csaf_redhat - rhsa-2020

rhsa-2020_4053

Vulnerability from csaf_redhat

Published

2020-09-29 15:34

Modified

2024-11-15 06:15

Summary

Red Hat Security Advisory: qemu-kvm security update

Notes

Topic

An update for qemu-kvm is now available for Red Hat Enterprise Linux 7.7 Extended 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.

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"
        }
      ],
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-14364"
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          "category": "external",
          "summary": "RHBZ#1869201",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1869201"
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          "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"
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          "summary": "https://www.openwall.com/lists/oss-security/2020/08/24/3",
          "url": "https://www.openwall.com/lists/oss-security/2020/08/24/3"
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      "release_date": "2020-08-24T12:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-09-29T15:34:30+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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            "7Server-7.7.EUS:qemu-kvm-tools-10:1.5.3-167.el7_7.7.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:4053"
        },
        {
          "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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            "7ComputeNode-optional-7.7.EUS:qemu-kvm-10:1.5.3-167.el7_7.7.src",
            "7ComputeNode-optional-7.7.EUS:qemu-kvm-10:1.5.3-167.el7_7.7.x86_64",
            "7ComputeNode-optional-7.7.EUS:qemu-kvm-common-10:1.5.3-167.el7_7.7.x86_64",
            "7ComputeNode-optional-7.7.EUS:qemu-kvm-debuginfo-10:1.5.3-167.el7_7.7.x86_64",
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            "7Server-7.7.EUS:qemu-kvm-tools-10:1.5.3-167.el7_7.7.x86_64"
          ]
        }
      ],
      "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": [
            "7ComputeNode-optional-7.7.EUS:qemu-img-10:1.5.3-167.el7_7.7.x86_64",
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            "7Server-7.7.EUS:qemu-kvm-tools-10:1.5.3-167.el7_7.7.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "QEMU: usb: out-of-bounds r/w access issue while processing usb packets"
    }
  ]
}

cve-2020-14364

Vulnerability from cvelistv5

Published

2020-08-31 17:11

Modified

2024-08-04 12:46

Severity ?

Summary

An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' 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.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1869201	x_refsource_MISC
	https://www.openwall.com/lists/oss-security/2020/08/24/3	x_refsource_MISC
	https://www.openwall.com/lists/oss-security/2020/08/24/2	x_refsource_MISC
	https://www.debian.org/security/2020/dsa-4760	vendor-advisory, x_refsource_DEBIAN
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTZQUQ6ZBPMFMNAUQBVJFELYNMUZLL6P/	vendor-advisory, x_refsource_FEDORA
	https://lists.debian.org/debian-lts-announce/2020/09/msg00013.html	mailing-list, x_refsource_MLIST
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M52WIRMZL6TZRYZ65N6OAYNNFHV62O2N/	vendor-advisory, x_refsource_FEDORA
	https://usn.ubuntu.com/4511-1/	vendor-advisory, x_refsource_UBUNTU
	https://security.netapp.com/advisory/ntap-20200924-0006/	x_refsource_CONFIRM
	https://security.gentoo.org/glsa/202009-14	vendor-advisory, x_refsource_GENTOO
	http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html	vendor-advisory, x_refsource_SUSE
	https://security.gentoo.org/glsa/202011-09	vendor-advisory, x_refsource_GENTOO

Impacted products

Vendor

Product

Version

▼

n/a

QEMU

Version: QEMU versions before 5.2.0

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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