CVE-2021-30803 : Security Advisory and Response
Learn about CVE-2021-30803, a vulnerability in macOS Big Sur 11.5 that allows a malicious application to access a user's recent Contacts. Find out the impact, affected systems, and mitigation steps.
This CVE-2021-30803 article provides details about a permissions issue in macOS Big Sur 11.5 that could allow a malicious application to access a user's recent Contacts.
Understanding CVE-2021-30803
This section explores the impact, technical details, and mitigation strategies related to CVE-2021-30803.
What is CVE-2021-30803?
CVE-2021-30803 is a vulnerability in macOS Big Sur 11.5 that stems from a permissions issue, enabling potentially unauthorized access to a user's recent Contacts by a malicious application.
The Impact of CVE-2021-30803
The vulnerability in macOS Big Sur 11.5 poses a security risk as it can be exploited by a malicious application to access sensitive user data, particularly the recent Contacts list.
Technical Details of CVE-2021-30803
This section delves into the specifics of the vulnerability, including its description, affected systems and versions, and how it can be exploited.
Vulnerability Description
The flaw in macOS Big Sur 11.5 involves a permissions issue that could be exploited by a malicious application to gain unauthorized access to a user's recent Contacts.
Affected Systems and Versions
The vulnerability impacts macOS Big Sur versions earlier than 11.5, leaving them susceptible to the permissions issue and potential exploitation by malicious apps.
Exploitation Mechanism
By leveraging the permissions flaw in macOS Big Sur 11.5, a malicious application can bypass security measures and access a user's recent Contacts without proper authorization.
Mitigation and Prevention
This section outlines steps to mitigate the risks posed by CVE-2021-30803 and prevent unauthorized access to user data.
Immediate Steps to Take
Users are advised to update their macOS devices to version 11.5 or later to patch the vulnerability and prevent malicious apps from accessing their Contacts.
Long-Term Security Practices
Maintaining regular software updates, practicing caution while installing applications, and monitoring app permissions can enhance the overall security posture of macOS devices.
Patching and Updates
Apple has addressed the vulnerability in macOS Big Sur 11.5, emphasizing the importance of prompt system updates to address security flaws and protect user data.