CVE-2024-23327

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    CVE-2024-23327

    Published: 9 Feb 2024Last Modified: 28 Oct 2026

    Summary: Crash in proxy protocol when command type of LOCAL in Envoy

    Details: Envoy is a high-performance edge/middle/service proxy. When PPv2 is enabled both on a listener and subsequent cluster, the Envoy instance will segfault when attempting to craft the upstream PPv2 header. This occurs when the downstream request has a command type of LOCAL and does not have the protocol block. This issue has been addressed in releases 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/CVEProject/cvelistV5/tree/main/cves/2024/23xxx/CVE-2024-23327.json, https://github.com/envoyproxy/envoy/security/advisories/GHSA-4h5x-x9vh-m29j, https://nvd.nist.gov/vuln/detail/CVE-2024-23327, https://github.com/envoyproxy/envoy/commit/63895ea8e3cca9c5d3ab4c5c128ed1369969d54a

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 51964702956d64adcd1df6b8ea132e863fe78e74
    Fixed -a0e580408ef4568b0a16c6663b6d8ae0c46aba6a

    Affected versions

    v1.29.0

    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