CVE-2022-29224

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    CVE-2022-29224

    Published: 9 Jun 2022Last Modified: 12 Aug 2026

    Summary: Segmentation fault leading to crash in Envoy

    Details: Envoy is a cloud-native high-performance proxy. Versions of envoy prior to 1.22.1 are subject to a segmentation fault in the GrpcHealthCheckerImpl. Envoy can perform various types of upstream health checking. One of them uses gRPC. Envoy also has a feature which can “hold” (prevent removal) upstream hosts obtained via service discovery until configured active health checking fails. If an attacker controls an upstream host and also controls service discovery of that host (via DNS, the EDS API, etc.), an attacker can crash Envoy by forcing removal of the host from service discovery, and then failing the gRPC health check request. This will crash Envoy via a null pointer dereference. Users are advised to upgrade to resolve this vulnerability. Users unable to upgrade may disable gRPC health checking and/or replace it with a different health checking type as a mitigation.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/29xxx/CVE-2022-29224.json, https://github.com/envoyproxy/envoy/security/advisories/GHSA-m4j9-86g3-8f49, https://nvd.nist.gov/vuln/detail/CVE-2022-29224, https://github.com/envoyproxy/envoy/commit/9b1c3962172a972bc0359398af6daa3790bb59db

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -ae27fb5280d30e1400b7e9c9cbd448bfcd4ad9f5

    Affected versions

    v1.22.0

    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
    CVE-2022-29224 | CVE-DB