BIT-envoy-2023-27491

    Dashboard / Vulnerabilities / BIT-envoy-2023-27491

    BIT-envoy-2023-27491

    Published: 6 Mar 2024Last Modified: 8 Sept 2026

    Summary: Envoy forwards invalid Http2/Http3 downstream headers

    Details: Envoy is an open source edge and service proxy designed for cloud-native applications. Compliant HTTP/1 service should reject malformed request lines. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, There is a possibility that non compliant HTTP/1 service may allow malformed requests, potentially leading to a bypass of security policies. This issue is fixed in versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9.

    References: https://datatracker.ietf.org/doc/html/rfc9113#section-8.3, https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1, https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp, https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2, https://nvd.nist.gov/vuln/detail/CVE-2023-27491

    Affected packages

    Package

    Name: envoy

    Purl: pkg:bitnami/envoy

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.22.9

    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-2023-27491 | CVE-DB