CVE-2019-15959 : Exploit Details and Defense Strategies

Cisco Small Business SPA500 Series IP Phones have a security vulnerability that can be exploited by physically close attackers. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2019-15959

Cisco SPA500 Series IP Phones are affected by a local script execution vulnerability that allows attackers to run scripts with elevated privileges.

What is CVE-2019-15959?

The vulnerability in Cisco SPA500 Series IP Phones enables attackers in close physical proximity to execute arbitrary commands by leveraging development testing scripts left on the device.

The Impact of CVE-2019-15959

CVSS Base Score: 6.6 (Medium Severity)
Attack Vector: Physical
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
Attackers can gain elevated privileges and execute malicious scripts by physically accessing the device.

Technical Details of CVE-2019-15959

Cisco SPA500 Series IP Phones vulnerability details.

Vulnerability Description

Attackers can exploit the presence of development scripts on the device by inserting a USB storage device to run scripts with elevated privileges.

Affected Systems and Versions

Affected Product: Cisco SPA525G2 5-line IP Phone
Vendor: Cisco
Affected Version: Not Applicable

Exploitation Mechanism

Attackers need physical access to the device's interface and insert a USB storage device to exploit the vulnerability.

Mitigation and Prevention

Protect your systems from CVE-2019-15959.

Immediate Steps to Take

Disable USB ports on the affected devices if not in use.
Implement physical security measures to prevent unauthorized access to the devices.

Long-Term Security Practices

Regularly update firmware and security patches on the devices.
Conduct security audits to identify and remove any unnecessary scripts or testing tools.

Patching and Updates

Check for and apply any patches or updates provided by Cisco to address this vulnerability.