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zdi3S LabsZDI-15-327
HistoryJul 14, 2015 - 12:00 a.m.

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

2015-07-1400:00:00
3S Labs
www.zerodayinitiative.com
12

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.782 High

EPSS

Percentile

98.2%

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.

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.782 High

EPSS

Percentile

98.2%