CVE-2020-23273 : Security Advisory and Response

Tcpreplay v4.3.2 is affected by a heap-buffer overflow vulnerability in the randomize_iparp function in edit_packet.c, allowing attackers to launch a denial of service (DOS) attack through a specially crafted pcap.

Understanding CVE-2020-23273

This CVE identifies a specific vulnerability in Tcpreplay v4.3.2.

What is CVE-2020-23273?

The CVE-2020-23273 vulnerability is a heap-buffer overflow in the randomize_iparp function in edit_packet.c of Tcpreplay v4.3.2, enabling attackers to trigger a DOS attack via a malicious pcap.

The Impact of CVE-2020-23273

The vulnerability can lead to a denial of service (DOS) condition, potentially disrupting network operations and causing system unavailability.

Technical Details of CVE-2020-23273

Tcpreplay v4.3.2 is susceptible to a heap-buffer overflow issue.

Vulnerability Description

The vulnerability arises in the randomize_iparp function in edit_packet.c, allowing threat actors to exploit it for DOS attacks.

Affected Systems and Versions

Product: Tcpreplay v4.3.2
Vendor: N/A
Version: N/A

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious pcap to trigger the heap-buffer overflow, leading to a denial of service.

Mitigation and Prevention

To address CVE-2020-23273, consider the following steps:

Immediate Steps to Take

Update Tcpreplay to a patched version.
Implement network-level controls to filter out potentially malicious traffic.

Long-Term Security Practices

Regularly monitor and update software to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address weaknesses.

Patching and Updates

Apply patches and updates provided by the software vendor to fix the vulnerability.