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New Weaponized Big Sur Vulnerability

By May 6, 2021July 21st, 2022No Comments
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New Weaponized Big Sur Vulnerability

Apple has published security updates for macOS Big Sur, iOS, iPadOS and watchOS. Four vulnerabilities are being actively weaponized.

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New Critical Big Sur Vulnerability

Apple has published security updates for macOS Big Sur, iOS, iPadOS and watchOS.  In total, four vulnerabilities are addressed in the updates, all of which are reported as being actively weaponized in the wild.

Apple has published security updates which take macOS Big Sur to 11.3.1, iOS (for older devices) to 12.5.3, iOS and iPadOS to 14.5.1, and watchOS to 7.4.1. In total, four vulnerabilities are addressed in the updates, one of which is common to all updates. All four vulnerabilities are WebKit issues and are all reported as being actively exploited in the wild. All four vulnerabilities, if successfully exploited, could potentially allow a remote attacker to execute arbitrary code.

Vulnerability Details

  • CVSS Score: 8.8
  • Attack Vector: Network
  • Attack Complexity:  Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged

CVEs

  • CVE-2021-30661
  • CVE-2021-30663
  • CVE-2021-30665
  • CVE-2021-30666

Recommendations: Apply applicable patches, updates, or workarounds as necessary.

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