CVE-2020-3340 : What You Need to Know

Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerabilities

Understanding CVE-2020-3340

Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker with administrative credentials to conduct a cross-site scripting (XSS) attack against a user of the interface.

What is CVE-2020-3340?

The vulnerabilities in Cisco ISE are a result of insufficient validation of user-supplied input processed by the web-based management interface. An attacker could inject malicious code into specific pages, potentially executing arbitrary script code or accessing sensitive information.

The Impact of CVE-2020-3340

These vulnerabilities could be exploited by an attacker with valid administrative credentials, leading to the execution of arbitrary script code within the interface or access to sensitive browser-based data.

Technical Details of CVE-2020-3340

Vulnerability Description

The vulnerability allows an authenticated attacker to perform a cross-site scripting attack through the web-based management interface of Cisco ISE.

Affected Systems and Versions

Product: Cisco Identity Services Engine Software
Vendor: Cisco
Version: Not applicable

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: High
User Interaction: Required
Scope: Changed
CVSS Base Score: 4.8 (Medium)
Vector String: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Mitigation and Prevention

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Monitor Cisco's security advisories for any new information.

Long-Term Security Practices

Regularly review and update access controls and user privileges.
Conduct security training to educate users on identifying and avoiding phishing attacks.

Patching and Updates

Cisco may release patches or updates to address these vulnerabilities. Stay informed through official channels for remediation steps.