csaf_redhat - rhsa-2020

rhsa-2020_0666

Vulnerability from csaf_redhat

Published

2020-03-03 15:24

Modified

2024-11-15 03:21

Summary

Red Hat Security Advisory: qemu-kvm security and enhancement update

Notes

Topic

An update for qemu-kvm is now available for Red Hat Enterprise Linux 7.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. 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): * hw: TSX Transaction Asynchronous Abort (TAA) (CVE-2019-11135) 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. Enhancement(s): * [Intel 7.8 FEAT] MDS_NO exposure to guest - qemu-kvm (BZ#1755332)

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": [
            "Intel"
          ]
        }
      ],
      "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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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1753062"
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-11135",
          "url": "https://www.cve.org/CVERecord?id=CVE-2019-11135"
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          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-11135",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11135"
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          "summary": "https://access.redhat.com/solutions/tsx-asynchronousabort",
          "url": "https://access.redhat.com/solutions/tsx-asynchronousabort"
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        {
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          "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"
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      "release_date": "2019-11-12T18:00:00+00:00",
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          "category": "vendor_fix",
          "date": "2020-03-03T15:24:38+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-7.6.EUS:qemu-kvm-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-kvm-common-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-kvm-debuginfo-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-kvm-tools-10:1.5.3-160.el7_6.5.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:0666"
        },
        {
          "category": "workaround",
          "details": "For mitigation related information, please refer to the Red Hat Knowledgebase article:  https://access.redhat.com/solutions/tsx-asynchronousabort",
          "product_ids": [
            "7ComputeNode-optional-7.6.EUS:qemu-img-10:1.5.3-160.el7_6.5.x86_64",
            "7ComputeNode-optional-7.6.EUS:qemu-kvm-10:1.5.3-160.el7_6.5.src",
            "7ComputeNode-optional-7.6.EUS:qemu-kvm-10:1.5.3-160.el7_6.5.x86_64",
            "7ComputeNode-optional-7.6.EUS:qemu-kvm-common-10:1.5.3-160.el7_6.5.x86_64",
            "7ComputeNode-optional-7.6.EUS:qemu-kvm-debuginfo-10:1.5.3-160.el7_6.5.x86_64",
            "7ComputeNode-optional-7.6.EUS:qemu-kvm-tools-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-img-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-kvm-10:1.5.3-160.el7_6.5.src",
            "7Server-7.6.EUS:qemu-kvm-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-kvm-common-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-kvm-debuginfo-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-kvm-tools-10:1.5.3-160.el7_6.5.x86_64"
          ]
        }
      ],
      "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": [
            "7ComputeNode-optional-7.6.EUS:qemu-img-10:1.5.3-160.el7_6.5.x86_64",
            "7ComputeNode-optional-7.6.EUS:qemu-kvm-10:1.5.3-160.el7_6.5.src",
            "7ComputeNode-optional-7.6.EUS:qemu-kvm-10:1.5.3-160.el7_6.5.x86_64",
            "7ComputeNode-optional-7.6.EUS:qemu-kvm-common-10:1.5.3-160.el7_6.5.x86_64",
            "7ComputeNode-optional-7.6.EUS:qemu-kvm-debuginfo-10:1.5.3-160.el7_6.5.x86_64",
            "7ComputeNode-optional-7.6.EUS:qemu-kvm-tools-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-img-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-kvm-10:1.5.3-160.el7_6.5.src",
            "7Server-7.6.EUS:qemu-kvm-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-kvm-common-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-kvm-debuginfo-10:1.5.3-160.el7_6.5.x86_64",
            "7Server-7.6.EUS:qemu-kvm-tools-10:1.5.3-160.el7_6.5.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "hw: TSX Transaction Asynchronous Abort (TAA)"
    }
  ]
}

cve-2019-11135

Vulnerability from cvelistv5

Published

2019-11-14 18:19

Modified

2024-08-04 22:48

Severity ?

Summary

TSX Asynchronous Abort condition on some CPUs utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access.

References

▼	URL	Tags
	https://seclists.org/bugtraq/2019/Nov/26	mailing-list, x_refsource_BUGTRAQ
	http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00046.html	vendor-advisory, x_refsource_SUSE
	http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00045.html	vendor-advisory, x_refsource_SUSE
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I5WWPW4BSZDDW7VHU427XTVXV7ROOFFW/	vendor-advisory, x_refsource_FEDORA
	https://access.redhat.com/errata/RHSA-2019:3936	vendor-advisory, x_refsource_REDHAT
	https://usn.ubuntu.com/4186-2/	vendor-advisory, x_refsource_UBUNTU
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZYATWNUGHRBG6I3TC24YHP5Y3J7I6KH/	vendor-advisory, x_refsource_FEDORA
	http://www.openwall.com/lists/oss-security/2019/12/10/3	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2019/12/10/4	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2019/12/11/1	mailing-list, x_refsource_MLIST
	https://seclists.org/bugtraq/2019/Dec/28	mailing-list, x_refsource_BUGTRAQ
	https://lists.debian.org/debian-lts-announce/2019/12/msg00035.html	mailing-list, x_refsource_MLIST
	http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00042.html	vendor-advisory, x_refsource_SUSE
	https://access.redhat.com/errata/RHSA-2020:0026	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2020:0028	vendor-advisory, x_refsource_REDHAT
	https://www.debian.org/security/2020/dsa-4602	vendor-advisory, x_refsource_DEBIAN
	https://seclists.org/bugtraq/2020/Jan/21	mailing-list, x_refsource_BUGTRAQ
	https://access.redhat.com/errata/RHSA-2020:0204	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2020:0279	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2020:0366	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2020:0555	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2020:0666	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2020:0730	vendor-advisory, x_refsource_REDHAT
	https://security.gentoo.org/glsa/202003-56	vendor-advisory, x_refsource_GENTOO
	https://www.oracle.com/security-alerts/cpujan2021.html	x_refsource_MISC
	https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00270.html	x_refsource_MISC
	https://support.f5.com/csp/article/K02912734?utm_source=f5support&amp%3Butm_medium=RSS	x_refsource_CONFIRM
	http://packetstormsecurity.com/files/155375/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html	x_refsource_MISC
	https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03968en_us	x_refsource_CONFIRM
	https://kc.mcafee.com/corporate/index?page=content&id=SB10306	x_refsource_CONFIRM

Impacted products

▼	Vendor	Product
	n/a	2019.2 IPU – TSX Asynchronous Abort

Show details on NVD website

JSON

To clipboard

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          "vendor": "n/a",
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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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