rhsa-2020_2684
Vulnerability from csaf_redhat
Published
2020-06-23 14:27
Modified
2024-11-22 14:29
Summary
Red Hat Security Advisory: containernetworking-plugins security update

Notes

Topic
An update for containernetworking-plugins is now available for Red Hat Enterprise Linux 7 Extras. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
The Container Network Interface (CNI) project consists of a specification and libraries for writing plug-ins for configuring network interfaces in Linux containers, along with a number of supported plug-ins. CNI concerns itself only with network connectivity of containers and removing allocated resources when the container is deleted. Security Fix(es): * containernetworking/plugins: IPv6 router advertisements allow for MitM attacks on IPv4 clusters (CVE-2020-10749) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


To clipboard 

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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "the Kubernetes Product Security Committee"
          ]
        },
        {
          "names": [
            "Etienne Champetier"
          ],
          "summary": "Acknowledged by upstream."
        }
      ],
      "cve": "CVE-2020-10749",
      "cwe": {
        "id": "CWE-300",
        "name": "Channel Accessible by Non-Endpoint"
      },
      "discovery_date": "2020-05-08T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1833220"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A vulnerability was found in affected container networking implementations that allow malicious containers in Kubernetes clusters to perform man-in-the-middle (MitM) attacks. A malicious container can exploit this flaw by sending \u201crogue\u201d IPv6 router advertisements to the host or other containers, to redirect traffic to the malicious container.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "containernetworking/plugins: IPv6 router advertisements allow for MitM attacks on IPv4 clusters",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "In OpenShift Container Platform 4, the default network plugin, OpenShift SDN, and OVN Kubernetes, do not forward IPv6 traffic, making this vulnerability not exploitable. The affected code from containernetworking/plugins is however still included in these plugins, hence this vulnerability is rated Low for both OpenShift SDN and OVN-Kubernetes.\n\nIPv6 traffic is not forwarded by the OpenShift SDN in OpenShift Container Platform 3.11, making this vulnerability not exploitable. However, the affected code from containernetworking/plugins is still included in the atomic-openshift package, hence this vulnerability is rated Low for OpenShift Container Platform 3.11.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:2684"
        },
        {
          "category": "workaround",
          "details": "Prevent untrusted, non-privileged containers from running with CAP_NET_RAW.",
          "product_ids": [
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        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 6.0,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
            "7Server-EXTRAS-7.8:containernetworking-plugins-0:0.8.3-3.el7_8.ppc64le",
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "containernetworking/plugins: IPv6 router advertisements allow for MitM attacks on IPv4 clusters"
    }
  ]
}


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