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GHSA-qqj3-g7mx-5p4w
No affected components available
Impact
This vulnerability affects NeuVector deployments only when the Report anonymous cluster data option is enabled. When this option is enabled, NeuVector sends anonymous telemetry data to the telemetry server at https://upgrades.neuvector-upgrade-responder.livestock.rancher.io.
In affected versions, NeuVector does not enforce TLS certificate verification when transmitting anonymous cluster data to the telemetry server. As a result, the communication channel is susceptible to man-in-the-middle (MITM) attacks, where an attacker could intercept or modify the transmitted data. Additionally, NeuVector loads the response of the telemetry server is loaded into memory without size limitation, which makes it vulnerable to a Denial of Service(DoS) attack.
The patched version includes the following security improvements:
- NeuVector now verifies the telemetry server’s
TLS certificate chainandhostnameduring the handshake process. This ensures that all telemetry communications occur over a trusted and verified channel. - NeuVector limits the telemetry server’s response to
256 bytes, mitigating the risk of memory exhaustion and DoS attacks.
These security enhancements are enabled by default and require no user action.
Patches
Patched versions include release v5.4.7 and above.
Workarounds
If you cannot update to a patched version, you can temporarily disable the Report anonymous cluster data, which is enabled by default in NeuVector. To change this setting, go to Settings → Configuration → Report anonymous cluster data in the NeuVector UI.
Disabling this option prevents NeuVector from sending telemetry data to the telemetry server, which helps mitigate this vulnerability.
References
If you have any questions or comments about this advisory:
- Reach out to the SUSE Rancher Security team for security related inquiries.
- Open an issue in the NeuVector repository.
- Verify with our support matrix and product support lifecycle.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data. There is a high impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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