rhsa-2020_2342
Vulnerability from csaf_redhat
Published
2020-06-01 06:42
Modified
2024-11-05 22:16
Summary
Red Hat Security Advisory: qemu-kvm-rhev bug fix update

Notes

Topic
An update for qemu-kvm-rhev is now available for Red Hat Virtualization for Red Hat Virtualization Host 7. 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-2020-8608 QEMU: Slirp: potential OOB access due to unsafe snprintf() usages * CVE-2020-7039 QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu() * CVE-2019-14378 QEMU: slirp: heap buffer overflow during packet reassembly This update fixes the following bug: * BZ 1804577 Backport: Passthrough host CPU microcode version to KVM guest if using CPU passthrough to RHEL 7.7/7.8 [rhel-7.6.z] Users of qemu-kvm are advised to upgrade to these updated packages. After 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.
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 for Red Hat Virtualization Host 7.\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-2020-8608 QEMU: Slirp: potential OOB access due to unsafe snprintf() usages\n\n* CVE-2020-7039 QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()\n\n* CVE-2019-14378 QEMU: slirp: heap buffer overflow during packet reassembly\n\nThis update fixes the following bug:\n\n* BZ 1804577 Backport: Passthrough host CPU microcode version to KVM guest if using CPU passthrough to RHEL 7.7/7.8 [rhel-7.6.z] \n\nUsers of qemu-kvm are advised to upgrade to these updated packages. After 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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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Vishnu Dev"
          ]
        }
      ],
      "cve": "CVE-2019-14378",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2019-07-08T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1734745"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A heap buffer overflow issue was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the ip_reass() routine while reassembling incoming packets if the first fragment is bigger than the m-\u003em_dat[] buffer. An attacker could use this flaw to crash the QEMU process on the host, resulting in a Denial of Service or potentially executing arbitrary code with privileges of the QEMU process.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "QEMU: slirp: heap buffer overflow during packet reassembly",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat OpenStack Platform:                                                                                                                 \n* This flaw impacts KVM user-mode or SLIRP networking, which is not used in Red Hat OpenStack Platform. Although updating is recommended for affected versions (see below), Red Hat OpenStack Platform environments are not vulnerable.\n* Because the flaw\u0027s impact is Low, it will not be fixed in Red Hat OpenStack Platform 9 which is retiring within a few weeks of the flaw\u0027s public date.",
          "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": {
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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2019-14378"
        },
        {
          "category": "external",
          "summary": "RHBZ#1734745",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1734745"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-14378",
          "url": "https://www.cve.org/CVERecord?id=CVE-2019-14378"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-14378",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-14378"
        }
      ],
      "release_date": "2019-07-28T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-06-01T06:42:45+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/2974891",
          "product_ids": [
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            "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.src",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.11.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:2342"
        },
        {
          "category": "workaround",
          "details": "There is no external mitigation to prevent this out-of-bounds heap memory access.",
          "product_ids": [
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            "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.11.x86_64",
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      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "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:H",
            "version": "3.0"
          },
          "products": [
            "7Server-RHV-S-4.2:qemu-img-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.src",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.11.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "QEMU: slirp: heap buffer overflow during packet reassembly"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Vishnu Dev TJ"
          ]
        }
      ],
      "cve": "CVE-2020-7039",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2019-08-05T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1791551"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A heap buffer overflow issue was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the tcp_emu() routine while emulating IRC and other protocols. An attacker could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue affects user-mode or SLiRP networking implementation of the QEMU emulator. Though qemu-kvm package is built with SLiRP networking support, due to its limitations, it is not used by the virtual machine guests by default.\n\nThis issue affects versions of the qemu-kvm package as shipped with Red Hat Enterprise Linux 5, 6, 7, 8 and Red Hat Enterprise Linux Advanced Virtualization 8. Future qemu-kvm package updates for Red Hat Enterprise Linux 6, 7, 8 and Red Hat Enterprise Linux Advanced Virtualization 8 may address 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 currently not 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:                                                                                                                 \n* This flaw impacts KVM user-mode or SLIRP networking, which is not used in Red Hat OpenStack Platform. Although updating is recommended for affected versions (see below), Red Hat OpenStack Platform environments are not vulnerable.",
          "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": [
          "7Server-RHV-S-4.2:qemu-img-rhev-10:2.12.0-18.el7_6.11.x86_64",
          "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.11.x86_64",
          "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.src",
          "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.x86_64",
          "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.11.x86_64",
          "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.11.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-7039"
        },
        {
          "category": "external",
          "summary": "RHBZ#1791551",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1791551"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-7039",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-7039"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-7039",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-7039"
        }
      ],
      "release_date": "2020-01-07T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-06-01T06:42:45+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/2974891",
          "product_ids": [
            "7Server-RHV-S-4.2:qemu-img-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.src",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.11.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:2342"
        },
        {
          "category": "workaround",
          "details": "This issue can only be resolved by applying updates.\n\nMitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "7Server-RHV-S-4.2:qemu-img-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.src",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.11.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
            "7Server-RHV-S-4.2:qemu-img-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.src",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.11.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Laszlo Ersek"
          ],
          "organization": "redhat.com"
        }
      ],
      "cve": "CVE-2020-8608",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2020-01-20T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1798453"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "An out-of-bounds heap buffer access flaw was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in tcp_emu() routine while emulating IRC and other protocols due to unsafe usage of the snprintf(3) function. A user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process on the host.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "QEMU: Slirp: potential OOB access due to unsafe snprintf() usages",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue affects user-mode or SLiRP networking implementation of the QEMU emulator. Though qemu-kvm package is built with SLiRP networking support, due to its limitations, it is not used by the virtual machine guests by default.\n\nThis issue affects versions of the qemu-kvm package as shipped with Red Hat Enterprise Linux 5, 6, 7, 8 and Red Hat Enterprise Linux Advanced Virtualization 8. Future qemu-kvm package updates for Red Hat Enterprise Linux 6, 7, 8 and Red Hat Enterprise Linux Advanced Virtualization 8 may address 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 currently not 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:                                                                                                                 \nThis flaw impacts KVM user-mode or SLIRP networking, which is not used in Red Hat OpenStack Platform. Although updating is recommended for affected versions (see below), Red Hat OpenStack Platform environments are not vulnerable.",
          "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": [
          "7Server-RHV-S-4.2:qemu-img-rhev-10:2.12.0-18.el7_6.11.x86_64",
          "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.11.x86_64",
          "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.src",
          "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.x86_64",
          "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.11.x86_64",
          "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.11.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-8608"
        },
        {
          "category": "external",
          "summary": "RHBZ#1798453",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1798453"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-8608",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-8608"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-8608",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8608"
        }
      ],
      "release_date": "2020-01-27T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-06-01T06:42:45+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/2974891",
          "product_ids": [
            "7Server-RHV-S-4.2:qemu-img-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.src",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.11.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:2342"
        },
        {
          "category": "workaround",
          "details": "This issue can only be resolved by applying updates.\n\nMitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "7Server-RHV-S-4.2:qemu-img-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.src",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.11.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
            "7Server-RHV-S-4.2:qemu-img-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.src",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.11.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.11.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "QEMU: Slirp: potential OOB access due to unsafe snprintf() usages"
    }
  ]
}


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