CVE-2021-1741 Explained : Impact and Mitigation
Learn about CVE-2021-1741, an out-of-bounds read vulnerability affecting Apple products such as iOS, iPadOS, macOS, watchOS, and tvOS. Update your devices to the latest versions for security.
An out-of-bounds read vulnerability has been identified and fixed by Apple across multiple products including iOS, iPadOS, macOS, watchOS, tvOS. The vulnerability could be exploited by processing a maliciously crafted image, potentially leading to arbitrary code execution.
Understanding CVE-2021-1741
This CVE pertains to an out-of-bounds read vulnerability that allowed attackers to execute arbitrary code on impacted systems by manipulating specially crafted images.
What is CVE-2021-1741?
CVE-2021-1741 is a security vulnerability that affects Apple products, specifically iOS, iPadOS, macOS, watchOS, and tvOS. The flaw could be leveraged by an attacker to trigger arbitrary code execution through a malicious image.
The Impact of CVE-2021-1741
The impact of this vulnerability is significant as it enables attackers to execute arbitrary code on affected devices, potentially leading to unauthorized access, data theft, or further compromise of the system.
Technical Details of CVE-2021-1741
This vulnerability is an out-of-bounds read issue that was addressed by Apple through improved bounds checking. The fix was included in various updates such as macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4, and iPadOS 14.4.
Vulnerability Description
The vulnerability arises due to improper handling of image data, allowing malicious actors to craft image files that trigger the out-of-bounds read.
Affected Systems and Versions
Multiple versions of iOS, iPadOS, macOS, watchOS, and tvOS were impacted by this vulnerability, including versions less than 14.4, 11.2, and 7.3 for different products.
Exploitation Mechanism
By processing a specifically crafted image file, attackers could exploit this vulnerability to execute arbitrary code on the targeted system.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-1741, users are strongly advised to apply the necessary security updates provided by Apple.
Immediate Steps to Take
Immediately update the affected Apple devices to the latest supported versions to prevent exploitation of this vulnerability.
Long-Term Security Practices
Regularly update all software and firmware to ensure the latest security patches are applied promptly.
Patching and Updates
Stay informed about security updates released by Apple for your devices and apply them as soon as they are available.