Advisory Details

May 14th, 2018

Microsoft Office Graph Serialized Data Out-Of-Bounds Write Remote Code Execution Vulnerability

CVE ID	CVE-2018-8157
CVSS SCORE	5.1, AV:N/AC:H/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Office
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Graph. 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 processing of serialized data. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code under the context of the current user at medium integrity.
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-2018-8157
DISCLOSURE TIMELINE	2018-02-01 - Vulnerability reported to vendor 2018-05-14 - Coordinated public release of advisory 2018-05-14 - Advisory Updated
CREDIT	willJ of Tencent PC Manager

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