CVE-2023-20206 Explained : Impact and Mitigation

This CVE-2023-20657 pertains to multiple vulnerabilities found in the web-based management interface of Cisco Firepower Management Center (FMC) Software. These vulnerabilities could potentially allow an unauthenticated, remote attacker to execute a stored cross-site scripting (XSS) attack against a user of the interface of an affected device.

Understanding CVE-2023-20657

These vulnerabilities originate from inadequate validation of user-supplied input by the web-based management interface, enabling attackers to insert crafted input into various data fields in an affected interface. Successful exploitation of these vulnerabilities could lead to the execution of arbitrary script code in the context of the interface or unauthorized access to sensitive, browser-based information. In certain cases, it may also result in a temporary disruption to portions of the FMC Dashboard.

What is CVE-2023-20657?

CVE-2023-20657 is a security vulnerability present in Cisco Firepower Management Center (FMC) Software that allows remote attackers to conduct stored cross-site scripting (XSS) attacks through the web-based management interface.

The Impact of CVE-2023-20657

The impact of CVE-2023-20657 could potentially result in unauthorized execution of script code within the interface context, unauthorized access to sensitive information, and disruption to the availability of parts of the FMC Dashboard.

Technical Details of CVE-2023-20657

The vulnerability description involves the insufficient validation of user-supplied input by the web-based management interface of Cisco Firepower Management Center (FMC) Software, enabling stored cross-site scripting (XSS) attacks.

Vulnerability Description

The vulnerability allows an unauthenticated, remote attacker to insert crafted input into data fields, leading to the execution of arbitrary script code and access to sensitive information within the interface.

Affected Systems and Versions

Various versions of Cisco Firepower Management Center (FMC) Software ranging from 6.6.0 to 7.3.1.1 are affected by this vulnerability.

Exploitation Mechanism

The attacker can exploit these vulnerabilities by inserting malicious input into different data fields on the affected interface, thereby executing unauthorized script code and accessing sensitive information.

Mitigation and Prevention

To address CVE-2023-20657, users and organizations should take immediate steps to mitigate the risks associated with these vulnerabilities in Cisco Firepower Management Center (FMC) Software.

Immediate Steps to Take

Apply security updates and patches provided by Cisco to fix the vulnerabilities.
Monitor network traffic and system logs for any suspicious activities.
Implement strong access controls and regular security assessments.

Long-Term Security Practices

Regularly update and maintain software to protect against known vulnerabilities.
Conduct security training and awareness programs for staff members.
Implement network segmentation and firewalls to limit the impact of potential attacks.

Patching and Updates

Cisco has released security advisories and patches related to this CVE. Users should apply the latest updates provided by Cisco to address the vulnerabilities and enhance the security of their systems.