CVE-2017-13039 : Exploit Details and Defense Strategies

A buffer over-read vulnerability was identified in the ISAKMP parser of tcpdump versions prior to 4.9.2, impacting various functions.

Understanding CVE-2017-13039

The vulnerability was made public on September 14, 2017.

What is CVE-2017-13039?

The buffer over-read occurs in the print-isakmp.c file within the ISAKMP parser of tcpdump versions prior to 4.9.2, affecting multiple functions.

The Impact of CVE-2017-13039

The vulnerability could allow an attacker to exploit the buffer over-read issue, potentially leading to information disclosure or denial of service.

Technical Details of CVE-2017-13039

The technical aspects of the vulnerability are as follows:

Vulnerability Description

The ISAKMP parser in tcpdump before version 4.9.2 has a buffer over-read in print-isakmp.c, affecting several functions.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability can be exploited by crafting malicious ISAKMP packets to trigger the buffer over-read in tcpdump.

Mitigation and Prevention

To address CVE-2017-13039, consider the following steps:

Immediate Steps to Take

Update tcpdump to version 4.9.2 or later to mitigate the vulnerability.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update and patch all software to prevent known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories from tcpdump and apply patches promptly to secure your systems.