CVE-2020-0787

Microsoft Windows Background Intelligent Transfer Service (BITS) Improper Privilege Management Vulnerability

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

*SSVC

Descriptions

An elevation of privilege vulnerability exists when the Windows Background Intelligent Transfer Service (BITS) improperly handles symbolic links, aka 'Windows Background Intelligent Transfer Service Elevation of Privilege Vulnerability'.

Existe una vulnerabilidad de elevación de privilegios cuando el Windows Background Intelligent Transfer Service (BITS) maneja inapropiadamente los enlaces simbólicos, también se conoce como "Windows Background Intelligent Transfer Service Elevation of Privilege Vulnerability".

Microsoft Windows BITS is vulnerable to to a privilege elevation vulnerability if it improperly handles symbolic links. An actor can exploit this vulnerability to execute arbitrary code with system-level privileges.

*Credits: N/A

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

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
2020-03-12 CVE Published
2020-09-11 First Exploit
2022-01-28 Exploited in Wild
2022-07-28 KEV Due Date
2024-08-04 CVE Updated
2024-11-07 EPSS Updated

CWE

CWE-59: Improper Link Resolution Before File Access ('Link Following')

CAPEC

References (10)

URL	Tag	Source
https://itm4n.github.io/cve-2020-0787-windows-bits-eop
https://github.com/itm4n/BitsArbitraryFileMove
https://attackerkb.com/assessments/e61cfec0-d766-4e7e-89f7-5aad2460afb8
https://googleprojectzero.blogspot.com/2018/04/windows-exploitation-tricks-exploiting.html
https://itm4n.github.io/usodllloader-part1
https://itm4n.github.io/usodllloader-part2

URL	Date	SRC
https://github.com/cbwang505/CVE-2020-0787-EXP-ALL-WINDOWS-VERSION	2020-09-11
https://github.com/yanghaoi/CVE-2020-0787	2022-02-20
http://packetstormsecurity.com/files/158056/Background-Intelligent-Transfer-Service-Privilege-Escalation.html	2024-08-04

URL	Date	SRC
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0787	2024-07-24

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Microsoft Search vendor "Microsoft"		Windows 10 1507 Search vendor "Microsoft" for product "Windows 10 1507"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows 10 1607 Search vendor "Microsoft" for product "Windows 10 1607"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows 10 1709 Search vendor "Microsoft" for product "Windows 10 1709"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows 10 1803 Search vendor "Microsoft" for product "Windows 10 1803"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows 10 1809 Search vendor "Microsoft" for product "Windows 10 1809"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows 10 1903 Search vendor "Microsoft" for product "Windows 10 1903"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows 10 1909 Search vendor "Microsoft" for product "Windows 10 1909"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows 7 Search vendor "Microsoft" for product "Windows 7"				-		sp1		Affected
Microsoft Search vendor "Microsoft"		Windows 8.1 Search vendor "Microsoft" for product "Windows 8.1"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows Rt 8.1 Search vendor "Microsoft" for product "Windows Rt 8.1"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows Server 1803 Search vendor "Microsoft" for product "Windows Server 1803"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows Server 1903 Search vendor "Microsoft" for product "Windows Server 1903"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows Server 1909 Search vendor "Microsoft" for product "Windows Server 1909"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2008 Search vendor "Microsoft" for product "Windows Server 2008"				-		sp2		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2008 Search vendor "Microsoft" for product "Windows Server 2008"				r2 Search vendor "Microsoft" for product "Windows Server 2008" and version "r2"		sp1, x64		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2012 Search vendor "Microsoft" for product "Windows Server 2012"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2012 Search vendor "Microsoft" for product "Windows Server 2012"				r2 Search vendor "Microsoft" for product "Windows Server 2012" and version "r2"		-		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2016 Search vendor "Microsoft" for product "Windows Server 2016"				-		-		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2019 Search vendor "Microsoft" for product "Windows Server 2019"				-		-		Affected