Advisory Details

April 11th, 2018

Microsoft Windows Font Integer Overflow Privilege Escalation Vulnerability

CVE ID	CVE-2018-1008
CVSS SCORE	6.9, AV:L/AC:M/Au:N/C:C/I:C/A:C
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Windows
VULNERABILITY DETAILS	This vulnerability allows local attackers to escalate privileges on vulnerable installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the rendering of fonts. A crafted OpenType font rendered by the kernel can trigger an integer overflow before writing to memory. An attacker can leverage this vulnerability to escalate privileges and execute code as SYSTEM.
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-2018-1008
DISCLOSURE TIMELINE	2018-01-30 - Vulnerability reported to vendor 2018-04-11 - Coordinated public release of advisory 2018-04-11 - Advisory Updated
CREDIT	Haikuo Xie and Zheng Huang of Baidu Security Lab

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