CVE-2021-1872 : Vulnerability Insights and Analysis

A logic issue was addressed with improved state management in iOS, iPadOS, watchOS, and macOS. This CVE affects multiple Apple products and versions with a specific issue related to muting CallKit calls.

Understanding CVE-2021-1872

This CVE refers to a logic issue in Apple products that has security implications for muting CallKit calls.

What is CVE-2021-1872?

CVE-2021-1872 involves a logic issue that has been identified and resolved in iOS, iPadOS, watchOS, and macOS. It specifically affects the operation of muting CallKit calls.

The Impact of CVE-2021-1872

The vulnerability addressed by CVE-2021-1872 could result in the failure to enable mute during a CallKit call, potentially impacting user privacy and call management.

Technical Details of CVE-2021-1872

This section delves into the specifics of the vulnerability, the affected systems, and how the exploitation can occur.

Vulnerability Description

The logic issue in iOS, iPadOS, watchOS, and macOS versions allowed for a CallKit call muting problem, which has the potential to not enable the mute function during a ringing call.

Affected Systems and Versions

The affected Apple products include iOS, iPadOS, macOS, and watchOS with versions less than iOS 14.5, iPadOS 14.5, macOS Big Sur 11.3, and watchOS 7.4, respectively.

Exploitation Mechanism

Exploiting CVE-2021-1872 involves taking advantage of the logic flaw related to CallKit call muting, leading to potential security risks for Apple users.

Mitigation and Prevention

In this section, we discuss the steps that users and organizations can take to mitigate the risks posed by CVE-2021-1872.

Immediate Steps to Take

Users should update their affected Apple devices to the fixed versions mentioned earlier to prevent exploitation of the vulnerability.

Long-Term Security Practices

Maintaining regular software updates, following best security practices, and being cautious with call management on Apple devices can help enhance long-term security.

Patching and Updates

Apple has released patches in iOS 14.5, iPadOS 14.5, macOS Big Sur 11.3, and watchOS 7.4 to address the logic issue and ensure proper enablement of mute during CallKit calls.