CVE-2021-30953 : Security Advisory and Response
Learn about CVE-2021-30953, an out-of-bounds read vulnerability affecting Apple products. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
An out-of-bounds read vulnerability was identified and fixed in various Apple products. Exploiting this vulnerability could lead to arbitrary code execution when processing maliciously crafted web content.
Understanding CVE-2021-30953
This CVE describes an out-of-bounds read vulnerability that affects multiple Apple products.
What is CVE-2021-30953?
CVE-2021-30953 is an out-of-bounds read vulnerability that allows attackers to execute arbitrary code by exploiting the issue in how certain Apple products handle malicious web content.
The Impact of CVE-2021-30953
The exploitation of this vulnerability could result in arbitrary code execution, posing a significant security risk to users of the affected Apple products.
Technical Details of CVE-2021-30953
This section provides more detailed information about the vulnerability.
Vulnerability Description
The vulnerability involves an out-of-bounds read issue that was mitigated with improved bounds checking. It was specifically addressed in various products like tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, and watchOS 8.3.
Affected Systems and Versions
The vulnerability impacts watchOS versions earlier than 8.3, iOS and iPadOS versions earlier than 15.2, and macOS versions earlier than 12.1 and 15.2.
Exploitation Mechanism
Attackers can exploit the vulnerability by crafting malicious web content that triggers the out-of-bounds read issue, allowing them to execute arbitrary code on the affected systems.
Mitigation and Prevention
Protecting systems against CVE-2021-30953 requires immediate actions and long-term security measures.
Immediate Steps to Take
Users should update their Apple devices to the latest software versions that include the security patches for this vulnerability.
Long-Term Security Practices
Implementing secure coding practices, regular software updates, and user awareness training can help mitigate the risks associated with similar vulnerabilities.
Patching and Updates
Regularly check for security updates from Apple and apply patches promptly to ensure protection against known vulnerabilities.