CVE-2017-3840 : What You Need to Know

Cisco Secure Access Control System (ACS) has a vulnerability in its web interface that allows a remote attacker to redirect users to malicious web pages without authentication.

Understanding CVE-2017-3840

This CVE identifies an Open Redirect Vulnerability in Cisco Secure Access Control System (ACS) versions.

What is CVE-2017-3840?

The flaw in the web interface of Cisco Secure Access Control System (ACS) enables unauthorized remote attackers to redirect users to harmful web pages, known as an Open Redirect Vulnerability.

The Impact of CVE-2017-3840

Attackers can exploit this vulnerability to trick users into visiting malicious websites, potentially leading to further attacks.

Technical Details of CVE-2017-3840

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in the web interface of Cisco Secure Access Control System (ACS) allows unauthenticated remote attackers to perform open redirects, exposing users to malicious websites.

Affected Systems and Versions

Product: Cisco Secure Access Control System
Affected Version: 5.8(2.5)

Exploitation Mechanism

Remote attackers can exploit the flaw in the web interface to redirect users to harmful web pages without authentication.

Mitigation and Prevention

Protecting systems from CVE-2017-3840 is crucial to prevent potential security risks.

Immediate Steps to Take

Apply security patches provided by Cisco promptly.
Monitor network traffic for any suspicious activities.
Educate users about phishing techniques to prevent falling for malicious redirects.

Long-Term Security Practices

Regularly update and patch all software and systems to address known vulnerabilities.
Implement strong access controls and authentication mechanisms to prevent unauthorized access.

Patching and Updates

Cisco may release security advisories and patches to address the vulnerability; ensure timely implementation to secure systems.