rhsa-2015_1088
Vulnerability from csaf_redhat
Published
2015-06-10 15:00
Modified
2024-11-22 09:12
Summary
Red Hat Security Advisory: qemu-kvm-rhev security update

Notes

Topic
Updated qemu-kvm-rhev packages that fix one security issue are now available for Red Hat Enterprise Virtualization 3.5. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.
Details
KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the user-space component for running virtual machines using KVM. A flaw was found in the way QEMU's AMD PCnet Ethernet emulation handled multi-TMD packets with a length above 4096 bytes. A privileged guest user in a guest with an AMD PCNet ethernet card enabled could potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process. (CVE-2015-3209) Red Hat would like to thank Matt Tait of Google's Project Zero security team for reporting this issue. All qemu-kvm-rhev users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.
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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{
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      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
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        "url": "https://www.first.org/tlp/"
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    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Updated qemu-kvm-rhev packages that fix one security issue are now\navailable for Red Hat Enterprise Virtualization 3.5.\n\nRed Hat Product Security has rated this update as having Important security\nimpact. A Common Vulnerability Scoring System (CVSS) base score, which\ngives a detailed severity rating, is available from the CVE link in the\nReferences section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "KVM (Kernel-based Virtual Machine) is a full virtualization solution for\nLinux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the\nuser-space component for running virtual machines using KVM.\n\nA flaw was found in the way QEMU\u0027s AMD PCnet Ethernet emulation handled\nmulti-TMD packets with a length above 4096 bytes. A privileged guest user\nin a guest with an AMD PCNet ethernet card enabled could potentially use\nthis flaw to execute arbitrary code on the host with the privileges of the\nhosting QEMU process. (CVE-2015-3209)\n\nRed Hat would like to thank Matt Tait of Google\u0027s Project Zero security\nteam for reporting this issue.\n\nAll qemu-kvm-rhev users are advised to upgrade to these updated packages,\nwhich contain a backported patch to correct this issue. After installing\nthis update, shut down all running virtual machines. Once all virtual\nmachines have shut down, start them again for this update to take effect.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "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.",
        "title": "Terms of Use"
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      }
    ],
    "title": "Red Hat Security Advisory: qemu-kvm-rhev security update",
    "tracking": {
      "current_release_date": "2024-11-22T09:12:35+00:00",
      "generator": {
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            "branches": [
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Matt Tait"
          ],
          "organization": "Google\u0027s Project Zero security team"
        }
      ],
      "cve": "CVE-2015-3209",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "discovery_date": "2015-05-20T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1225882"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the way QEMU\u0027s AMD PCnet Ethernet emulation handled multi-TMD packets with a length above 4096 bytes. A privileged guest user in a guest with an AMD PCNet ethernet card enabled could potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "qemu: pcnet: multi-tmd buffer overflow in the tx path",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue does not affect the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 7 as they do not enable the pcnet backend driver.\n\nThis issue does not affect the Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.\n\nThis issue affects the versions of the kvm and xen packages as shipped with Red Hat Enterprise Linux 5, the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6, and the Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3. Future updates for the respective releases may address this flaw.\n\nPlease note that AMD PCNet adapter has to be explicitly enabled per-guest as it is not enabled in default configuration and is not supported by Red Hat in Red Hat Enterprise Linux 6 (for a list of supported devices please consult https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization_Administration_Guide/sect-whitelist-device-options.html).",
          "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"
        }
      ],
      "product_status": {
        "fixed": [
          "6Server-RHEV-Agents:qemu-img-rhev-2:0.12.1.2-2.448.el6_6.4.x86_64",
          "6Server-RHEV-Agents:qemu-kvm-rhev-2:0.12.1.2-2.448.el6_6.4.src",
          "6Server-RHEV-Agents:qemu-kvm-rhev-2:0.12.1.2-2.448.el6_6.4.x86_64",
          "6Server-RHEV-Agents:qemu-kvm-rhev-debuginfo-2:0.12.1.2-2.448.el6_6.4.x86_64",
          "6Server-RHEV-Agents:qemu-kvm-rhev-tools-2:0.12.1.2-2.448.el6_6.4.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2015-3209"
        },
        {
          "category": "external",
          "summary": "RHBZ#1225882",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1225882"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2015-3209",
          "url": "https://www.cve.org/CVERecord?id=CVE-2015-3209"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2015-3209",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-3209"
        }
      ],
      "release_date": "2015-06-10T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2015-06-10T15:00:16+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "6Server-RHEV-Agents:qemu-img-rhev-2:0.12.1.2-2.448.el6_6.4.x86_64",
            "6Server-RHEV-Agents:qemu-kvm-rhev-2:0.12.1.2-2.448.el6_6.4.src",
            "6Server-RHEV-Agents:qemu-kvm-rhev-2:0.12.1.2-2.448.el6_6.4.x86_64",
            "6Server-RHEV-Agents:qemu-kvm-rhev-debuginfo-2:0.12.1.2-2.448.el6_6.4.x86_64",
            "6Server-RHEV-Agents:qemu-kvm-rhev-tools-2:0.12.1.2-2.448.el6_6.4.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2015:1088"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "HIGH",
            "accessVector": "ADJACENT_NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 6.5,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:A/AC:H/Au:S/C:C/I:C/A:C",
            "version": "2.0"
          },
          "products": [
            "6Server-RHEV-Agents:qemu-img-rhev-2:0.12.1.2-2.448.el6_6.4.x86_64",
            "6Server-RHEV-Agents:qemu-kvm-rhev-2:0.12.1.2-2.448.el6_6.4.src",
            "6Server-RHEV-Agents:qemu-kvm-rhev-2:0.12.1.2-2.448.el6_6.4.x86_64",
            "6Server-RHEV-Agents:qemu-kvm-rhev-debuginfo-2:0.12.1.2-2.448.el6_6.4.x86_64",
            "6Server-RHEV-Agents:qemu-kvm-rhev-tools-2:0.12.1.2-2.448.el6_6.4.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "qemu: pcnet: multi-tmd buffer overflow in the tx path"
    }
  ]
}


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