CVE intelligence and bounded remediation

CVE-2019-8549 — Multiple input validation issues existed in MIG generated code

High CVSS 9.3

Multiple input validation issues existed in MIG generated code. These issues were addressed with improved validation. This issue is fixed in iOS 12.2, macOS Mojave 10.14.4, tvOS 12.2, watchOS 5.2. A malicious application may be able to execute arbitrary code with system privileges.

Severity
High
CVSS
9.3 (2.0)
Published
2019-12-18
CISA KEV
Not currently listed
Ecosystem
apple/platform
Weaknesses
CWE-20

Affected products

  • apple / iphone_os
  • apple / mac_os_x
  • apple / tvos
  • apple / watchos

Matched remediation archetype

Command, code, expression, and template injection

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

Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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