CVE-2017-7849 : Exploit Details and Defense Strategies

A security vulnerability was discovered in Nessus 6.10.x prior to version 6.10.5 that could lead to a local denial of service situation due to insecure permissions while running in Agent Mode.

Understanding CVE-2017-7849

This CVE entry highlights a vulnerability in Nessus 6.10.x that could be exploited to cause a local denial of service.

What is CVE-2017-7849?

CVE-2017-7849 is a security vulnerability in Nessus 6.10.x versions before 6.10.5 that allows for a local denial of service attack due to insecure permissions in Agent Mode.

The Impact of CVE-2017-7849

The vulnerability could be exploited by an attacker to disrupt the normal operation of Nessus, potentially leading to service unavailability or interruptions.

Technical Details of CVE-2017-7849

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in Nessus 6.10.x before 6.10.5 stems from insecure permissions when operating in Agent Mode, enabling a local denial of service scenario.

Affected Systems and Versions

Product: Nessus
Vendor: N/A
Versions affected: Nessus 6.10.x

Exploitation Mechanism

The vulnerability can be exploited locally by leveraging the insecure permissions present in Nessus 6.10.x when running in Agent Mode.

Mitigation and Prevention

Protecting systems from CVE-2017-7849 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade Nessus to version 6.10.5 or newer to mitigate the vulnerability.
Monitor and restrict access to vulnerable systems.

Long-Term Security Practices

Regularly update and patch Nessus installations to address security flaws.
Implement the principle of least privilege to limit access rights and permissions.

Patching and Updates

Ensure that all software and systems, including Nessus, are regularly updated with the latest security patches to prevent exploitation of known vulnerabilities.