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Vulnerability Details : CVE-2019-0841

An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0730, CVE-2019-0731, CVE-2019-0796, CVE-2019-0805, CVE-2019-0836.
Publish Date : 2019-04-09 Last Update Date : 2019-06-07
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- CVSS Scores & Vulnerability Types

CVSS Score
7.2
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 264

- Products Affected By CVE-2019-0841

# Product Type Vendor Product Version Update Edition Language
1 OS Microsoft Windows 10 1703 Version Details Vulnerabilities
2 OS Microsoft Windows 10 1709 Version Details Vulnerabilities
3 OS Microsoft Windows 10 1803 Version Details Vulnerabilities
4 OS Microsoft Windows 10 1809 Version Details Vulnerabilities
5 OS Microsoft Windows Server 2016 1709 Version Details Vulnerabilities
6 OS Microsoft Windows Server 2016 1803 Version Details Vulnerabilities
7 OS Microsoft Windows Server 2019 - Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Microsoft Windows 10 4
Microsoft Windows Server 2016 2
Microsoft Windows Server 2019 1

- References For CVE-2019-0841

https://www.exploit-db.com/exploits/46683/
EXPLOIT-DB 46683
https://www.zerodayinitiative.com/advisories/ZDI-19-360/
http://packetstormsecurity.com/files/153215/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html
http://packetstormsecurity.com/files/153114/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841
http://packetstormsecurity.com/files/153009/Internet-Explorer-JavaScript-Privilege-Escalation.html
http://packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html

- Metasploit Modules Related To CVE-2019-0841

AppXSvc Hard Link Privilege Escalation
There exists a privilege escalation vulnerability for Windows 10 builds prior to build 17763. Due to the AppXSvc's improper handling of hard links, a user can gain full privileges over a SYSTEM-owned file. The user can then utilize the new file to execute code as SYSTEM. This module employs a technique using the Diagnostics Hub Standard Collector Service (DiagHub) which was discovered by James Forshaw to load and execute a DLL as SYSTEM.
Module type : exploit Rank : normal


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