CVE intelligence and bounded remediation

CVE-2019-8573 — An input validation issue was addressed with improved input validation

High CVSS 7.8

An input validation issue was addressed with improved input validation. This issue is fixed in macOS Mojave 10.14.5, Security Update 2019-003 High Sierra, Security Update 2019-003 Sierra, iOS 12.3, watchOS 5.2.1. A remote attacker may be able to cause a system denial of service.

Severity
High
CVSS
7.8 (2.0)
Published
2020-10-27
CISA KEV
Not currently listed
Ecosystem
apple/platform
Weaknesses
CWE-20

Affected products

  • apple / iphone_os
  • apple / mac_os_x
  • 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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