 - Coordinated public release of advisory 2018-09-14 - Advisory Updated
CREDIT	Pengsu Cheng of Trend Micro Security Research

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