Rewterz Threat Advisory – Multiple Apple Safari, macOS Big Sur, iOS, and iPadOSc Vulnerabilities

Severity

High

Analysis Summary

CVE-2021-30858

Apple Safari, macOS Big Sur, iOS, and iPadOS could allow a remote attacker to execute arbitrary code on the system, caused by a use-after-free in the WebKit component. By persuading a victim to visit a specially crafted Web site, an attacker could exploit this vulnerability to execute arbitrary code on the system.

CVE-2021-30860

Apple Safari, macOS Big Sur, iOS, iPadOS, Catalina and watchOS could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow in the CoreGraphics component. By persuading a victim to open a specially crafted PDF file, an attacker could exploit this vulnerability to execute arbitrary code on the system.

Impact

• Code Execution
• Integer Overflow

Affected Products

• Apple Safari 14.1.1
• Apple macOS Big Sur 11.5.0
• Apple iOS 14.7
• Apple iPadOS 14.7
• Apple watchOS 7.6.1
• Apple macOS Catalina

Remediation

Refer to the Apple security document for the patch, upgrade, or suggested workaround information:

For iOS 14.8 and iPadOS 14.8

https://support.apple.com/en-us/HT212807

For Catalina

https://support.apple.com/en-us/HT212805

For watchOS 7.6.2

https://support.apple.com/en-us/HT212806

For macOS Big Sur 11.6

https://support.apple.com/en-us/HT212804

For Safari 14.1.2

https://support.apple.com/en-us/HT212808