Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Informations
Name CVE-2020-16947 First vendor Publication 2020-10-16
Vendor Cve Last vendor Modification 2023-12-31

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 5.9 Temporal Score 7.5
Exploitabality Sub Score 1.6
 
Attack Vector Network Attack Complexity High
Privileges Required None User Interaction Required
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 9.3 Attack Range Network
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A remote code execution vulnerability exists in Microsoft Outlook software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the targeted user. If the targeted user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Outlook software. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file designed to exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file.

Note that where severity is indicated as Critical in the Affected Products table, the Preview Pane is an attack vector.

The security update addresses the vulnerability by correcting how Outlook handles objects in memory.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16947

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-787 Out-of-bounds Write (CWE/SANS Top 25)
50 % CWE-125 Out-of-bounds Read

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 1
Application 1

Snort® IPS/IDS

Date Description
2020-12-01 Microsoft Office Outlook email parsing remote code execution attempt
RuleID : 56157 - Revision : 1 - Type : FILE-OFFICE
2020-12-01 Microsoft Office Outlook email parsing remote code execution attempt
RuleID : 56156 - Revision : 1 - Type : FILE-OFFICE

Sources (Detail)

Source Url
MISC http://packetstormsecurity.com/files/169961/Microsoft-Outlook-2019-16.0.13231...
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1...
https://www.zerodayinitiative.com/advisories/ZDI-20-1249/
https://www.zerodayinitiative.com/advisories/ZDI-20-1250/

Alert History

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Date Informations
2024-01-01 00:27:38
  • Multiple Updates
2023-01-31 21:27:45
  • Multiple Updates
2022-11-21 21:27:31
  • Multiple Updates
2021-05-04 13:50:26
  • Multiple Updates
2021-04-22 03:01:54
  • Multiple Updates
2020-12-01 21:23:14
  • Multiple Updates
2020-10-22 21:23:34
  • Multiple Updates
2020-10-21 00:22:55
  • Multiple Updates
2020-10-19 21:23:04
  • Multiple Updates
2020-10-17 09:22:54
  • Multiple Updates
2020-10-17 05:22:55
  • First insertion