Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows | 10 Version 1703 for 32-bit Systems, 10 Version 1703 for x64-based Systems, 10 Version 1709 for 32-bit Systems, 10 Version 1709 for x64-based Systems, 10 Version 1803 for 32-bit Systems, 10 Version 1803 for x64-based Systems, 10 Version 1803 for ARM64-based Systems, 10 Version 1809 for 32-bit System… | — |
| Microsoft | Windows Server | version 1709 (Core Installation), version 1803 (Core Installation), 2019, 2019 (Core installation) | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
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AppXSvc Hard Link Privilege Escalation
exploit/windows/local/appxsvc_hard_link_privesc
Exploit-DB 4
- Microsoft Windows 10 < build 17763 - AppXSvc Hard Link Privilege Escalation (Metasploit) EDB-47128 · local · Jul 16, 2019 · verified
- Microsoft Windows - AppX Deployment Service Local Privilege Escalation (3) EDB-46976 · local · Jun 7, 2019
- Microsoft Windows - AppX Deployment Service Local Privilege Escalation (2) EDB-46938 · local · May 23, 2019
- Microsoft Windows - AppX Deployment Service Privilege Escalation EDB-46683 · local · Apr 9, 2019
GitHub 4 repositories
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rogue-kdc/CVE-2019-0841 ★ 239 · Apr 5, 2019
PoC code for CVE-2019-0841 Privilege Escalation vulnerability
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0x00-0x00/CVE-2019-0841-BYPASS ★ 58 · Jun 11, 2019
A fully automatic CVE-2019-0841 bypass targeting all versions of Edge in Windows 10.
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likekabin/CVE-2019-0841 ★ 2 · Apr 10, 2019
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mappl3/CVE-2019-0841 ★ 0 · Apr 9, 2022
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841
- 46683 exploit
- http://packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html
- https://www.zerodayinitiative.com/advisories/ZDI-19-360/
- http://packetstormsecurity.com/files/153009/Internet-Explorer-JavaScript-Privilege-Escalation.html
- http://packetstormsecurity.com/files/153114/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html
- http://packetstormsecurity.com/files/153215/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html
- http://packetstormsecurity.com/files/153642/AppXSvc-Hard-Link-Privilege-Escalation.html