PT-2019-1798 · Microsoft · Windows

Ma7H1As + 3 · Published 2019-04-09 · Updated 2025-04-04 · CVE-2019-0841

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Microsoft Windows (affected versions not specified)

Description The issue is related to errors in handling hard links in the Windows AppX Deployment Service (AppXSVC), which can be exploited by an attacker to elevate their privileges using a specially crafted application. An elevation-of-privilege vulnerability allows attackers to affect the system. There have been reports of a bypass for the recent Windows patch, with a second zero-day exploit disclosed that apparently bypasses Microsoft's patch for a Windows Elevation of Privilege (EoP) vulnerability.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

LPE

Link Following

Weakness Enumeration

CWE-59

CWE-264

Related Identifiers

BDU:2019-01450

CVE-2019-0841

ZDI-19-360

Affected Products

Windows

References · 38

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/appxsvc_hard_link_privesc.rb · Exploit
• 🔥 https://github.com/rogue-kdc/CVE-2019-0841 · Exploit
• 🔥 https://github.com/0x00-0x00/CVE-2019-0841-BYPASS · Exploit
• 🔥 https://github.com/likescam/CVE-2019-0841 · Exploit
• 🔥 https://exploit-db.com/exploits/47128 · Exploit
• 🔥 https://rastamouse.me/2019/04/weaponizing-cve-2019-0841-with-laps · Exploit
• 🔥 https://exploit-db.com/exploits/469766 · Exploit
• 🔥 https://exploit-db.com/exploits/46683 · Exploit
• 🔥 https://exploit-db.com/exploits/46976 · Exploit
• 🔥 http://packetstormsecurity.com/files/153642/AppXSvc-Hard-Link-Privilege-Escalation.html · Exploit
• 🔥 https://exploit-db.com/exploits/46938 · Exploit
• https://zerodayinitiative.com/advisories/ZDI-19-360 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-0841 · Security Note
• https://osv.dev/vulnerability/CVE-2019-0841 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0841 · Security Note