CVE-2022-20833 : Security Advisory and Response

Multiple vulnerabilities in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack. These vulnerabilities are due to insufficient validation of user-supplied input by the interface, potentially enabling attackers to execute arbitrary script code or access sensitive information.

Understanding CVE-2022-20833

This CVE refers to multiple vulnerabilities in Cisco Firepower Management Center (FMC) Software that could be exploited by an authenticated, remote attacker to perform a stored cross-site scripting attack.

What is CVE-2022-20833?

The CVE-2022-20833 vulnerability pertains to flaws in the web-based management interface of Cisco FMC Software, allowing attackers to execute arbitrary script code or access sensitive information due to inadequate input validation.

The Impact of CVE-2022-20833

Successful exploitation of CVE-2022-20833 could lead to arbitrary script code execution within the interface, potentially disclosing sensitive information and causing temporary availability impacts on the FMC Dashboard.

Technical Details of CVE-2022-20833

Cisco Firepower Management Center (FMC) Software versions 6.1.0 to 7.1.0.2 are affected by these vulnerabilities. The risk arises from improper neutralization of user input, enabling stored cross-site scripting attacks. The Common Weakness Enumeration (CWE) type associated with this CVE is CWE-79.

Vulnerability Description

The vulnerabilities stem from the lack of proper validation of user inputs within the web-based management interface of Cisco Firepower Management Center Software, leading to stored cross-site scripting (XSS) attacks.

Affected Systems and Versions

All versions of Cisco Firepower Management Center (FMC) Software from 6.1.0 to 7.1.0.2 are affected by CVE-2022-20833, potentially putting these systems at risk of stored cross-site scripting attacks.

Exploitation Mechanism

Attackers can exploit these vulnerabilities by inserting crafted input into data fields of the affected interface, allowing them to execute malicious script code or access sensitive information.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-20833, affected users should take immediate steps, implement long-term security practices, and apply relevant patches and updates.

Immediate Steps to Take

Users should ensure that access to the web-based management interface of Cisco Firepower Management Center (FMC) Software is limited to trusted entities and keep an eye out for any unusual behavior or script code execution.

Long-Term Security Practices

Implement secure coding practices, conduct regular security audits, and provide security awareness training to prevent and detect similar vulnerabilities in the future.

Patching and Updates

Cisco has likely released patches or updates to address the vulnerabilities associated with CVE-2022-20833. It is crucial for affected users to promptly apply these patches to secure their systems and prevent potential exploitation.