CVE intelligence and bounded remediation

CVE-2020-0401 — In setInstallerPackageName of PackageManagerService.java, there is a missing permission check

High CVSS 7.8

In setInstallerPackageName of PackageManagerService.java, there is a missing permission check. This could lead to local escalation of privilege and granting spurious permissions with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-8.0 Android-8.1 Android-9 Android-10 Android-11Android ID: A-150857253

Severity
High
CVSS
7.8 (3.1)
Published
2020-09-17
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-862

Affected products

  • google / android / 8.0
  • google / android / 8.1
  • google / android / 9.0
  • google / android / 10.0

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

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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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