Cisco Secure Firewall Management Center Software Cross-Site Scripting Vulnerability

TL;DR 📌

A medium severity cross-site scripting (XSS) vulnerability has been identified in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software. This flaw could allow unauthenticated remote attackers to execute arbitrary scripts in the context of the interface. There are no workarounds available, but Cisco has released software updates to address this issue.

What happened 🕵️‍♂️

Cisco has reported a vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software. This vulnerability arises from insufficient validation of user-supplied input, allowing attackers to execute arbitrary script code or access sensitive browser-based information through crafted input.

Affected products 🖥️

The vulnerability specifically affects Cisco Secure FMC Software. Cisco has confirmed that this issue does not impact Cisco Secure Firewall Adaptive Security Appliance (ASA) Software or Cisco Secure Firewall Threat Defense (FTD) Software.

Fixed software 🔧

Upgrade to the first fixed release in your train (or later):

Workarounds 🧯

There are no workarounds available to mitigate this vulnerability.

Risk in context 🎯

The vulnerability has a CVSS score of 6.1, indicating a medium risk level. While it does not require authentication for exploitation, the potential for executing scripts could lead to unauthorized access to sensitive information. Organizations should prioritize applying the available updates to mitigate risks.

Fast facts ⚡

• Vulnerability Type: Cross-Site Scripting (XSS)
• CVSS Score: 6.1 (Medium)
• Exploitability: Unauthenticated remote access
• Workarounds: None available
• Affected Product: Cisco Secure FMC Software

For leadership 🧭

This vulnerability poses a Medium risk to our organization, with a CVSS score of 6.1. It is exploitable remotely without authentication, which could lead to unauthorized script execution and access to sensitive information. Immediate remediation is advised, with a request to patch within 7 days given the availability of fixed software. The operational impact is expected to be minimal, requiring a brief maintenance window with no anticipated configuration drift.

Now: Review and prioritize patching Cisco Secure FMC Software.
Next: Schedule the maintenance window for updates.
Later: Monitor for any related security advisories or updates from Cisco.