CVE-2018-0313 : Security Advisory and Response

Cisco NX-OS Software's NX-API feature is vulnerable to command injection, allowing an authenticated remote attacker to execute arbitrary commands with root privileges.

Understanding CVE-2018-0313

An overview of the vulnerability affecting Cisco NX-OS Software.

What is CVE-2018-0313?

An authenticated remote attacker can exploit a vulnerability in Cisco NX-OS Software's NX-API feature to execute a command-injection exploit by sending a malicious packet to the management interface of an affected system.
The vulnerability stems from improper validation of user-supplied data in the NX-API subsystem.
Attackers can send a malicious HTTP or HTTPS packet to the management interface of an enabled NX-API feature system to gain root privileges.

The Impact of CVE-2018-0313

Successful exploitation allows attackers to execute arbitrary commands with root privileges.
Various Cisco products are affected, including MDS 9000 Series Multilayer Switches, Nexus Series Switches, and more.

Technical Details of CVE-2018-0313

Insight into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability allows attackers to inject commands into the system through the NX-API feature.

Affected Systems and Versions

Cisco products impacted include MDS 9000 Series, Nexus 2000/3000/3500/5500/5600/6000/7000/7700/9000 Series, and more.

Exploitation Mechanism

Attackers exploit the vulnerability by sending malicious packets to the management interface of an enabled NX-API feature system.

Mitigation and Prevention

Measures to mitigate the CVE-2018-0313 vulnerability.

Immediate Steps to Take

Disable NX-API if not required for operation.
Implement firewall rules to restrict access to the management interface.
Regularly monitor network traffic for any suspicious activities.

Long-Term Security Practices

Keep systems up to date with the latest security patches.
Conduct regular security audits and penetration testing.

Patching and Updates

Apply patches provided by Cisco to address the vulnerability.