rhsa-2020_4054
Vulnerability from csaf_redhat
Published
2020-09-29 08:27
Modified
2024-11-05 22:46
Summary
Red Hat Security Advisory: qemu-kvm security update

Notes

Topic
An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.5 Advanced Update Support. 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
Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Security Fix(es): * QEMU: usb: out-of-bounds r/w access issue while processing usb packets (CVE-2020-14364) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
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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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Xiao Wei"
          ],
          "organization": "360.com"
        },
        {
          "names": [
            "Ziming Zhang"
          ]
        }
      ],
      "cve": "CVE-2020-14364",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "discovery_date": "2020-08-13T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1869201"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU. This issue occurs while processing USB packets from a guest when USBDevice \u0027setup_len\u0027 exceeds its \u0027data_buf[4096]\u0027 in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "QEMU: usb: out-of-bounds r/w access issue while processing usb packets",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue affects the version of the qemu-kvm package as shipped with the Red Hat Enterprise Linux  6, 7 and 8. Future qemu-kvm package updates for Red Hat Enterprise Linux 6, 7 and 8 may\naddress this issue.\n\nRed Hat Enterprise Linux 5 is now in Maintenance Support 2 Phase of the support and maintenance life cycle. This issue is not currently planned to be addressed in its future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.\n\nRed Hat OpenStack Platform 15 and newer consume fixes directly from the Red Hat Enterprise Linux 8 Advanced Virtualization repository.",
          "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": [
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          "6Server-6.5.AUS:qemu-img-2:0.12.1.2-2.415.el6_5.21.x86_64",
          "6Server-6.5.AUS:qemu-kvm-2:0.12.1.2-2.415.el6_5.21.src",
          "6Server-6.5.AUS:qemu-kvm-2:0.12.1.2-2.415.el6_5.21.x86_64",
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-14364"
        },
        {
          "category": "external",
          "summary": "RHBZ#1869201",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1869201"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-14364",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-14364"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-14364",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14364"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2020/08/24/2",
          "url": "https://www.openwall.com/lists/oss-security/2020/08/24/2"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2020/08/24/3",
          "url": "https://www.openwall.com/lists/oss-security/2020/08/24/3"
        }
      ],
      "release_date": "2020-08-24T12:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-09-29T08:27:31+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": [
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            "6Server-6.5.AUS:qemu-kvm-2:0.12.1.2-2.415.el6_5.21.x86_64",
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:4054"
        },
        {
          "category": "workaround",
          "details": "Using Libvirt management interface to manage guest VMs significantly reduces impact of this issue. Libvirt starts each guest process with an unprivileged system user(ex. qemu) privileges and further confines the process with strict sVirt and SELinux policies.\n\n* https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_security_guide/",
          "product_ids": [
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            "6Server-6.5.AUS:qemu-kvm-2:0.12.1.2-2.415.el6_5.21.x86_64",
            "6Server-6.5.AUS:qemu-kvm-debuginfo-2:0.12.1.2-2.415.el6_5.21.x86_64",
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          ]
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      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 5.0,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
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            "6Server-6.5.AUS:qemu-img-2:0.12.1.2-2.415.el6_5.21.x86_64",
            "6Server-6.5.AUS:qemu-kvm-2:0.12.1.2-2.415.el6_5.21.src",
            "6Server-6.5.AUS:qemu-kvm-2:0.12.1.2-2.415.el6_5.21.x86_64",
            "6Server-6.5.AUS:qemu-kvm-debuginfo-2:0.12.1.2-2.415.el6_5.21.x86_64",
            "6Server-6.5.AUS:qemu-kvm-tools-2:0.12.1.2-2.415.el6_5.21.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "QEMU: usb: out-of-bounds r/w access issue while processing usb packets"
    }
  ]
}


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