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CVE-2024-37307

Cilium leaks sensitive information in cilium-bugtool

MEDIUM
6.5
CVSS Score
Published: June 13, 2024 at 04:09 PM UTC
Updated: June 17, 2026 at 07:38 AM UTC
1 product affected across 1 vendorCilium

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cilium· Cilium
95%
v < 1.13.17v < 1.14.12v < 1.15.61.13.0 ≤ v < 1.13.171.14.0 ≤ v < 1.14.121.15.0 ≤ v < 1.15.61.13.01.14.01.15.0
Affected range stops below 1.13.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.14.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.15.6, so it looks safe — our inference, not a vendor statement

References (7)

x_refsource_MISCPatch
Source: [email protected]
https://github.com/cilium/cilium/commit/0191b1ebcfdd61cefd06da0315a0e7d504167407
x_refsource_MISCPatch
Source: [email protected]
https://github.com/cilium/cilium/commit/224e288a5bf40d0bb0f16c9413693b319633431a
x_refsource_MISCPatch
Source: [email protected]
https://github.com/cilium/cilium/commit/9299c0fd0024e33397cffc666ff851e82af28741
x_refsource_MISCPatch
Source: [email protected]
https://github.com/cilium/cilium/commit/958d7b77274bf2c272d8cdfd812631d644250653
x_refsource_MISCPatch
Source: [email protected]
https://github.com/cilium/cilium/commit/9eb25ba40391a9b035d7e66401b862818f4aac4b
x_refsource_MISCPatch
Source: [email protected]
https://github.com/cilium/cilium/commit/bf9a1ae1b2d2b2c9cca329d7aa96aa4858032a61
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://github.com/cilium/cilium/security/advisories/GHSA-wh78-7948-358j

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-200NVD-CWE-noinfo

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