CVE-2017-2790 Information

Description

When processing a record type of 0x3c from a Workbook stream from an Excel file (.xls) JustSystems Ichitaro Office trusts that the size is greater than zero subtracts one from the length and uses this result as the size for a memcpy. This results in a heap-based buffer overflow and can lead to code execution under the context of the application.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.securityfocus.com/bid/96442 http://www.talosintelligence.com/reports/TALOS-2016-0197/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8