External risk intelligence

Apple OS Vulnerability Allows Code Execution By Malicious Apps

CVE advisoryKnown Exploit

CVE-2019-8605

A memory management flaw in Apple operating systems could permit a malicious application to execute code with system privileges. This impacts the integrity and confidentiality of data, posing a business risk of system compromise and potential data breaches. Organizations should apply vendor updates to mitigate this ris

1Halo Surface Signal

Use After Free

Apple Iphone Os

before 12.3before 10.14.5before 5.2.1

External exposure likelihood

Halo Surface Signal score for CVE-2019-8605

This vulnerability is located within the memory management of client-side operating systems (iOS, macOS, tvOS, watchOS). It requires a malicious application to be executed locally on the device to trigger the use-after-free condition. It does not involve a network-accessible service, interface, or protocol that would be exposed to the public internet.

Horizon Alert

Summary of the vulnerability and why it matters

A flaw in memory management within Apple's operating systems for iPhone, Mac, Apple TV, and Apple Watch could allow a malicious application to execute code with system privileges. This vulnerability impacts the integrity and confidentiality of data by potentially enabling unauthorized code execution. The business risk involves the potential for system compromise, leading to data breaches and disruption of services.

  • Vulnerable Apple operating systems
  • Memory management flaw
  • Arbitrary code execution

Attack Path

How an attacker could exploit the issue

A malicious application can exploit a memory management flaw to execute arbitrary code with system privileges. This vulnerability impacts Apple's iOS, macOS, tvOS, and watchOS operating systems. The exploitation requires the application to be present on the affected device.

  • Malicious application present on device.
  • Attacker triggers memory management flaw.
  • Arbitrary code executes with system privileges.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could permit a malicious application to execute arbitrary code with system privileges. The issue has been addressed through improved memory management in relevant operating system updates.

  • Likely attacker skill level: Intermediate
  • Required access or conditions: Local application execution
  • Business risk or urgency: Moderate

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

A use-after-free vulnerability has been identified in Apple operating systems, potentially allowing malicious applications to execute arbitrary code with system privileges. This issue has been addressed through vendor updates, which organizations should implement to mitigate risk. The vulnerability has a high severity score and is listed on the Known Exploited Vulnerabilities catalog, indicating potential for widespread impact if exploited.

  • Identify affected Apple devices and operating system versions.
  • Isolate vulnerable systems or restrict application installations.
  • Apply vendor-provided updates, verify successful installation, and monitor for related security events.

Frequently asked questions

What is Apple iPhone OS and what is CVE-2019-8605?

iPhone OS, now known as iOS, is Apple's mobile operating system. CVE-2019-8605 is a memory management vulnerability in Apple's iOS, macOS, tvOS, and watchOS that could allow a malicious application to execute arbitrary code with system privileges.

How does CVE-2019-8605 allow malicious code execution?

This vulnerability is a 'use after free' weakness. It occurs when a program tries to use memory that has already been freed, potentially leading to the execution of unauthorized code with system privileges.

What operating systems are affected by CVE-2019-8605?

CVE-2019-8605 affects Apple's iPhone OS (iOS), macOS, tvOS, and watchOS. Specific versions that are vulnerable include those prior to iOS 12.3, macOS 10.14.5, tvOS 12.3, and watchOS 5.2.1.

What is the relevance of CVE-2019-8605 regarding threat advisories?

CVE-2019-8605 is listed on the Known Exploited Vulnerabilities (KEV) catalog, signifying it has been actively exploited. The Halo Surface Signal indicates a very unlikely exploitation scenario due to its internal nature, requiring a malicious app to be executed locally on the device.

What practical steps can be taken to respond to CVE-2019-8605?

To respond, identify all affected Apple devices and operating system versions. It is advisable to isolate vulnerable systems or restrict new application installations. Applying vendor-provided updates and verifying their successful installation is crucial, followed by monitoring for any related security events.

References