rhsa-2017_0332
Vulnerability from csaf_redhat
Published
2017-02-27 23:12
Modified
2024-11-14 22:38
Summary
Red Hat Security Advisory: qemu-kvm-rhev security update

Notes

Topic
An update for qemu-kvm-rhev is now available for Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7. Red Hat Product Security has rated this update as having a security impact of Important. 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
KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix(es): * Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host. (CVE-2017-2615) * Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process. (CVE-2017-2620) Red Hat would like to thank Wjjzhang (Tencent.com Inc.) and Li Qiang (360.cn Inc.) for reporting CVE-2017-2615.
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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      "acknowledgments": [
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          "organization": "360.cn Inc."
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        {
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          "organization": "Tencent.com Inc."
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      "cve": "CVE-2017-2615",
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      "discovery_date": "2017-01-25T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1418200"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "Qemu: display: cirrus: oob access while doing bitblt copy backward mode",
          "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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          "summary": "Canonical URL",
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1418200"
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-2615",
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      "release_date": "2017-01-24T00:00:00+00:00",
      "remediations": [
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          "date": "2017-02-27T23:12:29+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\n\nAfter 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.",
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      "scores": [
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          "cvss_v2": {
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            "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"
          },
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L",
            "version": "3.0"
          },
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          "details": "Important"
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      "title": "Qemu: display: cirrus: oob access while doing bitblt copy backward mode"
    },
    {
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        }
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          "category": "description",
          "text": "Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "Qemu: display: cirrus: potential arbitrary code execution via cirrus_bitblt_cputovideo",
          "title": "Vulnerability summary"
        },
        {
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          "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": "external",
          "summary": "RHBZ#1420484",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1420484"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2017-2620",
          "url": "https://www.cve.org/CVERecord?id=CVE-2017-2620"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-2620",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-2620"
        },
        {
          "category": "external",
          "summary": "https://xenbits.xen.org/xsa/advisory-209.html",
          "url": "https://xenbits.xen.org/xsa/advisory-209.html"
        }
      ],
      "release_date": "2017-02-21T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2017-02-27T23:12:29+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\n\nAfter 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.",
          "product_ids": [
            "7Server-RH7-RHOS-6.0:qemu-img-rhev-10:2.6.0-28.el7_3.6.x86_64",
            "7Server-RH7-RHOS-6.0:qemu-kvm-common-rhev-10:2.6.0-28.el7_3.6.x86_64",
            "7Server-RH7-RHOS-6.0:qemu-kvm-rhev-10:2.6.0-28.el7_3.6.src",
            "7Server-RH7-RHOS-6.0:qemu-kvm-rhev-10:2.6.0-28.el7_3.6.x86_64",
            "7Server-RH7-RHOS-6.0:qemu-kvm-rhev-debuginfo-10:2.6.0-28.el7_3.6.x86_64",
            "7Server-RH7-RHOS-6.0:qemu-kvm-tools-rhev-10:2.6.0-28.el7_3.6.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2017:0332"
        }
      ],
      "scores": [
        {
          "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"
          },
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L",
            "version": "3.0"
          },
          "products": [
            "7Server-RH7-RHOS-6.0:qemu-img-rhev-10:2.6.0-28.el7_3.6.x86_64",
            "7Server-RH7-RHOS-6.0:qemu-kvm-common-rhev-10:2.6.0-28.el7_3.6.x86_64",
            "7Server-RH7-RHOS-6.0:qemu-kvm-rhev-10:2.6.0-28.el7_3.6.src",
            "7Server-RH7-RHOS-6.0:qemu-kvm-rhev-10:2.6.0-28.el7_3.6.x86_64",
            "7Server-RH7-RHOS-6.0:qemu-kvm-rhev-debuginfo-10:2.6.0-28.el7_3.6.x86_64",
            "7Server-RH7-RHOS-6.0:qemu-kvm-tools-rhev-10:2.6.0-28.el7_3.6.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "Qemu: display: cirrus: potential arbitrary code execution via cirrus_bitblt_cputovideo"
    }
  ]
}


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