CVE-2021-33451 Explained : Impact and Mitigation

An issue was discovered in lrzip version 0.641 where there are memory leaks in fill_buffer() in stream.c.

Understanding CVE-2021-33451

This CVE pertains to memory leaks in a specific function within lrzip version 0.641.

What is CVE-2021-33451?

CVE-2021-33451 highlights memory leaks present in the fill_buffer() function in stream.c within lrzip version 0.641.

The Impact of CVE-2021-33451

The presence of memory leaks in this function could potentially lead to resource exhaustion and system instability.

Technical Details of CVE-2021-33451

In-depth technical information regarding the vulnerability.

Vulnerability Description

The vulnerability involves memory leaks in the fill_buffer() function within stream.c of lrzip version 0.641.

Affected Systems and Versions

lrzip version 0.641 is specifically impacted by this vulnerability.

Exploitation Mechanism

Attackers may exploit these memory leaks to exhaust system resources and destabilize the affected system.

Mitigation and Prevention

Preventive measures to address CVE-2021-33451.

Immediate Steps to Take

Users should consider updating lrzip to a patched version that addresses the memory leaks.
Monitor system resource usage for signs of abnormalities.

Long-Term Security Practices

Regularly update software and libraries to patched versions to avoid known vulnerabilities.
Conduct security audits and testing to identify and address potential memory leaks.

Patching and Updates

Stay informed about security updates for lrzip and apply patches promptly to mitigate the risk of memory leaks.