BIT-cilium-operator-2023-34242

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    BIT-cilium-operator-2023-34242

    Published: 15 May 2024Last Modified: 8 Sept 2026

    Summary: Cilium vulnerable to information leakage via incorrect ReferenceGrant handling

    Details: Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to version 1.13.4, when Gateway API is enabled in Cilium, the absence of a check on the namespace in which a ReferenceGrant is created could result in Cilium unintentionally gaining visibility of secrets (including certificates) and services across namespaces. An attacker on an affected cluster can leverage this issue to use cluster secrets that should not be visible to them, or communicate with services that they should not have access to. Gateway API functionality is disabled by default. This vulnerability is fixed in Cilium release 1.13.4. As a workaround, restrict the creation of `ReferenceGrant` resources to admin users by using Kubernetes RBAC.

    References: https://github.com/cilium/cilium/releases/tag/v1.13.4, https://github.com/cilium/cilium/security/advisories/GHSA-r7wr-4w5q-55m6, https://nvd.nist.gov/vuln/detail/CVE-2023-34242

    Affected packages

    Package

    Name: cilium-operator

    Purl: pkg:bitnami/cilium-operator

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.13.4

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    BIT-cilium-operator-2023-34242 | CVE-DB