CVE-2018-14463 : Security Advisory and Response

A buffer over-read vulnerability has been identified in the VRRP parser of tcpdump before version 4.9.3. This CVE is distinct from CVE-2019-15167.

Understanding CVE-2018-14463

This CVE pertains to a specific vulnerability in the VRRP parser of tcpdump.

What is CVE-2018-14463?

The vulnerability involves a buffer over-read in the print-vrrp.c:vrrp_print() function when processing VRRP version 2 packets in tcpdump versions prior to 4.9.3.

The Impact of CVE-2018-14463

The vulnerability could potentially allow an attacker to exploit the buffer over-read issue in the VRRP parser, leading to a security breach or denial of service.

Technical Details of CVE-2018-14463

This section covers the technical aspects of the CVE.

Vulnerability Description

The VRRP parser in tcpdump before version 4.9.3 is susceptible to a buffer over-read in the print-vrrp.c:vrrp_print() function when handling VRRP version 2 packets.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by crafting malicious VRRP version 2 packets to trigger the buffer over-read in the tcpdump VRRP parser.

Mitigation and Prevention

Steps to address and prevent the CVE.

Immediate Steps to Take

Update tcpdump to version 4.9.3 or later to mitigate the vulnerability.
Monitor vendor security advisories for patches and updates.

Long-Term Security Practices

Regularly update software and systems to the latest versions.
Implement network segmentation and access controls to minimize the impact of potential exploits.

Patching and Updates

Apply patches and updates provided by tcpdump or relevant vendors to address the vulnerability.