CVE-2017-12255 : What You Need to Know

Cisco UCS Central Software CLI vulnerability allows local attackers to gain shell access.

Understanding CVE-2017-12255

A vulnerability in Cisco UCS Central Software CLI could enable authenticated local attackers to exploit a Restricted Shell Break Vulnerability, potentially leading to shell access.

What is CVE-2017-12255?

The CVE-2017-12255 vulnerability involves insufficient validation of commands in the Cisco UCS Central Software CLI, allowing local attackers to execute specific commands to gain unauthorized shell access.

The Impact of CVE-2017-12255

The vulnerability could be exploited by authenticated local attackers to access the system shell, potentially leading to unauthorized system control and data compromise.

Technical Details of CVE-2017-12255

The technical aspects of the CVE-2017-12255 vulnerability are as follows:

Vulnerability Description

Identified in the CLI of Cisco UCS Central Software
Lack of proper validation for commands entered
Known as a Restricted Shell Break Vulnerability
Exploitable by authenticated local attackers

Affected Systems and Versions

Product: Cisco UCS Central Software
Version: Cisco UCS Central Software

Exploitation Mechanism

Attacker needs to input a specific command with crafted arguments
Successful exploitation grants the attacker shell access to the affected system

Mitigation and Prevention

Steps to address and prevent CVE-2017-12255:

Immediate Steps to Take

Apply vendor-provided patches and updates
Monitor system logs for suspicious activities
Restrict access to the CLI to authorized personnel

Long-Term Security Practices

Regular security training for staff on best practices
Implement least privilege access controls
Conduct regular security audits and assessments

Patching and Updates

Regularly check for security advisories from Cisco
Apply patches promptly to mitigate known vulnerabilities