PT-2017-2960 · Microsoft · Office Compatibility Pack+6

Published 2017-09-12 · Updated 2023-10-03 · CVE-2017-8631

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Microsoft Office Web Apps versions (affected versions not specified) Microsoft Excel versions (affected versions not specified) Microsoft SharePoint Server versions (affected versions not specified) Microsoft Office Compatibility Pack versions (affected versions not specified) Microsoft Excel Viewer versions (affected versions not specified) Microsoft Office Online Server versions (affected versions not specified)

Description The issue is related to the improper handling of objects in memory, which can be exploited by a remote attacker to execute arbitrary code with the privileges of the current user. This can be achieved by using a specially crafted file. The exploitation requires a user to open the malicious file with an affected version of the software.

Recommendations For Microsoft Office Web Apps, update to a version that includes the fix for this issue. For Microsoft Excel, update to a version that includes the fix for this issue. For Microsoft SharePoint Server, update to a version that includes the fix for this issue. For Microsoft Office Compatibility Pack, update to a version that includes the fix for this issue. For Microsoft Excel Viewer, update to a version that includes the fix for this issue. For Microsoft Office Online Server, update to a version that includes the fix for this issue. As a temporary workaround, consider avoiding the use of specially crafted files with affected versions of the software until a patch is available.

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

BDU:2017-02285

CVE-2017-8631

ZDI-17-727

Affected Products

Office Excel

Excel Viewer

Office Compatibility Pack

Office Online Server

Office Web Apps

Sharepoint Server

Office

References · 10

• https://osv.dev/vulnerability/CVE-2017-8631 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-17-727 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8631 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8631 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2017-8631 · Security Note
• https://bdu.fstec.ru/vul/2017-02285 · Security Note
• http://securityfocus.com/bid/100751 · Note
• https://t.me/cvenotify/58921 · Telegram Post
• https://t.me/cvenotify/20749 · Telegram Post
• http://securitytracker.com/id/1039315 · Note