CVE-2019-12667 : Vulnerability Insights and Analysis

Cisco IOS XE Software Stored Cross-Site Scripting Vulnerability

Understanding CVE-2019-12667

This CVE involves a stored cross-site scripting (XSS) vulnerability in Cisco IOS XE Software, potentially allowing attackers to execute arbitrary script code or access sensitive information.

What is CVE-2019-12667?

An authenticated, remote attacker could exploit a flaw in the web framework code of Cisco IOS XE Software to perform a stored XSS attack.
The vulnerability arises from inadequate validation of certain parameters passed to the software's web server.

The Impact of CVE-2019-12667

Attackers could execute arbitrary script code within the affected web interface's context or gain access to sensitive information accessible through the user's browser.
The base severity score is 5.5, categorizing it as a medium severity vulnerability.

Technical Details of CVE-2019-12667

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows attackers to conduct a stored XSS attack against users of the affected software's web interface.
It results from insufficient input validation of parameters passed to the web server.

Affected Systems and Versions

Product: Cisco IOS XE Software 16.4.1
Vendor: Cisco
Version: Unspecified

Exploitation Mechanism

Attackers can manipulate users into accessing harmful links or intercept user requests to insert malicious code.
Successful exploitation could lead to executing arbitrary script code or accessing sensitive information.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate action and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Cisco promptly.
Educate users about phishing attacks and suspicious links.
Monitor web traffic for any signs of XSS attacks.

Long-Term Security Practices

Implement secure coding practices to prevent XSS vulnerabilities.
Regularly update and patch software to address security flaws.

Patching and Updates

Cisco may release patches to address this vulnerability; ensure timely installation to mitigate risks.