CVE-2021-30737 : Vulnerability Insights and Analysis
Learn about CVE-2021-30737, a memory corruption issue in the ASN.1 decoder that affects iOS, iPadOS, macOS, and watchOS. Find out the impact, affected systems, and mitigation steps.
A memory corruption issue in the ASN.1 decoder was addressed by removing the vulnerable code. This issue affects systems running iOS, iPadOS, macOS, and watchOS. Processing a maliciously crafted certificate may lead to arbitrary code execution.
Understanding CVE-2021-30737
This CVE ID refers to a memory corruption vulnerability in the ASN.1 decoder that impacts multiple Apple operating systems.
What is CVE-2021-30737?
The CVE-2021-30737 vulnerability involves a memory corruption issue in the ASN.1 decoder, which could be exploited by processing a malicious certificate to execute arbitrary code.
The Impact of CVE-2021-30737
The impact of this vulnerability is significant as it allows attackers to trigger arbitrary code execution by exploiting the memory corruption issue.
Technical Details of CVE-2021-30737
This section provides more insight into the vulnerability, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability arises due to a memory corruption issue in the ASN.1 decoder, allowing the execution of arbitrary code when processing a malicious certificate.
Affected Systems and Versions
The affected systems include iOS and iPadOS versions less than 14.6, macOS versions less than 11.4 and less than 2021, and watchOS versions less than 7.5.
Exploitation Mechanism
By processing a specially crafted certificate, attackers can exploit the vulnerability to execute arbitrary code on the targeted systems.
Mitigation and Prevention
In this section, proactive steps for immediate response and long-term security practices are outlined.
Immediate Steps to Take
Users should update their devices to the latest available versions such as tvOS 14.6, iOS 14.6, iPadOS 14.6, iOS 12.5.4, Security Update 2021-003 Catalina, macOS Big Sur 11.4, and watchOS 7.5 to mitigate the risk of exploitation.
Long-Term Security Practices
Regularly applying security updates, using reliable sources for software installations, and cautious online behavior are essential for enhancing system security.
Patching and Updates
Timely installation of security patches provided by Apple is crucial to address known vulnerabilities and ensure system protection.