CVE-2020-4068 : Security Advisory and Response
Learn about CVE-2020-4068, a heap-based buffer overflow vulnerability in APNSwift 1.0.0. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
APNSwift 1.0.0 is susceptible to a heap-based buffer overflow vulnerability, potentially triggered by calling APNSwiftSigner.sign(digest:). This issue has been addressed in version 1.0.1.
Understanding CVE-2020-4068
APNSwift 1.0.0 is affected by a heap-based buffer overflow vulnerability, posing a medium severity risk.
What is CVE-2020-4068?
CVE-2020-4068 is a vulnerability in APNSwift 1.0.0 that could lead to a heap buffer overflow when invoking APNSwiftSigner.sign(digest:), fixed in version 1.0.1.
The Impact of CVE-2020-4068
The vulnerability has a CVSS base score of 6.3 (Medium severity) and low impact on confidentiality, integrity, and availability.
Technical Details of CVE-2020-4068
APNSwift 1.0.0 vulnerability details and impact.
Vulnerability Description
APNSwift 1.0.0 is prone to a heap-based buffer overflow due to improper handling of memory operations.
Affected Systems and Versions
- Product: APNSwift
- Vendor: kylebrowning
- Version: 1.0.0
Exploitation Mechanism
The vulnerability can be exploited by calling the specific function APNSwiftSigner.sign(digest:) in version 1.0.0.
Mitigation and Prevention
Actions to mitigate and prevent the CVE-2020-4068 vulnerability.
Immediate Steps to Take
- Upgrade to APNSwift version 1.0.1 or later to eliminate the vulnerability.
- Monitor vendor security advisories for any further updates or patches.
Long-Term Security Practices
- Regularly update software and libraries to the latest secure versions.
- Implement secure coding practices to prevent buffer overflow vulnerabilities.
Patching and Updates
Apply patches and updates provided by the vendor to ensure the security of APNSwift.