CVE-2018-0348 : Security Advisory and Response

A weakness has been identified in the Command Line Interface (CLI) of the Cisco SD-WAN Solution, potentially allowing a remote attacker with authentication to inject arbitrary commands with root privileges.

Understanding CVE-2018-0348

This CVE involves a vulnerability in the Cisco SD-WAN Solution CLI that could be exploited by authenticated remote attackers.

What is CVE-2018-0348?

The vulnerability stems from inadequate input validation in the CLI of the Cisco SD-WAN Solution, enabling attackers to execute commands with root privileges by injecting specially crafted commands.

The Impact of CVE-2018-0348

Attackers with authentication can inject malicious commands into the VPN subsystem, potentially leading to unauthorized execution of commands with root privileges.
Successful exploitation could compromise the affected systems, allowing attackers to gain control over the device.

Technical Details of CVE-2018-0348

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows authenticated attackers to inject arbitrary commands with root privileges due to insufficient input validation in the Cisco SD-WAN Solution CLI.

Affected Systems and Versions

The vulnerability affects older versions of the Cisco SD-WAN Solution (prior to Release 18.3.0) including various Cisco products like vBond Orchestrator Software, vEdge Series Routers, vManage Network Management Software, and more.

Exploitation Mechanism

Attackers need authentication credentials to access the affected CLI parameter and must submit a specially crafted input to the load command within the VPN subsystem.
The attacker can execute commands with root privileges upon successful exploitation.

Mitigation and Prevention

Protecting systems from CVE-2018-0348 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update to the latest version of the Cisco SD-WAN Solution (Release 18.3.0) to mitigate the vulnerability.
Monitor network traffic for any suspicious activities that could indicate exploitation attempts.

Long-Term Security Practices

Implement strong authentication mechanisms to prevent unauthorized access to the CLI.
Regularly review and update security configurations to address potential vulnerabilities.

Patching and Updates

Apply security patches provided by Cisco to address the vulnerability and enhance system security.