rhsa-2015_0795
Vulnerability from csaf_redhat
Published
2015-04-09 15:44
Modified
2024-11-14 16:29
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 Linux OpenStack Platform 5.0 for Red Hat Enterprise Linux 7. 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, in environments managed by Red Hat Enterprise Linux OpenStack Platform. It was found that the Cirrus blit region checks were insufficient. A privileged guest user could use this flaw to write outside of VRAM-allocated buffer boundaries in the host's QEMU process address space with attacker-provided data. (CVE-2014-8106) This issue was discovered by Paolo Bonzini of Red Hat. All users of qemu-kvm-rhev 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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        "text": "Updated qemu-kvm-rhev packages that fix one security issue are now\navailable for Red Hat Enterprise Linux OpenStack Platform 5.0 for Red Hat\nEnterprise Linux 7.\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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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Paolo Bonzini"
          ],
          "organization": "Red Hat",
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2014-8106",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "discovery_date": "2014-11-13T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1169454"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "It was found that the Cirrus blit region checks were insufficient. A privileged guest user could use this flaw to write outside of VRAM-allocated buffer boundaries in the host\u0027s QEMU process address space with attacker-provided data.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "qemu: cirrus: insufficient blit region checks",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue affects the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6, a future update may address this flaw.\n\nThis issue affects the kvm packages as shipped with Red Hat Enterprise Linux 5. Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. This issue is currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.",
          "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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          "7Server-RH7-RHOS-5.0:qemu-kvm-rhev-debuginfo-10:2.1.2-23.el7.x86_64",
          "7Server-RH7-RHOS-5.0:qemu-kvm-tools-rhev-10:2.1.2-23.el7.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2014-8106"
        },
        {
          "category": "external",
          "summary": "RHBZ#1169454",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1169454"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2014-8106",
          "url": "https://www.cve.org/CVERecord?id=CVE-2014-8106"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2014-8106",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-8106"
        }
      ],
      "release_date": "2014-12-04T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2015-04-09T15:44:29+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",
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        {
          "cvss_v2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "ADJACENT_NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.9,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:A/AC:M/Au:S/C:P/I:P/A:P",
            "version": "2.0"
          },
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            "7Server-RH7-RHOS-5.0:qemu-kvm-rhev-10:2.1.2-23.el7.src",
            "7Server-RH7-RHOS-5.0:qemu-kvm-rhev-10:2.1.2-23.el7.x86_64",
            "7Server-RH7-RHOS-5.0:qemu-kvm-rhev-debuginfo-10:2.1.2-23.el7.x86_64",
            "7Server-RH7-RHOS-5.0:qemu-kvm-tools-rhev-10:2.1.2-23.el7.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "qemu: cirrus: insufficient blit region checks"
    }
  ]
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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