CVE-2018-0117 : Vulnerability Insights and Analysis

A vulnerability in the Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software could allow a remote attacker to trigger a denial of service (DoS) situation by causing a reload of the system.

Understanding CVE-2018-0117

This CVE identifies a flaw in the Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software that could be exploited by an attacker without authentication.

What is CVE-2018-0117?

The vulnerability in the VPC-DI Software allows a remote attacker to manipulate data, leading to a reload of the system and causing a DoS situation.

The Impact of CVE-2018-0117

Exploitation of this vulnerability can result in a denial of service (DoS) situation by disconnecting all subscribers.
The flaw is a result of inadequate handling of user-supplied information in the affected software.

Technical Details of CVE-2018-0117

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The flaw lies in the ingress packet processing functionality of the Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software.
Insufficient handling of user-supplied data allows an attacker to cause a reload of the system.

Affected Systems and Versions

Versions impacted include Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software N4.0 to N5.5 with Cisco StarOS operating system from 19.2 to 21.3.

Exploitation Mechanism

By sending manipulated data to the internal distributed instance (DI) network address, an attacker can trigger an error condition, leading to a reload of the system.

Mitigation and Prevention

Steps to address and prevent the exploitation of CVE-2018-0117.

Immediate Steps to Take

Apply the necessary patches provided by Cisco to address the vulnerability.
Monitor network traffic for any signs of malicious activity.

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

Ensure that the affected systems are updated with the latest security patches from Cisco to mitigate the vulnerability.