CVE-2018-14464 : Exploit Details and Defense Strategies

In print-lmp.c:lmp_print_data_link_subobjs() of tcpdump version prior to 4.9.3, a buffer over-read issue in the LMP parser poses a security risk.

Understanding CVE-2018-14464

The vulnerability in the LMP parser of tcpdump can lead to a buffer over-read, potentially exploited by attackers.

What is CVE-2018-14464?

The LMP parser in tcpdump before version 4.9.3 has a buffer over-read vulnerability in print-lmp.c:lmp_print_data_link_subobjs().

The Impact of CVE-2018-14464

This vulnerability could allow remote attackers to execute arbitrary code or cause a denial of service (DoS) condition by triggering the buffer over-read.

Technical Details of CVE-2018-14464

The technical aspects of the CVE-2018-14464 vulnerability are as follows:

Vulnerability Description

The buffer over-read occurs in the LMP parser of tcpdump before version 4.9.3.

Affected Systems and Versions

Product: tcpdump
Vendor: N/A
Versions affected: Versions prior to 4.9.3

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted network packets to the affected system, triggering the buffer over-read.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2018-14464:

Immediate Steps to Take

Update tcpdump to version 4.9.3 or later to patch the vulnerability.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update software and systems to ensure all security patches are applied promptly.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories and updates from tcpdump and relevant vendors to address vulnerabilities promptly.