CVE-2020-9876 Explained : Impact and Mitigation
Learn about CVE-2020-9876, an out-of-bounds write issue in Apple products. Opening a malicious PDF file could lead to application termination or code execution. Find mitigation steps here.
An out-of-bounds write issue affecting various Apple products has been addressed with improved bounds checking. Opening a maliciously crafted PDF file could lead to unexpected application termination or arbitrary code execution.
Understanding CVE-2020-9876
This CVE involves an out-of-bounds write issue that has been fixed in multiple Apple products to prevent potential security risks.
What is CVE-2020-9876?
CVE-2020-9876 is an out-of-bounds write vulnerability that could be exploited by opening a specially crafted PDF file, resulting in unexpected application termination or execution of arbitrary code.
The Impact of CVE-2020-9876
The vulnerability could allow attackers to exploit the affected systems, potentially leading to unauthorized code execution or system crashes.
Technical Details of CVE-2020-9876
This section provides more in-depth technical information about the vulnerability.
Vulnerability Description
The issue involves an out-of-bounds write problem that has been mitigated through enhanced bounds checking.
Affected Systems and Versions
- iOS versions less than 13.6 and iPadOS versions less than 13.6
- macOS Catalina versions less than 10.15.6
- tvOS versions less than 13.4.8
- watchOS versions less than 6.2.8
- iTunes for Windows versions less than 12.10.8
- iCloud for Windows versions less than 11.3
- iCloud for Windows (Legacy) versions less than 7.20
Exploitation Mechanism
Opening a maliciously crafted PDF file triggers the vulnerability, potentially leading to unexpected application termination or arbitrary code execution.
Mitigation and Prevention
To address CVE-2020-9876 and enhance system security, follow these steps:
Immediate Steps to Take
- Update affected Apple products to the specified versions that include the fix.
- Avoid opening PDF files from untrusted or unknown sources.
- Monitor official Apple security advisories for any further updates.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Implement robust security measures such as firewalls and antivirus software.
Patching and Updates
- Install the latest updates provided by Apple for the affected products to ensure protection against known vulnerabilities.