CVE intelligence and bounded remediation

CVE-2018-1116 — A flaw was found in polkit before version 0.116

Medium CVSS 4.7

A flaw was found in polkit before version 0.116. The implementation of the polkit_backend_interactive_authority_check_authorization function in polkitd allows to test for authentication and trigger authentication of unrelated processes owned by other users. This may result in a local DoS and information disclosure.

Severity
Medium
CVSS
4.7 (3.0)
Published
2018-07-10
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-285, CWE-862

Affected products

  • debian / debian_linux / 8.0
  • canonical / ubuntu_linux / 12.04
  • polkit_project / polkit

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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