CVE-2021-45484 : Exploit Details and Defense Strategies

In NetBSD through 9.2, the IPv6 fragment ID generation algorithm employs a weak cryptographic PRNG.

Understanding CVE-2021-45484

In this CVE, NetBSD through version 9.2 is impacted by a vulnerability related to the IPv6 fragment ID generation algorithm.

What is CVE-2021-45484?

The vulnerability stems from the utilization of a weak cryptographic PRNG in the IPv6 fragment ID generation algorithm in NetBSD up to version 9.2.

The Impact of CVE-2021-45484

The vulnerability can potentially lead to security compromise and exploitation by malicious actors.

Technical Details of CVE-2021-45484

This section provides technical insights into the specifics of CVE-2021-45484.

Vulnerability Description

NetBSD through version 9.2 is susceptible to attacks due to the weak cryptographic PRNG used in the IPv6 fragment ID generation algorithm.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: Not applicable

Exploitation Mechanism

Weakness in the cryptographic PRNG of the IPv6 fragment ID generation algorithm

Mitigation and Prevention

Mitigation strategies and preventive measures to address CVE-2021-45484.

Immediate Steps to Take

Update NetBSD to a patched version, if available
Implement firewall rules to block potentially malicious IPv6 traffic

Long-Term Security Practices

Regularly monitor and apply security updates to the operating system
Conduct security audits to identify and mitigate vulnerabilities

Patching and Updates

NetBSD users should apply security patches provided by the NetBSD project