CVE-2020-3826 Explained : Impact and Mitigation
Learn about CVE-2020-3826, an out-of-bounds read vulnerability in Apple products that could lead to arbitrary code execution. Find out affected systems and how to mitigate the risk.
An out-of-bounds read vulnerability in multiple Apple products could allow arbitrary code execution when processing a specially crafted image.
Understanding CVE-2020-3826
What is CVE-2020-3826?
CVE-2020-3826 is an out-of-bounds read vulnerability that was addressed with improved input validation in various Apple products.
The Impact of CVE-2020-3826
Processing a maliciously crafted image could potentially lead to arbitrary code execution on affected devices.
Technical Details of CVE-2020-3826
Vulnerability Description
The vulnerability involves an out-of-bounds read issue that could be exploited through a specially crafted image.
Affected Systems and Versions
The following Apple products and versions are affected:
- iOS versions less than 13.3.1 and iPadOS versions less than 13.3.1
- macOS Catalina versions less than 10.15.3
- tvOS versions less than 13.3.1
- watchOS versions less than 6.1.2
- iTunes for Windows versions less than 12.10.4
- iCloud for Windows versions less than 11.0
- iCloud for Windows (Legacy) versions less than 7.17
Exploitation Mechanism
The vulnerability can be exploited by processing a specially crafted image, triggering the out-of-bounds read and potentially executing arbitrary code.
Mitigation and Prevention
Immediate Steps to Take
- Update affected Apple products to the fixed versions mentioned above.
- Avoid opening or processing images from untrusted or unknown sources.
Long-Term Security Practices
- Regularly update all software and applications to the latest versions.
- Exercise caution when downloading or opening files from the internet.
Patching and Updates
Apply security patches and updates provided by Apple to ensure protection against known vulnerabilities.