rhsa-2018_2887
Vulnerability from csaf_redhat
Published
2018-10-09 11:04
Modified
2024-11-05 20:47
Summary
Red Hat Security Advisory: qemu-kvm-rhev security update

Notes

Topic
An update for qemu-kvm-rhev is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 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): * QEMU: slirp: heap buffer overflow while reassembling fragmented datagrams (CVE-2018-11806) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Jskz - Zero Day Initiative (trendmicro.com) for reporting this issue.
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": [
        {
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          "organization": "trendmicro.com"
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      "cve": "CVE-2018-11806",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2018-04-27T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "1586245"
        }
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      "notes": [
        {
          "category": "description",
          "text": "A heap buffer overflow issue was found in the way SLiRP networking back-end in QEMU processes fragmented packets. It could occur while reassembling the fragmented datagrams of an incoming packet. A privileged user/process inside guest could use this flaw to crash the QEMU process resulting in DoS or potentially leverage it to execute arbitrary code on the host with privileges of the QEMU process.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "QEMU: slirp: heap buffer overflow while reassembling fragmented datagrams",
          "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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        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-11806",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-11806"
        }
      ],
      "release_date": "2018-06-05T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2018-10-09T11:04:53+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/2974891\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-RHEV-4-Agents-7:qemu-img-rhev-10:2.10.0-21.el7_5.7.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-img-rhev-10:2.10.0-21.el7_5.7.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.10.0-21.el7_5.7.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.10.0-21.el7_5.7.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.10.0-21.el7_5.7.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.10.0-21.el7_5.7.src",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.10.0-21.el7_5.7.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.10.0-21.el7_5.7.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.10.0-21.el7_5.7.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.10.0-21.el7_5.7.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.10.0-21.el7_5.7.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2018:2887"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L",
            "version": "3.0"
          },
          "products": [
            "7Server-RHEV-4-Agents-7:qemu-img-rhev-10:2.10.0-21.el7_5.7.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-img-rhev-10:2.10.0-21.el7_5.7.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.10.0-21.el7_5.7.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.10.0-21.el7_5.7.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.10.0-21.el7_5.7.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.10.0-21.el7_5.7.src",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.10.0-21.el7_5.7.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.10.0-21.el7_5.7.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.10.0-21.el7_5.7.x86_64",
            "7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.10.0-21.el7_5.7.ppc64le",
            "7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.10.0-21.el7_5.7.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "QEMU: slirp: heap buffer overflow while reassembling fragmented datagrams"
    }
  ]
}


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