Overview
This report presents a detailed analysis of the CVE-2024-9448 vulnerability. The vulnerability is present in Arista EOS platforms that have Traffic Policies configured. The severity of this vulnerability is high as it can potentially lead to system compromise or data leakage. The issue is significant as affected systems could deliver packets to unexpected destinations, bypassing established rules.
Vulnerability Summary
CVE ID: CVE-2024-9448
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Arista EOS | All versions with Traffic Policies configured
How the Exploit Works
The exploit takes advantage of the vulnerability by sending untagged packets to the affected Arista EOS platform. These untagged packets are not processed by Traffic Policy rules as they should be. If the rule was set to drop the packet, this would not occur, and instead, the packet would be forwarded as if no such rule existed. This can lead to packets being delivered to unexpected destinations, bypassing the network’s security measures.
Conceptual Example Code
A conceptual example of how this vulnerability might be exploited is as follows:
echo -n "malicious_payload" > payload.txt
nc -u -p 12345 target.example.com < payload.txtIn this conceptual example, an attacker constructs a malicious payload and sends it as an untagged packet. The untagged packet bypasses Traffic Policy rules and gets delivered to an unexpected destination, potentially compromising the system or leading to data leakage.
Recommendations
To mitigate the CVE-2024-9448 vulnerability, users are advised to apply the vendor patch as soon as it is available. In the interim, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. Users should also consider reviewing and updating their security policies to better protect against untagged packets.
