CVE-2019-9946

    Dashboard / Vulnerabilities / CVE-2019-9946

    CVE-2019-9946

    Published: 2 Apr 2019Last Modified: 7 Aug 2026

    Summary:

    Details: Cloud Native Computing Foundation (CNCF) CNI (Container Networking Interface) 0.7.4 has a network firewall misconfiguration which affects Kubernetes. The CNI 'portmap' plugin, used to setup HostPorts for CNI, inserts rules at the front of the iptables nat chains; which take precedence over the KUBE- SERVICES chain. Because of this, the HostPort/portmap rule could match incoming traffic even if there were better fitting, more specific service definition rules like NodePorts later in the chain. The issue is fixed in CNI 0.7.5 and Kubernetes 1.11.9, 1.12.7, 1.13.5, and 1.14.0.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCN66VYB3XS76SYH567SO7N3I254JOCT/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGOOWAELGH3F7OXRBPH3HCNZELNLXYTW/, https://access.redhat.com/errata/RHBA-2019:0862, https://github.com/containernetworking/plugins/pull/269#issuecomment-477683272, https://security.netapp.com/advisory/ntap-20190416-0002/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -a62711a5da7a2dc2eb93eac47e103738ad923fd6

    Affected versions

    v0.7.4
    v0.7.3
    v0.7.2
    v0.7.1
    v0.7.0
    v0.7.0-rc2
    v0.7.0-rc1

    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