CVE-2021-1753 : Security Advisory and Response
Learn about CVE-2021-1753, the out-of-bounds read vulnerability in iOS, iPadOS, and macOS addressed by Apple. Understand the impact, affected systems, exploitation, and mitigation strategies.
This CVE-2021-1753 article provides an overview of the vulnerability addressed by Apple in iOS, iPadOS, and macOS, focusing on the impact, affected systems, exploitation, and mitigation strategies.
Understanding CVE-2021-1753
In this section, we will delve into the details of CVE-2021-1753 and its implications.
What is CVE-2021-1753?
CVE-2021-1753 involves an out-of-bounds read vulnerability that was mitigated by enhancing bounds checking. This flaw could allow an attacker to execute arbitrary code by manipulating a specially crafted image.
The Impact of CVE-2021-1753
The vulnerability could be exploited to achieve arbitrary code execution on systems running affected versions of iOS, iPadOS, and macOS. Apple addressed this issue in macOS Big Sur 11.2, Security Update 2021-001 for Catalina and Mojave, iOS 14.4, and iPadOS 14.4.
Technical Details of CVE-2021-1753
In this section, we will explore the technical aspects of CVE-2021-1753.
Vulnerability Description
The vulnerability stemmed from inadequate bounds checking, resulting in an out-of-bounds read. By processing a maliciously crafted image, an attacker could trigger this flaw
Affected Systems and Versions
The vulnerability impacted iOS and iPadOS versions below 14.4 and macOS versions below 11.2.
Exploitation Mechanism
Attackers could exploit this flaw by enticing users to open or view a malicious image file, leading to the execution of arbitrary code.
Mitigation and Prevention
This section provides guidance on mitigating the risks associated with CVE-2021-1753.
Immediate Steps to Take
Users are advised to update their Apple devices to the patched versions immediately to prevent exploitation of this vulnerability.
Long-Term Security Practices
Practicing caution while opening files or content from untrusted sources can enhance overall system security and reduce the risk of exploitation.
Patching and Updates
Apple has released patches for iOS, iPadOS, and macOS to address CVE-2021-1753. It is crucial to apply these updates promptly to secure your devices against potential threats.