rhsa-2015_1925
Vulnerability from csaf_redhat
Published
2015-10-22 16:41
Modified
2024-11-22 09:31
Summary
Red Hat Security Advisory: kvm security update

Notes

Topic
Updated kvm packages that fix one security issue are now available for Red Hat Enterprise Linux 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. A heap buffer overflow flaw was found in the way QEMU's NE2000 NIC emulation implementation handled certain packets received over the network. A privileged user inside a guest could use this flaw to crash the QEMU instance (denial of service) or potentially execute arbitrary code on the host. (CVE-2015-5279) Red Hat would like to thank Qinghao Tang of QIHU 360 Inc. for reporting this issue. All kvm users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. Note: The procedure in the Solution section must be performed before this update will 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.


To clipboard 

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        "text": "Updated kvm packages that fix one security issue are now available for Red\nHat Enterprise Linux 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.",
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        "text": "KVM (Kernel-based Virtual Machine) is a full virtualization solution for\nLinux on AMD64 and Intel 64 systems.\n\nA heap buffer overflow flaw was found in the way QEMU\u0027s NE2000 NIC\nemulation implementation handled certain packets received over the network.\nA privileged user inside a guest could use this flaw to crash the QEMU\ninstance (denial of service) or potentially execute arbitrary code on\nthe host. (CVE-2015-5279)\n\nRed Hat would like to thank Qinghao Tang of QIHU 360 Inc. for reporting\nthis issue.\n\nAll kvm users are advised to upgrade to these updated packages, which\ncontain a backported patch to correct this issue. Note: The procedure in\nthe Solution section must be performed before this update will take effect.",
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Qinghao Tang"
          ],
          "organization": "QIHU 360 Inc."
        }
      ],
      "cve": "CVE-2015-5279",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2015-08-24T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1256672"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A heap buffer overflow flaw was found in the way QEMU\u0027s NE2000 NIC emulation implementation handled certain packets received over the network. A privileged user inside a guest could use this flaw to crash the QEMU instance (denial of service) or potentially execute arbitrary code on the host.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "qemu: Heap overflow vulnerability in ne2000_receive() function",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue affects the versions of kvm and xen packages as shipped with Red Hat Enterprise Linux 5.\n\nThis issue affects the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6.\n\nThis issue affects the Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.\n\nThis issue does not affect the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 7.\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.",
          "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": {
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      "references": [
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2015-5279"
        },
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          "category": "external",
          "summary": "RHBZ#1256672",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1256672"
        },
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2015-5279",
          "url": "https://www.cve.org/CVERecord?id=CVE-2015-5279"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2015-5279",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-5279"
        }
      ],
      "release_date": "2015-09-15T00:00:00+00:00",
      "remediations": [
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          "category": "vendor_fix",
          "date": "2015-10-22T16:41:34+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\n\nThe following procedure must be performed before this update will take\neffect:\n\n1) Stop all KVM guest virtual machines.\n\n2) Either reboot the hypervisor machine or, as the root user, remove (using\n\"modprobe -r [module]\") and reload (using \"modprobe [module]\") all of the\nfollowing modules which are currently running (determined using \"lsmod\"):\nkvm, ksm, kvm-intel or kvm-amd.\n\n3) Restart the KVM guest virtual machines.",
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            "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": [
            "5Client-VT-5.11.Z:kmod-kvm-0:83-274.el5_11.x86_64",
            "5Client-VT-5.11.Z:kmod-kvm-debug-0:83-274.el5_11.x86_64",
            "5Client-VT-5.11.Z:kvm-0:83-274.el5_11.src",
            "5Client-VT-5.11.Z:kvm-0:83-274.el5_11.x86_64",
            "5Client-VT-5.11.Z:kvm-debuginfo-0:83-274.el5_11.x86_64",
            "5Client-VT-5.11.Z:kvm-qemu-img-0:83-274.el5_11.x86_64",
            "5Client-VT-5.11.Z:kvm-tools-0:83-274.el5_11.x86_64",
            "5Server-VT-5.11.Z:kmod-kvm-0:83-274.el5_11.x86_64",
            "5Server-VT-5.11.Z:kmod-kvm-debug-0:83-274.el5_11.x86_64",
            "5Server-VT-5.11.Z:kvm-0:83-274.el5_11.src",
            "5Server-VT-5.11.Z:kvm-0:83-274.el5_11.x86_64",
            "5Server-VT-5.11.Z:kvm-debuginfo-0:83-274.el5_11.x86_64",
            "5Server-VT-5.11.Z:kvm-qemu-img-0:83-274.el5_11.x86_64",
            "5Server-VT-5.11.Z:kvm-tools-0:83-274.el5_11.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "qemu: Heap overflow vulnerability in ne2000_receive() function"
    }
  ]
}


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