Auth bypass in Microsoft Windows 10
CVE-2019-1170
An elevation of privilege vulnerability exists when reparse points are created by sandboxed processes allowing sandbox escape. An attacker who successfully exploited the vulnerability could use the sandbox escape to elevate privileges on an affected system. To exploit the vulnerability, an attacker would first have to log on to the system, and then run a specially crafted application to take control over the affected system. The security update addresses the vulnerability by preventing sandboxed processes from creating reparse points targeting inaccessible files.
Vulnerability class: Broken Access Control
EPSS: 0.024 (82.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.9 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L.
Affected products
- Microsoft Windows_10 — versions 1809, 1903
- Microsoft Windows 10 Version 1809 — versions 10.0.0
- Microsoft Windows 10 Version 1903 For 32-bit Systems — versions 10.0.0
- Microsoft Windows 10 Version 1903 For Arm64-based Systems — versions 10.0.0
- Microsoft Windows 10 Version 1903 For X64-based Systems — versions 10.0.0
- Microsoft Windows_server_2016 — versions 1903
- Microsoft Windows Server 2019 — versions 10.0.0
- Microsoft Windows_server_2019
- Microsoft Windows Server 2019 (Server Core Installation) — versions 10.0.0
- Microsoft Windows Server, Version 1903 (Server Core Installation) — versions 10.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
- secure@microsoft.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2019-1170?
- CVE-2019-1170 is a high-severity vulnerability in Microsoft Windows 10, classified under Missing Authorization. CVSS score: 7.9/10. Published 2019-08-14.
- How severe is CVE-2019-1170?
- High severity. CVSS v3 base score is 7.9 out of 10.
- Is CVE-2019-1170 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.