CVE-2020-27943 : Security Advisory and Response
Learn about CVE-2020-27943, a memory corruption issue in font file processing on Apple devices, potentially leading to arbitrary code execution. Find out affected systems, exploitation details, and mitigation steps.
A memory corruption issue in font file processing could lead to arbitrary code execution in Apple products.
Understanding CVE-2020-27943
What is CVE-2020-27943?
A memory corruption issue in font file processing could allow an attacker to execute arbitrary code on affected Apple devices.
The Impact of CVE-2020-27943
Exploiting this vulnerability could result in arbitrary code execution by processing a maliciously crafted font file.
Technical Details of CVE-2020-27943
Vulnerability Description
The vulnerability stemmed from a memory corruption issue during font file processing, which was mitigated by enhancing 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
Processing a specially crafted font file could trigger the vulnerability, potentially leading to arbitrary code execution.
Mitigation and Prevention
Immediate Steps to Take
- Update affected devices to the fixed versions: tvOS 14.3, iOS 14.3, iPadOS 14.3, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.2
Long-Term Security Practices
- Regularly update all Apple devices to the latest software versions
- Exercise caution when downloading and opening files from untrusted sources
Patching and Updates
Apply security patches and updates provided by Apple to address this vulnerability.