CVE-2020-7217 : Vulnerability Insights and Analysis

An ni_dhcp4_fsm_process_dhcp4_packet memory leak in openSUSE wicked 0.6.55 and earlier allows network attackers to cause a denial of service by sending DHCP4 packets with a different client-id.

Understanding CVE-2020-7217

This CVE involves a memory leak vulnerability in openSUSE wicked that can be exploited by malicious network attackers.

What is CVE-2020-7217?

The vulnerability in openSUSE wicked 0.6.55 and earlier versions enables denial of service attacks through the manipulation of DHCP4 packets.

The Impact of CVE-2020-7217

The vulnerability can lead to a denial of service condition, affecting the availability of network services and potentially disrupting operations.

Technical Details of CVE-2020-7217

This section provides more technical insights into the CVE.

Vulnerability Description

The memory leak in ni_dhcp4_fsm_process_dhcp4_packet in openSUSE wicked allows attackers to exploit DHCP4 packets with a different client-id, leading to a denial of service.

Affected Systems and Versions

Systems running openSUSE wicked 0.6.55 and earlier versions

Exploitation Mechanism

Attackers can exploit the vulnerability by sending DHCP4 packets with altered client-ids to trigger the memory leak.

Mitigation and Prevention

Protecting systems from CVE-2020-7217 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply patches or updates provided by openSUSE to address the vulnerability
Monitor network traffic for any suspicious DHCP4 packet activities

Long-Term Security Practices

Implement network segmentation to contain potential attacks
Regularly update and patch software to prevent known vulnerabilities

Patching and Updates

Stay informed about security advisories from openSUSE and apply patches promptly to mitigate the risk of exploitation.