CVE intelligence and bounded remediation

CVE-2021-31000 — A permissions issue was addressed with improved validation

Medium CVSS 4.3

A permissions issue was addressed with improved validation. This issue is fixed in iOS 15.2 and iPadOS 15.2, watchOS 8.3, macOS Monterey 12.1, tvOS 15.2. A malicious application may be able to read sensitive contact information.

Severity
Medium
CVSS
4.3 (2.0)
Published
2021-08-24
CISA KEV
Not currently listed
Ecosystem
apple/platform
Weaknesses
CWE-276

Affected products

  • apple / ipados
  • apple / iphone_os
  • apple / macos
  • apple / tvos
  • apple / watchos

Matched remediation archetype

Privilege escalation and unsafe privilege management

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

Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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