CVE-2019-1888 : Security Advisory and Response

Cisco Unified Contact Center Express Privilege Escalation Vulnerability

Understanding CVE-2019-1888

This CVE involves a security flaw in the Administration Web Interface of Cisco Unified Contact Center Express, allowing an authenticated remote attacker to upload files and run commands on the underlying OS.

What is CVE-2019-1888?

The vulnerability in Cisco Unified Contact Center Express enables an attacker with valid Administrator credentials to upload files containing OS commands, potentially leading to arbitrary command execution.

The Impact of CVE-2019-1888

CVSS Base Score: 7.2 (High Severity)
Attack Vector: Network
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
Privileges Required: High

Technical Details of CVE-2019-1888

The following technical details provide insight into the vulnerability.

Vulnerability Description

The flaw allows attackers to upload files with OS commands, executing them on the system with the web interface's privileges.

Affected Systems and Versions

Product: Cisco Unified Contact Center Express
Vendor: Cisco
Affected Version: n/a

Exploitation Mechanism

Attackers exploit the vulnerability by uploading files containing OS commands, which the system executes, potentially granting elevated privileges.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigating this vulnerability.

Immediate Steps to Take

Ensure strong Administrator credentials
Monitor and restrict file uploads
Regularly review system logs for suspicious activities

Long-Term Security Practices

Implement least privilege access
Conduct regular security audits and penetration testing
Stay informed about security updates and patches

Patching and Updates

Apply relevant security patches from Cisco