Advisory Details

July 14th, 2015

Microsoft Office Excel Chart Object Use-After-Free Information Disclosure Vulnerability

CVE ID	CVE-2015-2377
CVSS SCORE	5.8, AV:N/AC:M/Au:N/C:P/I:N/A:P
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Office Excel
VULNERABILITY DETAILS	This vulnerability allows remote attackers to read freed memory 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 processing of chart objects. A specially crafted chart object can cause Excel to load information from memory that has already been freed. An attacker can leverage this vulnerability to disclose information 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://technet.microsoft.com/en-us/library/security/MS15-070
DISCLOSURE TIMELINE	2015-04-23 - Vulnerability reported to vendor 2015-07-14 - Coordinated public release of advisory
CREDIT	3S Labs

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