CVE-2017-7401 Explained : Impact and Mitigation

A flaw in the parse_packet() and parse_part_sign_sha256() functions in collectd versions 5.7.1 and earlier could allow remote attackers to cause a denial of service by triggering an infinite loop.

Understanding CVE-2017-7401

This CVE involves a vulnerability in the way specific functions interact in the network.c file of collectd versions 5.7.1 and earlier.

What is CVE-2017-7401?

The vulnerability allows remote attackers to exploit the parse_packet() and parse_part_sign_sha256() functions, potentially leading to a denial of service on a collectd instance.

The Impact of CVE-2017-7401

If a collectd instance is configured with specific settings, attackers can execute an attack causing an infinite loop, resulting in a denial of service.

Technical Details of CVE-2017-7401

This section provides more technical insights into the vulnerability.

Vulnerability Description

The flaw in the interaction of parse_packet() and parse_part_sign_sha256() functions in collectd 5.7.1 and earlier versions allows remote attackers to trigger a denial of service by sending a crafted UDP packet.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: 5.7.1 and earlier

Exploitation Mechanism

Attackers exploit the vulnerability by sending a specifically crafted UDP packet to the collectd instance.

Mitigation and Prevention

Protecting systems from CVE-2017-7401 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update collectd to a non-vulnerable version.
Configure collectd with appropriate security settings to mitigate the risk.

Long-Term Security Practices

Regularly monitor and update collectd to address security vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.
Employ intrusion detection systems to detect and respond to malicious activities.

Patching and Updates

Apply patches provided by collectd to fix the vulnerability.
Stay informed about security advisories and updates from the vendor for ongoing protection.