rhsa-2020_3267
Vulnerability from csaf_redhat
Published
2020-08-03 07:25
Modified
2024-11-15 05:21
Summary
Red Hat Security Advisory: qemu-kvm-rhev security, bug fix, and enhancement update

Notes

Topic
An update for qemu-kvm-rhev is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 and Red Hat Virtualization Engine 4.3. Red Hat Product Security has rated this update as having a security impact of Low. 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): * CVE-2019-20382 QEMU: vnc: memory leakage upon disconnect 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. Bug Fix(es): * Add support for newer glusterfs (BZ#1802216) * Backport: Passthrough host CPU microcode version to KVM guest if using CPU passthrough to RHEL 7.7/7.8 (BZ#1791653) * After hot unplug virtio-net and vfio nic, hot plug vfio-pci device fails in Win2019 guest (BZ#1721403) * qemu-kvm-rhev: Qemu: seccomp: blacklist is not applied to all threads (BZ#1618504) * Fix overzealous I/O request splitting performance regression (BZ#1819253)
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": "An update for qemu-kvm-rhev is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 and Red Hat Virtualization Engine 4.3.\n\nRed Hat Product Security has rated this update as having a security impact of Low. 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.",
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        "text": "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.\n\nSecurity Fix(es):\n\n* CVE-2019-20382 QEMU: vnc: memory leakage upon disconnect\n\nFor 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.\n\nBug Fix(es):\n\n* Add support for newer glusterfs (BZ#1802216)\n\n* Backport: Passthrough host CPU microcode version to KVM guest if using CPU passthrough to RHEL 7.7/7.8 (BZ#1791653)\n\n* After hot unplug virtio-net and vfio nic, hot plug vfio-pci device fails in Win2019 guest (BZ#1721403)\n\n* qemu-kvm-rhev: Qemu: seccomp: blacklist is not applied to all threads (BZ#1618504)\n\n* Fix overzealous I/O request splitting performance regression (BZ#1819253)",
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        "full_product_name": {
          "name": "qemu-kvm-tools-rhev-10:2.12.0-48.el7.x86_64 as a component of RHV-M 4.3",
          "product_id": "7Server-RHV-S-4.3:qemu-kvm-tools-rhev-10:2.12.0-48.el7.x86_64"
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        "product_reference": "qemu-kvm-tools-rhev-10:2.12.0-48.el7.x86_64",
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  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Jann Horn"
          ],
          "organization": "Google.com"
        }
      ],
      "cve": "CVE-2018-15746",
      "cwe": {
        "id": "CWE-184",
        "name": "Incomplete List of Disallowed Inputs"
      },
      "discovery_date": "2018-07-15T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1615637"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "qemu-seccomp.c in QEMU might allow local OS guest users to cause a denial of service (guest crash) by leveraging mishandling of the seccomp policy for threads other than the main thread.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "QEMU: seccomp: blacklist is not applied to all threads",
          "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": {
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        {
          "category": "external",
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-15746"
        }
      ],
      "release_date": "2018-08-13T00:00:00+00:00",
      "remediations": [
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          "category": "vendor_fix",
          "date": "2020-08-03T07:25:01+00:00",
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            "attackVector": "LOCAL",
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            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L",
            "version": "3.0"
          },
          "products": [
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "QEMU: seccomp: blacklist is not applied to all threads"
    },
    {
      "cve": "CVE-2019-20382",
      "cwe": {
        "id": "CWE-772",
        "name": "Missing Release of Resource after Effective Lifetime"
      },
      "discovery_date": "2019-09-17T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1810390"
        }
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      "notes": [
        {
          "category": "description",
          "text": "A memory leakage flaw was found in the way the VNC display driver of QEMU handled the connection disconnect when ZRLE and Tight encoding are enabled. Two VncState objects are created, and one allocates memory for the Zlib\u0027s data object. This allocated memory is not freed upon disconnection, resulting in a memory leak. An attacker able to connect to the VNC server could use this flaw to leak host memory,  leading to a potential denial of service.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "QEMU: vnc: memory leakage upon disconnect",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This flaw did not affect the versions of `qemu-kvm` as shipped with Red Hat Enterprise Linux 6 as they did not include the vulnerable code.",
          "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",
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        {
          "category": "external",
          "summary": "RHBZ#1810390",
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        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-20382",
          "url": "https://www.cve.org/CVERecord?id=CVE-2019-20382"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-20382",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20382"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2020/03/05/1",
          "url": "https://www.openwall.com/lists/oss-security/2020/03/05/1"
        }
      ],
      "release_date": "2019-09-17T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
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            "scope": "UNCHANGED",
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "QEMU: vnc: memory leakage upon disconnect"
    }
  ]
}


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