rhsa-2020_0730
Vulnerability from csaf_redhat
Published
2020-03-05 15:06
Modified
2024-11-15 06:09
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 Engine 4.2. 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): * hw: TSX Transaction Asynchronous Abort (TAA) (CVE-2019-11135) * QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server (CVE-2020-1711) 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): * [Intel 7.6.z Bug] [KVM][CLX] CPUID_7_0_EDX_ARCH_CAPABILITIES is not enabled in VM qemu-kvm-rhev (BZ#1730601) * qemu-kvm-rhev: backport cpuidle-haltpoll support (BZ#1746281) Enhancement(s): * [Intel 7.7 FEAT] MDS_NO exposure to guest - qemu-kvm-rhev (BZ#1743632)
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 Engine 4.2.\n\nRed 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.",
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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* hw: TSX Transaction Asynchronous Abort (TAA) (CVE-2019-11135)\n\n* QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server (CVE-2020-1711)\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* [Intel 7.6.z Bug] [KVM][CLX] CPUID_7_0_EDX_ARCH_CAPABILITIES is not enabled in VM qemu-kvm-rhev (BZ#1730601)\n\n* qemu-kvm-rhev: backport cpuidle-haltpoll support (BZ#1746281)\n\nEnhancement(s):\n\n* [Intel 7.7 FEAT] MDS_NO exposure to guest - qemu-kvm-rhev (BZ#1743632)",
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  "vulnerabilities": [
    {
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        {
          "names": [
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      "cve": "CVE-2019-11135",
      "cwe": {
        "id": "CWE-203",
        "name": "Observable Discrepancy"
      },
      "discovery_date": "2019-09-18T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1753062"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the way Intel CPUs handle speculative execution of instructions when the TSX Asynchronous Abort (TAA) error occurs. A local authenticated attacker with the ability to monitor execution times could infer the TSX memory state by comparing abort execution times. This could allow information disclosure via this observed side-channel for any TSX transaction being executed while an attacker is able to observe abort timing.\r\n\r\nIntel\u0027s Transactional Synchronisation Extensions (TSX) are set of instructions which enable transactional memory support to improve performance of the multi-threaded applications, in the lock-protected critical sections. The CPU executes instructions in the critical-sections as transactions, while ensuring their atomic state. When such transaction execution is unsuccessful, the processor cannot ensure atomic updates to the transaction memory, so the processor rolls back or aborts such transaction execution.\r\n\r\nWhile TSX Asynchronous Abort (TAA) is pending, CPU may continue to read data from architectural buffers and pass it to the dependent speculative operations. This may cause information leakage via speculative side-channel means, which is quite similar to the Microarchitectural Data Sampling (MDS) issue.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "hw: TSX Transaction Asynchronous Abort (TAA)",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "libvirt and qemu-kvm on Red Hat Enterprise Linux 6 are not affected by this vulnerability as they do not support MSR-based CPU features.",
          "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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        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2019-11135"
        },
        {
          "category": "external",
          "summary": "RHBZ#1753062",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1753062"
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        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-11135",
          "url": "https://www.cve.org/CVERecord?id=CVE-2019-11135"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-11135",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11135"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/solutions/tsx-asynchronousabort",
          "url": "https://access.redhat.com/solutions/tsx-asynchronousabort"
        },
        {
          "category": "external",
          "summary": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00270.html",
          "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00270.html"
        }
      ],
      "release_date": "2019-11-12T18:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-03-05T15:06:07+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.",
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          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:0730"
        },
        {
          "category": "workaround",
          "details": "For mitigation related information, please refer to the Red Hat Knowledgebase article:  https://access.redhat.com/solutions/tsx-asynchronousabort",
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      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.0"
          },
          "products": [
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "hw: TSX Transaction Asynchronous Abort (TAA)"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Felipe Franciosi",
            "Peter Turschmid",
            "Raphael Norwitz"
          ],
          "organization": "nutanix.com"
        }
      ],
      "cve": "CVE-2020-1711",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2020-01-20T00:00:00+00:00",
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        {
          "category": "description",
          "text": "An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. A remote user could use this flaw to crash the QEMU process, 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: block: iscsi: OOB heap access via an unexpected response of iSCSI Server",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue affects the versions of the qemu-kvm package as shipped with Red Hat Enterprise Linux 8, Red Hat OpenStack, Red Hat Virtualization and Red Hat Enterprise Linux Advanced Virtualization 8.",
          "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_6.9.x86_64",
          "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.9.x86_64",
          "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.9.src",
          "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.9.x86_64",
          "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.9.x86_64",
          "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.9.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-1711"
        },
        {
          "category": "external",
          "summary": "RHBZ#1794290",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1794290"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-1711",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-1711"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-1711",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-1711"
        }
      ],
      "release_date": "2020-01-23T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-03-05T15:06:07+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-RHV-S-4.2:qemu-img-rhev-10:2.12.0-18.el7_6.9.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.9.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.9.src",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.9.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.9.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.9.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:0730"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 6.0,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
            "7Server-RHV-S-4.2:qemu-img-rhev-10:2.12.0-18.el7_6.9.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-common-rhev-10:2.12.0-18.el7_6.9.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.9.src",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-10:2.12.0-18.el7_6.9.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-rhev-debuginfo-10:2.12.0-18.el7_6.9.x86_64",
            "7Server-RHV-S-4.2:qemu-kvm-tools-rhev-10:2.12.0-18.el7_6.9.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server"
    }
  ]
}


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