// For flags

CVE-2020-1581

Microsoft Office Click-to-Run Elevation of Privilege Vulnerability

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An elevation of privilege vulnerability exists in the way that Microsoft Office Click-to-Run (C2R) components handle objects in memory. An attacker who successfully exploited the vulnerability could elevate privileges. The attacker would need to already have the ability to execute code on the system.
An attacker could exploit this vulnerability by running a specially crafted application on the victim system.
The security update addresses the vulnerability by correcting how Microsoft Office Click-to-Run (C2R) components handle objects in memory.

Se presenta una vulnerabilidad de elevaciĆ³n de privilegios en la manera en que los componentes Microsoft Office Click-to-Run (C2R) manejan objetos en memoria, tambiĆ©n se conoce como "Microsoft Office Click-to-Run Elevation of Privilege Vulnerability".

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Office. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the OfficeClickToRun executable. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of SYSTEM.

*Credits: hackyzh and lm0963 of DBAppSecurity Zion Lab
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-11-04 CVE Reserved
  • 2020-08-13 CVE Published
  • 2024-05-04 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Microsoft
Search vendor "Microsoft"
365 Apps
Search vendor "Microsoft" for product "365 Apps"
-enterprise
Affected
Microsoft
Search vendor "Microsoft"
Office
Search vendor "Microsoft" for product "Office"
2013
Search vendor "Microsoft" for product "Office" and version "2013"
click-to-run
Affected
Microsoft
Search vendor "Microsoft"
Office
Search vendor "Microsoft" for product "Office"
2019
Search vendor "Microsoft" for product "Office" and version "2019"
-
Affected