CVE-2020-27944 : Exploit Details and Defense Strategies
Learn about CVE-2020-27944, a memory corruption issue in font processing affecting Apple's iOS, iPadOS, tvOS, watchOS, and macOS. Find out how to mitigate the vulnerability.
A memory corruption issue in font file processing affecting Apple's iOS, iPadOS, tvOS, watchOS, and macOS.
Understanding CVE-2020-27944
What is CVE-2020-27944?
A memory corruption issue in font file processing that could allow arbitrary code execution.
The Impact of CVE-2020-27944
Processing a malicious font file could lead to arbitrary code execution on affected Apple devices.
Technical Details of CVE-2020-27944
Vulnerability Description
The issue stemmed from font file processing and was mitigated with enhanced input validation.
Affected Systems and Versions
- iOS and iPadOS versions less than 14.3
- tvOS versions less than 14.3
- watchOS versions less than 7.2
- macOS versions less than 11.1
Exploitation Mechanism
Maliciously crafted font files could trigger the vulnerability, potentially enabling arbitrary code execution.
Mitigation and Prevention
Immediate Steps to Take
- Update affected devices to the fixed versions: iOS 14.3, iPadOS 14.3, tvOS 14.3, watchOS 7.2, macOS Big Sur 11.1
Long-Term Security Practices
- Regularly update devices to the latest software versions
- Exercise caution when handling font files
Patching and Updates
Apply the necessary security updates provided by Apple to address the vulnerability.