CVE-2019-11577 : Vulnerability Insights and Analysis

The version of dhcpcd prior to 7.2.1 has a buffer overflow vulnerability in the dhcp6_findna function, potentially allowing attackers to execute arbitrary code or cause a denial of service.

Understanding CVE-2019-11577

This CVE entry describes a specific vulnerability in the dhcpcd software.

What is CVE-2019-11577?

The vulnerability in dhcpcd before version 7.2.1 allows for a buffer overflow in the dhcp6_findna function when processing NA/TA addresses.

The Impact of CVE-2019-11577

If exploited, this vulnerability could lead to arbitrary code execution or denial of service attacks on systems running the affected dhcpcd version.

Technical Details of CVE-2019-11577

This section provides more technical insights into the vulnerability.

Vulnerability Description

The buffer overflow occurs in the dhcp6_findna function within dhcp6.c during the processing of NA/TA addresses.

Affected Systems and Versions

Affected Version: dhcpcd versions prior to 7.2.1

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious NA/TA addresses to trigger the buffer overflow and potentially execute arbitrary code.

Mitigation and Prevention

Protecting systems from CVE-2019-11577 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update dhcpcd to version 7.2.1 or later to mitigate the vulnerability.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Ensure that all systems running dhcpcd are regularly updated with the latest patches and security fixes.