Overview
The cybersecurity world has recently been alerted to a critical vulnerability, CVE-2024-11186, that affects the Arista CloudVision Portal products when run on-premise. This vulnerability, due to improper access controls, could enable a malicious authenticated user to execute broader actions on managed EOS devices than intended. This situation is particularly grave because it has the potential to cause system compromise or data leakage. The issue is of utmost importance to organizations using Arista’s CloudVision on-premise as it could lead to unauthorized access and manipulation of sensitive data.
Vulnerability Summary
CVE ID: CVE-2024-11186
Severity: Critical, CVSS score 10.0
Attack Vector: Network
Privileges Required: Low
User Interaction: Required
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Arista CloudVision Portal | All on-premise versions prior to the patch
How the Exploit Works
The exploit takes advantage of improper access controls in the CloudVision portal. A malicious user, once authenticated, can potentially manipulate the EOS devices’ settings or access sensitive information. The exploit could allow unauthorized access to device configurations, network settings, and potentially sensitive data stored or transmitted through these devices. This vulnerability is particularly concerning because it enables a malicious user to gain control over managed EOS devices, which can lead to severe consequences such as system compromise or data leakage.
Conceptual Example Code
This is a conceptual example of how a malicious authenticated user might exploit the vulnerability:
# Assumed authenticated session
$ curl -X POST "http://target.example.com/api/eos-config" \
-H "Content-Type: application/json" \
-d '{
"config": {
"command": "config t",
"action": "configure terminal",
"parameter": "no ip access-list extended ACL-IN"
}
}'In this example, the command removes an IP access list, potentially opening up the network for further exploitation.
It is worth noting that this is a conceptual example and the actual exploit might differ based on the specific configurations and settings of the EOS devices.
How to Mitigate
The recommended mitigation is to apply the vendor patch as soon as possible. In case the patch cannot be applied immediately, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may serve as a temporary mitigation. These tools can help monitor network traffic and detect any suspicious activities that might indicate an attempted exploit of this vulnerability. Regularly monitoring system logs for any unusual activities can also aid in early detection.