CVE intelligence and bounded remediation

CVE-2018-4474 — A memory consumption issue was addressed with improved memory handling

High CVSS 7.5

A memory consumption issue was addressed with improved memory handling. This issue is fixed in iCloud for Windows 7.7, watchOS 5, Safari 12, iOS 12, iTunes 12.9 for Windows, tvOS 12. Unexpected interaction causes an ASSERT failure.

Severity
High
CVSS
7.5 (3.1)
Published
2020-10-27
CISA KEV
Not currently listed
Ecosystem
apple/platform
Weaknesses
CWE-400

Affected products

  • apple / icloud
  • apple / itunes
  • apple / safari
  • apple / iphone_os
  • apple / tvos
  • apple / watchos

Matched remediation archetype

Resource exhaustion and denial of service

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

Check exposure

  • Identify attacker-influenced work factors including input size, nesting, compression, fan-out, regex cost, allocation, recursion, retries, and connection lifetime.
  • Map per-request and shared CPU, memory, disk, descriptor, thread, queue, and downstream-service limits.
  • Determine whether authentication, tenancy, quotas, and rate controls apply before expensive processing begins.

Remediate safely

  • Bound input size, nesting, expansion, work, concurrency, queue depth, retries, and execution time before resource-intensive processing.
  • Release resources on every success, error, cancellation, and timeout path and use backpressure instead of unbounded buffering.
  • Update affected components and add small deterministic tests that assert resource ceilings rather than exhausting a host.

Authoritative sources

Complete CVE record and remediation plan

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