BIT-envoy-2024-23324

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    BIT-envoy-2024-23324

    Published: 6 Mar 2024Last Modified: 8 Sept 2026

    Summary: Envoy ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata

    Details: Envoy is a high-performance edge/middle/service proxy. External authentication can be bypassed by downstream connections. Downstream clients can force invalid gRPC requests to be sent to ext_authz, circumventing ext_authz checks when failure_mode_allow is set to true. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

    References: https://github.com/envoyproxy/envoy/commit/29989f6cc8bfd8cd2ffcb7c42711eb02c7a5168a, https://github.com/envoyproxy/envoy/security/advisories/GHSA-gq3v-vvhj-96j6, https://nvd.nist.gov/vuln/detail/CVE-2024-23324

    Affected packages

    Package

    Name: envoy

    Purl: pkg:bitnami/envoy

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 1.26.0
    Fixed -1.26.7

    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-envoy-2024-23324 | CVE-DB