CVE intelligence and bounded remediation

CVE-2019-1170 — An elevation of privilege vulnerability exists when reparse points are created by sandboxed processes allowing sandbox escape

High CVSS 8.8

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.

Severity
High
CVSS
8.8 (3.1)
Published
2019-08-14
CISA KEV
Not currently listed
Ecosystem
windows/system
Weaknesses
CWE-862

Affected products

  • microsoft / windows_10 / 1809
  • microsoft / windows_10 / 1903
  • microsoft / windows_server_2016 / 1903
  • microsoft / windows_server_2019

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

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