CVE-2018-14466 Explained : Impact and Mitigation

A buffer over-read issue in the Rx parser of tcpdump versions prior to 4.9.3 can lead to vulnerabilities in affected systems.

Understanding CVE-2018-14466

This CVE identifies a specific vulnerability in tcpdump versions before 4.9.3 that can be exploited through the Rx parser.

What is CVE-2018-14466?

The vulnerability lies in the functions print-rx.c:rx_cache_find() and rx_cache_insert() within the Rx parser of tcpdump versions prior to 4.9.3.

The Impact of CVE-2018-14466

This vulnerability can result in a buffer over-read issue, potentially leading to security breaches and unauthorized access to sensitive information.

Technical Details of CVE-2018-14466

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The Rx parser in tcpdump before version 4.9.3 has a buffer over-read vulnerability specifically in print-rx.c:rx_cache_find() and rx_cache_insert().

Affected Systems and Versions

Vulnerable systems: tcpdump versions prior to 4.9.3
Affected components: print-rx.c:rx_cache_find() and rx_cache_insert()

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the Rx parser in tcpdump to trigger a buffer over-read, potentially leading to unauthorized access.

Mitigation and Prevention

Protecting systems from CVE-2018-14466 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update tcpdump to version 4.9.3 or newer to mitigate the vulnerability.
Monitor network traffic for any suspicious activities that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update software and security patches to prevent known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential breaches.

Patching and Updates

Stay informed about security advisories and updates from tcpdump and relevant vendors to apply patches promptly.