CVE-2019-15251 Explained : Impact and Mitigation

Cisco SPA100 Series Analog Telephone Adapters have been found to have vulnerabilities that could allow an attacker to execute arbitrary code with elevated privileges.

Understanding CVE-2019-15251

This CVE identifies weaknesses in the Cisco SPA100 Series Analog Telephone Adapters that could be exploited by authenticated attackers to execute malicious code.

What is CVE-2019-15251?

The vulnerabilities in the Cisco SPA100 Series Analog Telephone Adapters stem from inadequate validation of user input in the web-based management interface, enabling attackers to execute code with elevated privileges.

The Impact of CVE-2019-15251

Attack Complexity: Low
Attack Vector: Adjacent Network
Confidentiality, Integrity, and Availability Impact: High
Privileges Required: Low
Scope: Unchanged
User Interaction: None
CVSS Base Score: 8.0 (High)

Technical Details of CVE-2019-15251

Vulnerability Description

The vulnerabilities allow nearby authenticated attackers to execute arbitrary code with elevated privileges due to insufficient input validation in the web-based management interface.

Affected Systems and Versions

Product: Cisco SPA112 2-Port Phone Adapter
Vendor: Cisco
Version: Unspecified

Exploitation Mechanism

To exploit these vulnerabilities, attackers need to authenticate on the web-based management interface and send crafted requests to the device to execute arbitrary code.

Mitigation and Prevention

Immediate Steps to Take

Disable the web-based management interface if not needed
Implement strong, unique passwords for device access
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update firmware and software patches
Conduct security assessments and audits periodically

Patching and Updates

Apply patches and updates provided by Cisco to address the vulnerabilities in the Cisco SPA100 Series Analog Telephone Adapters.