CVE-2021-46880 : What You Need to Know
Discover the details of CVE-2021-46880, an authentication bypass vulnerability in LibreSSL and OpenBSD versions before 3.4.2 and 7.0 errata 006, potentially leading to unauthorized access.
CVE-2021-46880 involves an authentication bypass vulnerability in LibreSSL and OpenBSD versions before 3.4.2 and 7.0 errata 006 respectively.
Understanding CVE-2021-46880
What is CVE-2021-46880?
The vulnerability in x509/x509_verify.c in LibreSSL and OpenBSD allows authentication bypass due to the improper handling of errors in unverified certificate chains.
The Impact of CVE-2021-46880
This vulnerability could potentially allow malicious actors to bypass authentication mechanisms, compromising the security of the affected systems.
Technical Details of CVE-2021-46880
Vulnerability Description
The issue arises from the incorrect processing of errors in unverified certificate chains, leading to possible authentication bypass.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Versions: All versions of LibreSSL before 3.4.2 and OpenBSD before 7.0 errata 006
Exploitation Mechanism
An attacker could exploit this vulnerability by manipulating certificate chains to trick the system into accepting an unverified certificate.
Mitigation and Prevention
Immediate Steps to Take
- Apply the latest security patches provided by LibreSSL and OpenBSD.
- Implement strict certificate validation processes.
Long-Term Security Practices
- Regularly update software and firmware to mitigate future vulnerabilities.
- Enhance network security with firewalls and intrusion detection systems.
Patching and Updates
Ensure all systems are running the latest versions of LibreSSL (3.4.2 and above) and OpenBSD (7.0 errata 006 and above).