CVE-2019-1838 : Security Advisory and Response

A vulnerability in the web-based management interface of Cisco Application Policy Infrastructure Controller (APIC) could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack.

Understanding CVE-2019-1838

This CVE involves a flaw in the web-based management interface of Cisco APIC that could be exploited by a remote attacker to perform a cross-site scripting attack.

What is CVE-2019-1838?

The vulnerability arises from inadequate validation of user input in the web-based management interface, potentially leading to a cross-site scripting attack.

The Impact of CVE-2019-1838

An attacker with authenticated access could manipulate the interface to execute arbitrary script code and access sensitive information.
Successful exploitation could result in a cross-site scripting attack against a user of the affected device.

Technical Details of CVE-2019-1838

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The flaw allows a remote attacker to conduct a cross-site scripting attack through the web-based management interface.

Affected Systems and Versions

Product: Cisco Application Policy Infrastructure Controller (APIC)
Vendor: Cisco
Versions affected: Less than 4.1(1i)

Exploitation Mechanism

Attacker needs authenticated access to manipulate the interface and convince a user to click on a crafted link.

Mitigation and Prevention

Protecting against and mitigating the impact of CVE-2019-1838.

Immediate Steps to Take

Update to software version 14.1(1i) that includes a fix for the vulnerability.
Educate users to be cautious of clicking on suspicious links.

Long-Term Security Practices

Regularly monitor and update security patches for the APIC.

Patching and Updates

Stay informed about security advisories and apply patches promptly.