CVE-2021-1582 : Vulnerability Insights and Analysis

A stored cross-site scripting vulnerability has been identified in the web UI of Cisco Application Policy Infrastructure Controller (APIC) and Cisco Cloud APIC. This could allow an authenticated remote attacker to execute arbitrary script code or access sensitive information on the affected system.

Understanding CVE-2021-1582

This section will cover the details of the CVE-2021-1582 vulnerability, its impact, technical details, and mitigation steps.

What is CVE-2021-1582?

CVE-2021-1582 is a stored cross-site scripting vulnerability in the web UI of Cisco Application Policy Infrastructure Controller (APIC) and Cisco Cloud APIC. An authenticated attacker can exploit this vulnerability by injecting malicious code into the web interface, potentially leading to the execution of arbitrary scripts or access to sensitive information.

The Impact of CVE-2021-1582

The impact of this vulnerability is rated as medium with a CVSS base score of 5.4. If successfully exploited, an attacker could execute arbitrary script code within the web-based interface or gain access to browser-based sensitive information.

Technical Details of CVE-2021-1582

Below are the technical details of the CVE-2021-1582 vulnerability.

Vulnerability Description

The vulnerability arises due to improper input validation in the web UI, allowing an authenticated attacker to perform a stored cross-site scripting attack.

Affected Systems and Versions

Affected Product: Cisco Application Policy Infrastructure Controller (APIC)
Vendor: Cisco
Versions: Not available

Exploitation Mechanism

An authenticated attacker sends malicious input to the web UI, exploiting the lack of proper input validation and executing arbitrary script code.

Mitigation and Prevention

Protect your system from CVE-2021-1582 using the following steps.

Immediate Steps to Take

Regularly monitor and apply security updates from Cisco.
Implement proper input validation mechanisms in web applications.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Educate users about safe browsing practices and identifying phishing attempts.

Patching and Updates

Refer to the Cisco Advisory for patching instructions and update your systems to the latest version.