Cilium up to 1.13.16/1.14.11/1.15.5 information disclosure

Summaryinfo

A vulnerability was found in Cilium up to 1.13.16/1.14.11/1.15.5. It has been rated as problematic. The impacted element is an unknown function. This manipulation causes information disclosure. The identification of this vulnerability is CVE-2024-37307. The attack can only be executed locally. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Cilium up to 1.13.16/1.14.11/1.15.5 and classified as problematic. Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Starting in version 1.13.0 and prior to versions 1.13.7, 1.14.12, and 1.15.6, the output of `cilium-bugtool` can contain sensitive data when the tool is run (with the `--envoy-dump` flag set) against Cilium deployments with the Envoy proxy enabled. Users of the TLS inspection, Ingress with TLS termination, Gateway API with TLS termination, and Kafka network policies with API key filtering features are affected. The sensitive data includes the CA certificate, certificate chain, and private key used by Cilium HTTP Network Policies, and when using Ingress/Gateway API and the API keys used in Kafka-related network policy. `cilium-bugtool` is a debugging tool that is typically invoked manually and does not run during the normal operation of a Cilium cluster. This issue has been patched in Cilium v1.15.6, v1.14.12, and v1.13.17. There is no workaround to this issue.

The advisory is shared at github.com. This vulnerability is known as CVE-2024-37307 since 06/05/2024. The exploitation appears to be easy. An attack has to be approached locally. Additional levels of successful authentication are needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

Upgrading to version 1.13.17, 1.14.12 or 1.15.6 eliminates this vulnerability. Applying the patch 0191b1ebcfdd61cefd06da0315a0e7d504167407 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• Cilium

Version

• 1.13.0
• 1.13.1
• 1.13.2
• 1.13.3
• 1.13.4
• 1.13.5
• 1.13.6
• 1.13.7
• 1.13.8
• 1.13.9
• 1.13.10
• 1.13.11
• 1.13.12
• 1.13.13
• 1.13.14
• 1.13.15
• 1.13.16
• 1.14.0
• 1.14.1
• 1.14.2
• 1.14.3
• 1.14.4
• 1.14.5
• 1.14.6
• 1.14.7
• 1.14.8
• 1.14.9
• 1.14.10
• 1.14.11
• 1.15.0
• 1.15.1
• 1.15.2
• 1.15.3
• 1.15.4
• 1.15.5

License

• open-source

Website

• Product: https://github.com/cilium/cilium/

CPE 2.3info

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CPE 2.2info

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