PT-2020-4377 · Microsoft · Office Excel+2

Kdot · Published 2020-10-13 · Updated 2023-12-31 · CVE-2020-16929

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Microsoft Excel (affected versions not specified)

Description: A remote code execution issue exists in Microsoft Excel software due to improper handling of objects in memory. This could allow an attacker to run arbitrary code in the context of the current user. If the user has administrative rights, the attacker could take control of the affected system, install programs, view, change, or delete data, or create new accounts with full user rights. Exploitation requires a user to open a specially crafted file with an affected version of Microsoft Excel. This can occur through email or web-based attacks where the user is convinced to open the malicious file.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Buffer Overflow

Use After Free

Weakness Enumeration

CWE-119

CWE-416

Related Identifiers

BDU:2020-04890

BDU:2020-05443

CVE-2020-16929

ZDI-20-1251

Affected Products

Office Excel

Office

Sharepoint Server

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2020-16929 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16929 · Security Note
• https://bdu.fstec.ru/vul/2020-04890 · Security Note
• https://bdu.fstec.ru/vul/2020-05443 · Security Note
• https://osv.dev/vulnerability/CVE-2020-16929 · Vendor Advisory
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16929 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-16929 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-20-1251 · Security Note
• https://cybersecurity-help.cz/vdb/SB2020101337 · Note