CVE-2021-41043 : Security Advisory and Response

CVE-2021-41043 affects tcpslice, a tool developed by The Tcpdump Group, triggering a Use After Free vulnerability. This vulnerability could potentially lead to AddressSanitizer triggers. The CVE has been attributed to Mohammad Hosein Askari.

Understanding CVE-2021-41043

This CVE involves a use after free vulnerability in tcpslice, with a specific impact on AddressSanitizer.

What is CVE-2021-41043?

CVE-2021-41043 is a vulnerability in the tcpslice tool leading to AddressSanitizer triggers due to a use after free issue.

The Impact of CVE-2021-41043

The primary impact of this vulnerability is the triggering of AddressSanitizer with no other confirmed impacts reported.

Technical Details of CVE-2021-41043

This section delves into the technical aspects of CVE-2021-41043.

Vulnerability Description

The vulnerability in tcpslice is classified as a use after free issue, specifically under CWE-416.

Affected Systems and Versions

Affected Product: tcpslice
Vendor: The Tcpdump Group
Vulnerable Version: Less than 1.5

Exploitation Mechanism

The exploitation of this vulnerability involves leveraging the use after free issue in the tcpslice tool.

Mitigation and Prevention

Mitigation strategies and steps to enhance security against CVE-2021-41043.

Immediate Steps to Take

Update tcpslice to version 1.5 or higher to mitigate the vulnerability.
Monitor official sources for patches or security advisories.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities.
Conduct security audits and code reviews to identify similar issues.

Patching and Updates

Ensure timely application of patches from vendors to address security vulnerabilities.