CVE-2018-0349 : Exploit Details and Defense Strategies

A weakness has been discovered in the Cisco SD-WAN Solution that could be exploited by a remote attacker with authenticated access. This vulnerability allows the attacker to overwrite files on the affected device's operating system.

Understanding CVE-2018-0349

This CVE identifies a vulnerability in the Cisco SD-WAN Solution that could lead to unauthorized file overwriting and privilege escalation.

What is CVE-2018-0349?

The vulnerability in the Cisco SD-WAN Solution allows a remote attacker with authenticated access to overwrite files on the device's operating system by manipulating a specific command in the software's CLI.

The Impact of CVE-2018-0349

The vulnerability enables attackers to overwrite arbitrary files on the underlying operating system of affected devices.
Successful exploitation could grant the attacker elevated privileges as the root user.
Various Cisco products are affected, including vBond Orchestrator Software, vEdge Series Routers, vEdge Cloud Router Platform, and more.

Technical Details of CVE-2018-0349

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability stems from inadequate validation of a specific command in the affected software's CLI, allowing attackers to overwrite files on the device's operating system.

Affected Systems and Versions

Cisco SD-WAN Solution versions prior to Release 18.3.0 are vulnerable.
Products impacted include vBond Orchestrator Software, vEdge Series Routers, vManage Network Management Software, and more.

Exploitation Mechanism

Attackers exploit the vulnerability by modifying a command in the CLI of an affected device, enabling them to overwrite files on the device's operating system and gain root user privileges.

Mitigation and Prevention

Protecting systems from CVE-2018-0349 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update affected Cisco SD-WAN Solution devices to Release 18.3.0 or later.
Monitor network traffic for any signs of unauthorized access or file manipulation.

Long-Term Security Practices

Implement strong authentication mechanisms to prevent unauthorized access.
Regularly audit and review CLI commands and configurations for any anomalies.

Patching and Updates

Apply patches and updates provided by Cisco to address the vulnerability.