CVE-2017-5484 : Exploit Details and Defense Strategies

A buffer overflow vulnerability exists in the ATM parser of tcpdump versions prior to 4.9.0, specifically within the sig_print() function of the print-atm.c file.

Understanding CVE-2017-5484

This CVE entry describes a critical buffer overflow issue in tcpdump that could be exploited by attackers.

What is CVE-2017-5484?

The vulnerability in the ATM parser of tcpdump allows for a buffer overflow, potentially leading to remote code execution or denial of service attacks.

The Impact of CVE-2017-5484

Exploitation of this vulnerability could result in an attacker executing arbitrary code or causing a denial of service on systems running affected versions of tcpdump.

Technical Details of CVE-2017-5484

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The buffer overflow in the sig_print() function of print-atm.c in tcpdump versions prior to 4.9.0 allows attackers to trigger the overflow via crafted ATM traffic.

Affected Systems and Versions

Affected Product: tcpdump
Affected Versions: Versions prior to 4.9.0

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted ATM traffic to a system running an affected version of tcpdump, triggering the buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2017-5484 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update tcpdump to version 4.9.0 or later to mitigate the vulnerability.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Implement network segmentation to limit the impact of potential attacks.
Regularly update and patch software to address known vulnerabilities.

Patching and Updates

Apply patches provided by the vendor to fix the buffer overflow issue in tcpdump.