CVE-2019-1956 Explained : Impact and Mitigation

Cisco SPA112 2-Port Phone Adapter Stored Cross-Site Scripting Vulnerability

Understanding CVE-2019-1956

This CVE involves a vulnerability in the Cisco SPA112 2-Port Phone Adapter's web-based interface that could allow a remote attacker to execute a cross-site scripting (XSS) attack.

What is CVE-2019-1956?

The vulnerability in the web-based interface of the Cisco SPA112 2-Port Phone Adapter enables an authenticated remote attacker to conduct a cross-site scripting (XSS) attack on another user of the device. This occurs due to inadequate validation of user input by the affected device's web interface.

The Impact of CVE-2019-1956

If successfully exploited, the attacker can inject malicious code into configuration fields, potentially running arbitrary script code within the interface or accessing sensitive information displayed in the user's browser.

Technical Details of CVE-2019-1956

The following are the technical details of this vulnerability:

Vulnerability Description

The vulnerability allows a remote attacker to perform a cross-site scripting (XSS) attack on the Cisco SPA112 2-Port Phone Adapter through its web-based interface.

Affected Systems and Versions

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

Exploitation Mechanism

To exploit this vulnerability, an authenticated attacker injects malicious code into configuration fields, taking advantage of the lack of input validation in the web interface.

Mitigation and Prevention

To address CVE-2019-1956, consider the following steps:

Immediate Steps to Take

Implement input validation mechanisms in the web interface to prevent XSS attacks.
Regularly monitor and update the device's firmware to patch known vulnerabilities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Educate users on safe browsing practices and the risks of executing unknown scripts.

Patching and Updates

Apply security patches provided by Cisco to fix the vulnerability in the SPA112 2-Port Phone Adapter.