rhsa-2010_0271
Vulnerability from csaf_redhat
Published
2010-03-29 12:00
Modified
2024-11-14 10:48
Summary
Red Hat Security Advisory: kvm security, bug fix and enhancement update

Notes

Topic
Updated kvm packages that fix one security issue, multiple bugs, and add enhancements are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team 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. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel. A flaw was found in the way QEMU-KVM handled erroneous data provided by the Linux virtio-net driver, used by guest operating systems. Due to a deficiency in the TSO (TCP segment offloading) implementation, a guest's virtio-net driver would transmit improper data to a certain QEMU-KVM process on the host, causing the guest to crash. A remote attacker could use this flaw to send specially-crafted data to a target guest system, causing that guest to crash. (CVE-2010-0741) Additionally, these updated packages include numerous bug fixes and enhancements. Refer to the KVM chapter of the Red Hat Enterprise Linux 5.5 Technical Notes for details: http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.5/html/Technical_Notes/kvm.html All KVM users should upgrade to these updated packages, which resolve this issue as well as fixing the bugs and adding the enhancements noted in the Technical Notes. 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.


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        "text": "Updated kvm packages that fix one security issue, multiple bugs, and add\nenhancements are now available for Red Hat Enterprise Linux 5.\n\nThe Red Hat Security Response Team has rated this update as having\nimportant security impact. A Common Vulnerability Scoring System (CVSS)\nbase score, which gives a detailed severity rating, is available from the\nCVE link in the References section.",
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        "text": "KVM (Kernel-based Virtual Machine) is a full virtualization solution for\nLinux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for\nthe standard Red Hat Enterprise Linux kernel.\n\nA flaw was found in the way QEMU-KVM handled erroneous data provided by\nthe Linux virtio-net driver, used by guest operating systems. Due to a\ndeficiency in the TSO (TCP segment offloading) implementation, a guest\u0027s\nvirtio-net driver would transmit improper data to a certain QEMU-KVM\nprocess on the host, causing the guest to crash. A remote attacker could\nuse this flaw to send specially-crafted data to a target guest system,\ncausing that guest to crash. (CVE-2010-0741)\n\nAdditionally, these updated packages include numerous bug fixes and\nenhancements. Refer to the KVM chapter of the Red Hat Enterprise Linux 5.5\nTechnical Notes for details:\n\nhttp://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.5/html/Technical_Notes/kvm.html       \n\nAll KVM users should upgrade to these updated packages, which resolve this\nissue as well as fixing the bugs and adding the enhancements noted in the\nTechnical Notes. Note: The procedure in the Solution section must be\nperformed before this update will take effect.",
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          "product_id": "5Server-VT:kmod-kvm-0:83-164.el5.x86_64"
        },
        "product_reference": "kmod-kvm-0:83-164.el5.x86_64",
        "relates_to_product_reference": "5Server-VT"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "kvm-0:83-164.el5.src as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)",
          "product_id": "5Server-VT:kvm-0:83-164.el5.src"
        },
        "product_reference": "kvm-0:83-164.el5.src",
        "relates_to_product_reference": "5Server-VT"
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          "product_id": "5Server-VT:kvm-0:83-164.el5.x86_64"
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        "product_reference": "kvm-0:83-164.el5.x86_64",
        "relates_to_product_reference": "5Server-VT"
      },
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        "category": "default_component_of",
        "full_product_name": {
          "name": "kvm-debuginfo-0:83-164.el5.x86_64 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)",
          "product_id": "5Server-VT:kvm-debuginfo-0:83-164.el5.x86_64"
        },
        "product_reference": "kvm-debuginfo-0:83-164.el5.x86_64",
        "relates_to_product_reference": "5Server-VT"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "kvm-qemu-img-0:83-164.el5.x86_64 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)",
          "product_id": "5Server-VT:kvm-qemu-img-0:83-164.el5.x86_64"
        },
        "product_reference": "kvm-qemu-img-0:83-164.el5.x86_64",
        "relates_to_product_reference": "5Server-VT"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "kvm-tools-0:83-164.el5.x86_64 as a component of Red Hat Enterprise Linux Virtualization (v. 5 server)",
          "product_id": "5Server-VT:kvm-tools-0:83-164.el5.x86_64"
        },
        "product_reference": "kvm-tools-0:83-164.el5.x86_64",
        "relates_to_product_reference": "5Server-VT"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2010-0430",
      "discovery_date": "2010-02-23T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "568702"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "libspice, as used in QEMU-KVM in Red Hat Enterprise Virtualization Hypervisor (aka RHEV-H or rhev-hypervisor) before 5.5-2.2 and possibly other products, allows guest OS users to read from or write to arbitrary QEMU memory by modifying the address that is used by Cairo for memory mappings.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libspice: Insufficient guest provided memory mappings boundaries validations",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The CVE-2010-0430 issue was fixed in the kvm packages for Red Hat Enterprise Linux 5 via RHSA-2010:0271, and fixed in the rhev-hypervisor package via RHSA-2010:0476. This CVE was not disclosed at the time the errata were released; therefore, it was not mentioned in them.",
          "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": [
          "5Client-VT:kmod-kvm-0:83-164.el5.x86_64",
          "5Client-VT:kvm-0:83-164.el5.src",
          "5Client-VT:kvm-0:83-164.el5.x86_64",
          "5Client-VT:kvm-debuginfo-0:83-164.el5.x86_64",
          "5Client-VT:kvm-qemu-img-0:83-164.el5.x86_64",
          "5Client-VT:kvm-tools-0:83-164.el5.x86_64",
          "5Server-VT:kmod-kvm-0:83-164.el5.x86_64",
          "5Server-VT:kvm-0:83-164.el5.src",
          "5Server-VT:kvm-0:83-164.el5.x86_64",
          "5Server-VT:kvm-debuginfo-0:83-164.el5.x86_64",
          "5Server-VT:kvm-qemu-img-0:83-164.el5.x86_64",
          "5Server-VT:kvm-tools-0:83-164.el5.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2010-0430"
        },
        {
          "category": "external",
          "summary": "RHBZ#568702",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=568702"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2010-0430",
          "url": "https://www.cve.org/CVERecord?id=CVE-2010-0430"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2010-0430",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-0430"
        }
      ],
      "release_date": "2010-03-30T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2010-03-29T12:00:00+00:00",
          "details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttp://kbase.redhat.com/faq/docs/DOC-11259\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.",
          "product_ids": [
            "5Client-VT:kmod-kvm-0:83-164.el5.x86_64",
            "5Client-VT:kvm-0:83-164.el5.src",
            "5Client-VT:kvm-0:83-164.el5.x86_64",
            "5Client-VT:kvm-debuginfo-0:83-164.el5.x86_64",
            "5Client-VT:kvm-qemu-img-0:83-164.el5.x86_64",
            "5Client-VT:kvm-tools-0:83-164.el5.x86_64",
            "5Server-VT:kmod-kvm-0:83-164.el5.x86_64",
            "5Server-VT:kvm-0:83-164.el5.src",
            "5Server-VT:kvm-0:83-164.el5.x86_64",
            "5Server-VT:kvm-debuginfo-0:83-164.el5.x86_64",
            "5Server-VT:kvm-qemu-img-0:83-164.el5.x86_64",
            "5Server-VT:kvm-tools-0:83-164.el5.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2010:0271"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "SINGLE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 6.6,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:L/AC:M/Au:S/C:C/I:C/A:C",
            "version": "2.0"
          },
          "products": [
            "5Client-VT:kmod-kvm-0:83-164.el5.x86_64",
            "5Client-VT:kvm-0:83-164.el5.src",
            "5Client-VT:kvm-0:83-164.el5.x86_64",
            "5Client-VT:kvm-debuginfo-0:83-164.el5.x86_64",
            "5Client-VT:kvm-qemu-img-0:83-164.el5.x86_64",
            "5Client-VT:kvm-tools-0:83-164.el5.x86_64",
            "5Server-VT:kmod-kvm-0:83-164.el5.x86_64",
            "5Server-VT:kvm-0:83-164.el5.src",
            "5Server-VT:kvm-0:83-164.el5.x86_64",
            "5Server-VT:kvm-debuginfo-0:83-164.el5.x86_64",
            "5Server-VT:kvm-qemu-img-0:83-164.el5.x86_64",
            "5Server-VT:kvm-tools-0:83-164.el5.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "libspice: Insufficient guest provided memory mappings boundaries validations"
    },
    {
      "cve": "CVE-2010-0741",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "discovery_date": "2009-10-22T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "577218"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "The virtio_net_bad_features function in hw/virtio-net.c in the virtio-net driver in the Linux kernel before 2.6.26, when used on a guest OS in conjunction with qemu-kvm 0.11.0 or KVM 83, allows remote attackers to cause a denial of service (guest OS crash, and an associated qemu-kvm process exit) by sending a large amount of network traffic to a TCP port on the guest OS, related to a virtio-net whitelist that includes an improper implementation of TCP Segment Offloading (TSO).",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "qemu: Improper handling of erroneous data provided by Linux virtio-net driver",
          "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": [
          "5Client-VT:kmod-kvm-0:83-164.el5.x86_64",
          "5Client-VT:kvm-0:83-164.el5.src",
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          "5Server-VT:kvm-qemu-img-0:83-164.el5.x86_64",
          "5Server-VT:kvm-tools-0:83-164.el5.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2010-0741"
        },
        {
          "category": "external",
          "summary": "RHBZ#577218",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=577218"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2010-0741",
          "url": "https://www.cve.org/CVERecord?id=CVE-2010-0741"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2010-0741",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-0741"
        }
      ],
      "release_date": "2009-10-22T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2010-03-29T12:00:00+00:00",
          "details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttp://kbase.redhat.com/faq/docs/DOC-11259\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.",
          "product_ids": [
            "5Client-VT:kmod-kvm-0:83-164.el5.x86_64",
            "5Client-VT:kvm-0:83-164.el5.src",
            "5Client-VT:kvm-0:83-164.el5.x86_64",
            "5Client-VT:kvm-debuginfo-0:83-164.el5.x86_64",
            "5Client-VT:kvm-qemu-img-0:83-164.el5.x86_64",
            "5Client-VT:kvm-tools-0:83-164.el5.x86_64",
            "5Server-VT:kmod-kvm-0:83-164.el5.x86_64",
            "5Server-VT:kvm-0:83-164.el5.src",
            "5Server-VT:kvm-0:83-164.el5.x86_64",
            "5Server-VT:kvm-debuginfo-0:83-164.el5.x86_64",
            "5Server-VT:kvm-qemu-img-0:83-164.el5.x86_64",
            "5Server-VT:kvm-tools-0:83-164.el5.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2010:0271"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 7.1,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
            "version": "2.0"
          },
          "products": [
            "5Client-VT:kmod-kvm-0:83-164.el5.x86_64",
            "5Client-VT:kvm-0:83-164.el5.src",
            "5Client-VT:kvm-0:83-164.el5.x86_64",
            "5Client-VT:kvm-debuginfo-0:83-164.el5.x86_64",
            "5Client-VT:kvm-qemu-img-0:83-164.el5.x86_64",
            "5Client-VT:kvm-tools-0:83-164.el5.x86_64",
            "5Server-VT:kmod-kvm-0:83-164.el5.x86_64",
            "5Server-VT:kvm-0:83-164.el5.src",
            "5Server-VT:kvm-0:83-164.el5.x86_64",
            "5Server-VT:kvm-debuginfo-0:83-164.el5.x86_64",
            "5Server-VT:kvm-qemu-img-0:83-164.el5.x86_64",
            "5Server-VT:kvm-tools-0:83-164.el5.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "qemu: Improper handling of erroneous data provided by Linux virtio-net driver"
    }
  ]
}


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