CVE-2017-6794 : Exploit Details and Defense Strategies

Cisco Meeting Server has a vulnerability in its CLI command-parsing code that allows a local attacker with valid administrator credentials to exploit command injection and elevate privileges to root.

Understanding CVE-2017-6794

What is CVE-2017-6794?

A vulnerability in Cisco Meeting Server enables an authenticated local attacker to execute arbitrary commands and escalate privileges to root by exploiting the CLI command-parsing code.

The Impact of CVE-2017-6794

This vulnerability allows attackers to execute arbitrary commands and gain root access on affected systems, potentially leading to unauthorized control and data compromise.

Technical Details of CVE-2017-6794

Vulnerability Description

The vulnerability lies in the CLI command-parsing code of Cisco Meeting Server
Attackers can exploit this flaw by submitting specially-crafted CLI commands
Successful exploitation can lead to arbitrary command execution and privilege escalation

Affected Systems and Versions

Vulnerable versions include Cisco Meeting Server 2.0, 2.1, and 2.2

Exploitation Mechanism

Attackers need valid administrator credentials to authenticate and exploit the vulnerability
The CLI does not adequately validate user input for certain commands

Mitigation and Prevention

Immediate Steps to Take

Apply patches provided by Cisco to address the vulnerability
Monitor network traffic for any signs of exploitation

Long-Term Security Practices

Implement the principle of least privilege to restrict user access
Regularly update and patch software to prevent known vulnerabilities

Patching and Updates

Cisco has released patches to fix the vulnerability in affected versions of Cisco Meeting Server