Cisco Webex Meetings Services HTTP Cache Poisoning Vulnerability

TL;DR 📌

A medium-severity HTTP cache poisoning vulnerability has been identified in Cisco Webex Meetings Services. No user action is required as Cisco has addressed the issue in the cloud-based service.

What happened 🕵️‍♂️

A vulnerability in the client join services of Cisco Webex Meetings could allow an unauthenticated, remote attacker to manipulate cached HTTP responses. This issue arises from improper handling of malicious HTTP requests, potentially leading to incorrect HTTP responses being returned to clients. Fortunately, Cisco has already resolved this vulnerability, and no customer action is necessary to update on-premises software or devices.

Affected products 🖥️

This vulnerability specifically affects Cisco Webex Meetings, which is a cloud-based service.

Fixed software 🔧

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

Workarounds 🧯

There are no workarounds available to address this vulnerability.

Risk in context 🎯

The vulnerability has a CVSS score of 4.3, indicating a medium severity level. While it poses a risk of HTTP cache poisoning, the fact that Cisco has already patched the issue and no user action is required mitigates the immediate threat.

Fast facts ⚡

• Advisory ID: cisco-sa-webex-cache-Q4xbkQBG
• CVSS Score: 4.3 (Medium)
• Vulnerability Type: HTTP Cache Poisoning
• Affected Product: Cisco Webex Meetings (cloud-based)
• Exploitation: No known public exploitation or announcements.

For leadership 🧭

The identified vulnerability in Cisco Webex Meetings Services could have allowed attackers to manipulate cached responses, but it has been effectively addressed by Cisco. As this is a cloud service, there is no need for additional action from your teams. It’s crucial to stay informed about such advisories to maintain the security posture of your organization. For further details, refer to the Cisco Security Vulnerability Policy.