CVE-2018-0283 : Security Advisory and Response

A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to restart an instance of the Snort detection engine on an affected device, resulting in a brief denial of service (DoS) condition. The flaw arises from the incorrect handling of Transport Layer Security (TLS) TCP connection setup in the affected software.

Understanding CVE-2018-0283

This CVE involves a vulnerability in Cisco Firepower System Software that could be exploited to cause a denial of service condition on affected devices.

What is CVE-2018-0283?

The vulnerability allows an unauthorized individual to remotely trigger a restart of the Snort detection engine on affected devices by manipulating TLS traffic.

The Impact of CVE-2018-0283

Exploiting this vulnerability could lead to a temporary denial of service state on the affected device, disrupting normal operations.

Technical Details of CVE-2018-0283

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The flaw in the detection engine of Cisco Firepower System Software enables attackers to restart the Snort detection engine remotely, causing a denial of service condition.

Affected Systems and Versions

Product: Cisco Firepower System Software
Version: Cisco Firepower System Software

Exploitation Mechanism

Attackers exploit the vulnerability by sending manipulated TLS traffic to the affected device.

Mitigation and Prevention

Protective measures to mitigate the risks associated with CVE-2018-0283.

Immediate Steps to Take

Apply vendor-provided patches promptly to address the vulnerability.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories from Cisco and apply relevant patches to secure systems.