rhsa-2019_0081
Vulnerability from csaf_redhat
Published
2019-01-16 17:53
Modified
2024-11-15 00:39
Summary
Red Hat Security Advisory: openvswitch security and bug fix update

Notes

Topic
An update for openvswitch is now available for Red Hat OpenStack Platform 13.0 (Queens). 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
Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic. Security Fix(es): * openvswitch: Mishandle of group mods in lib/ofp-util.c:parse_group_prop_ntr_selection_method() allows for assertion failure (CVE-2018-17204) * openvswitch: Error during bundle commit in ofproto/ofproto.c:ofproto_rule_insert__() allows for crash (CVE-2018-17205) * openvswitch: Buffer over-read in lib/ofp-actions.c:decode_bundle() (CVE-2018-17206) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * Previously, the first packet of a new connection using an OVN logical router was used to discover the MAC address of the destination. This resulted in the loss of the first packet on the new connection. This enhancement adds the capability to correctly queue the first packet of a new connection, which prevents the loss of that packet. (BZ#1600115)
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.


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        "text": "Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic.\n\nSecurity Fix(es):\n\n* openvswitch: Mishandle of group mods in lib/ofp-util.c:parse_group_prop_ntr_selection_method() allows for assertion failure (CVE-2018-17204)\n\n* openvswitch: Error during bundle commit in ofproto/ofproto.c:ofproto_rule_insert__() allows for crash (CVE-2018-17205)\n\n* openvswitch: Buffer over-read in lib/ofp-actions.c:decode_bundle() (CVE-2018-17206)\n\nFor more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.\n\nBug Fix(es):\n\n* Previously, the first packet of a new connection using an OVN logical router was used to discover the MAC address of the destination. This resulted in the loss of the first packet on the new connection. This \nenhancement adds the capability to correctly queue the first packet of a new connection, which prevents the loss of that packet. (BZ#1600115)",
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          "title": "Vulnerability description"
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          "category": "summary",
          "text": "openvswitch: Mishandle of group mods in lib/ofp-util.c:parse_group_prop_ntr_selection_method() allows for assertion failure",
          "title": "Vulnerability summary"
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        {
          "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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        {
          "category": "impact",
          "details": "Moderate"
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      ],
      "title": "openvswitch: Mishandle of group mods in lib/ofp-util.c:parse_group_prop_ntr_selection_method() allows for assertion failure"
    },
    {
      "cve": "CVE-2018-17205",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "discovery_date": "2018-09-21T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1632525"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "An issue was discovered in Open vSwitch (OvS), 2.7.x through 2.7.6, 2.8.x through 2.8.4, and 2.9.x through 2.9.2, where the ofproto_rule_insert__() function inside ofproto/ofproto.c is affected by an assertion failure under certain circumstances.\r\nA specially crafted flow update applied using the bundling feature of Open vSwitch could potentially cause the assertion failure, potentially leading to incorrect flow information being applied, or a denial of service.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "openvswitch: Error during bundle commit in ofproto/ofproto.c:ofproto_rule_insert__() allows for crash",
          "title": "Vulnerability summary"
        },
        {
          "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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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-17205"
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          "date": "2019-01-16T17:53:06+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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    },
    {
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        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1632528"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "An issue was discovered in Open vSwitch (OvS) 2.5.x through 2.5.5, 2.6.x through 2.6.3, 2.7.x through 2.7.6, 2.8.x through 2.8.4, and 2.9.x through 2.9.2 where the decode_bundle function inside lib/ofp-actions.c is affected by a buffer over-read issue during BUNDLE action decoding.\r\nA specially crafted flow update applied using the bundling feature of Open vSwitch could potentially cause a crash leading to a denial of service.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "openvswitch: Buffer over-read in lib/ofp-actions.c:decode_bundle()",
          "title": "Vulnerability summary"
        },
        {
          "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"
        }
      ],
      "product_status": {
        "fixed": [
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        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2018-17206"
        },
        {
          "category": "external",
          "summary": "RHBZ#1632528",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1632528"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2018-17206",
          "url": "https://www.cve.org/CVERecord?id=CVE-2018-17206"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-17206",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-17206"
        }
      ],
      "release_date": "2018-09-25T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2019-01-16T17:53:06+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2019:0081"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 4.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "products": [
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "openvswitch: Buffer over-read in lib/ofp-actions.c:decode_bundle()"
    }
  ]
}


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