PT-2017-1644 · Microsoft · Office+2

Published 2017-03-14 · Updated 2017-07-12 · CVE-2017-0020

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 (affected versions not specified) Microsoft Office Web Apps (affected versions not specified)

Description The issue is caused by a buffer overflow in memory, allowing a remote attacker to execute arbitrary code or cause a denial of service (memory corruption) by using a specially crafted document. The exploitation requires a user to open a specially crafted file with an affected version of Microsoft Office software. If successfully exploited, an attacker could run arbitrary code in the context of the current user, potentially taking control of the affected system if the user has administrative rights.

Recommendations For Microsoft Office, update to a version that properly handles objects in memory to prevent exploitation. For Microsoft Office Web Apps, consider restricting the use of specially crafted documents until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

BDU:2017-00797

CVE-2017-0020

Affected Products

Office

Office Web Apps

Office Excel

References · 8

• https://osv.dev/vulnerability/CVE-2017-0020 · Vendor Advisory
• https://bdu.fstec.ru/vul/2017-00797 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0020 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0020 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2017-0020 · Security Note
• http://technet.microsoft.com/library/security/MS17-014 · Note
• http://securitytracker.com/id/1038010 · Note
• http://securityfocus.com/bid/96050 · Note