rhsa-2017_0083
Vulnerability from csaf_redhat
Published
2017-01-17 17:53
Modified
2024-11-14 19:58
Summary
Red Hat Security Advisory: qemu-kvm security and bug fix update
Notes
Topic
An update for qemu-kvm is now available for Red Hat Enterprise Linux 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
Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm packages provide the user-space component for running virtual machines using KVM.
Security Fix(es):
* An out-of-bounds read-access flaw was found in the QEMU emulator built with IP checksum routines. The flaw could occur when computing a TCP/UDP packet's checksum, because a QEMU function used the packet's payload length without checking against the data buffer's size. A user inside a guest could use this flaw to crash the QEMU process (denial of service). (CVE-2016-2857)
Red Hat would like to thank Ling Liu (Qihoo 360 Inc.) for reporting this issue.
Bug Fix(es):
* Previously, rebooting a guest virtual machine more than 128 times in a short period of time caused the guest to shut down instead of rebooting, because the virtqueue was not cleaned properly. This update ensures that the virtqueue is cleaned more reliably, which prevents the described problem from occurring. (BZ#1393484)
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.
{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Low" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for qemu-kvm is now available for Red Hat Enterprise Linux 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.", "title": "Topic" }, { "category": "general", "text": "Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm packages provide the user-space component for running virtual machines using KVM.\n\nSecurity Fix(es):\n\n* An out-of-bounds read-access flaw was found in the QEMU emulator built with IP checksum routines. The flaw could occur when computing a TCP/UDP packet\u0027s checksum, because a QEMU function used the packet\u0027s payload length without checking against the data buffer\u0027s size. A user inside a guest could use this flaw to crash the QEMU process (denial of service). (CVE-2016-2857)\n\nRed Hat would like to thank Ling Liu (Qihoo 360 Inc.) for reporting this issue.\n\nBug Fix(es):\n\n* Previously, rebooting a guest virtual machine more than 128 times in a short period of time caused the guest to shut down instead of rebooting, because the virtqueue was not cleaned properly. This update ensures that the virtqueue is cleaned more reliably, which prevents the described problem from occurring. (BZ#1393484)", "title": "Details" }, { "category": "legal_disclaimer", "text": "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.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2017:0083", "url": "https://access.redhat.com/errata/RHSA-2017:0083" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#low", "url": "https://access.redhat.com/security/updates/classification/#low" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#Low", "url": "https://access.redhat.com/security/updates/classification/#Low" }, { "category": "external", "summary": "1296567", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1296567" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2017/rhsa-2017_0083.json" } ], "title": "Red Hat Security Advisory: qemu-kvm security and bug fix update", "tracking": { "current_release_date": "2024-11-14T19:58:43+00:00", "generator": { "date": "2024-11-14T19:58:43+00:00", "engine": { "name": "Red Hat SDEngine", "version": "4.2.1" } }, "id": "RHSA-2017:0083", "initial_release_date": "2017-01-17T17:53:27+00:00", "revision_history": [ { "date": "2017-01-17T17:53:27+00:00", "number": "1", "summary": "Initial version" }, { "date": "2017-01-17T17:53:27+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2024-11-14T19:58:43+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, 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The flaw could occur when computing a TCP/UDP packet\u0027s checksum, because a QEMU function used the packet\u0027s payload length without checking against the data buffer\u0027s size. A user inside a guest could use this flaw to crash the QEMU process (denial of service).", "title": "Vulnerability description" }, { "category": "summary", "text": "Qemu: net: out of bounds read in net_checksum_calculate()", "title": "Vulnerability summary" }, { "category": "other", "text": "This has been rated as having Low security impact and is not currently\nplanned to be addressed in future updates. For additional information, refer\nto the Red Hat Enterprise Linux Life Cycle:\nhttps://access.redhat.com/support/policy/updates/errata/.", "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": [ "7Client-7.3.Z:qemu-img-10:1.5.3-126.el7_3.3.ppc64", "7Client-7.3.Z:qemu-img-10:1.5.3-126.el7_3.3.ppc64le", "7Client-7.3.Z:qemu-img-10:1.5.3-126.el7_3.3.x86_64", "7Client-7.3.Z:qemu-kvm-10:1.5.3-126.el7_3.3.src", "7Client-7.3.Z:qemu-kvm-10:1.5.3-126.el7_3.3.x86_64", "7Client-7.3.Z:qemu-kvm-common-10:1.5.3-126.el7_3.3.x86_64", "7Client-7.3.Z:qemu-kvm-debuginfo-10:1.5.3-126.el7_3.3.ppc64", "7Client-7.3.Z:qemu-kvm-debuginfo-10:1.5.3-126.el7_3.3.ppc64le", "7Client-7.3.Z:qemu-kvm-debuginfo-10:1.5.3-126.el7_3.3.x86_64", "7Client-7.3.Z:qemu-kvm-tools-10:1.5.3-126.el7_3.3.x86_64", "7ComputeNode-optional-7.3.Z:qemu-img-10:1.5.3-126.el7_3.3.ppc64", "7ComputeNode-optional-7.3.Z:qemu-img-10:1.5.3-126.el7_3.3.ppc64le", "7ComputeNode-optional-7.3.Z:qemu-img-10:1.5.3-126.el7_3.3.x86_64", "7ComputeNode-optional-7.3.Z:qemu-kvm-10:1.5.3-126.el7_3.3.src", "7ComputeNode-optional-7.3.Z:qemu-kvm-10:1.5.3-126.el7_3.3.x86_64", "7ComputeNode-optional-7.3.Z:qemu-kvm-common-10:1.5.3-126.el7_3.3.x86_64", "7ComputeNode-optional-7.3.Z:qemu-kvm-debuginfo-10:1.5.3-126.el7_3.3.ppc64", "7ComputeNode-optional-7.3.Z:qemu-kvm-debuginfo-10:1.5.3-126.el7_3.3.ppc64le", "7ComputeNode-optional-7.3.Z:qemu-kvm-debuginfo-10:1.5.3-126.el7_3.3.x86_64", "7ComputeNode-optional-7.3.Z:qemu-kvm-tools-10:1.5.3-126.el7_3.3.x86_64", "7Server-7.3.Z:qemu-img-10:1.5.3-126.el7_3.3.ppc64", "7Server-7.3.Z:qemu-img-10:1.5.3-126.el7_3.3.ppc64le", "7Server-7.3.Z:qemu-img-10:1.5.3-126.el7_3.3.x86_64", "7Server-7.3.Z:qemu-kvm-10:1.5.3-126.el7_3.3.src", "7Server-7.3.Z:qemu-kvm-10:1.5.3-126.el7_3.3.x86_64", "7Server-7.3.Z:qemu-kvm-common-10:1.5.3-126.el7_3.3.x86_64", "7Server-7.3.Z:qemu-kvm-debuginfo-10:1.5.3-126.el7_3.3.ppc64", "7Server-7.3.Z:qemu-kvm-debuginfo-10:1.5.3-126.el7_3.3.ppc64le", "7Server-7.3.Z:qemu-kvm-debuginfo-10:1.5.3-126.el7_3.3.x86_64", "7Server-7.3.Z:qemu-kvm-tools-10:1.5.3-126.el7_3.3.x86_64", "7Workstation-7.3.Z:qemu-img-10:1.5.3-126.el7_3.3.ppc64", "7Workstation-7.3.Z:qemu-img-10:1.5.3-126.el7_3.3.ppc64le", "7Workstation-7.3.Z:qemu-img-10:1.5.3-126.el7_3.3.x86_64", "7Workstation-7.3.Z:qemu-kvm-10:1.5.3-126.el7_3.3.src", "7Workstation-7.3.Z:qemu-kvm-10:1.5.3-126.el7_3.3.x86_64", "7Workstation-7.3.Z:qemu-kvm-common-10:1.5.3-126.el7_3.3.x86_64", "7Workstation-7.3.Z:qemu-kvm-debuginfo-10:1.5.3-126.el7_3.3.ppc64", "7Workstation-7.3.Z:qemu-kvm-debuginfo-10:1.5.3-126.el7_3.3.ppc64le", "7Workstation-7.3.Z:qemu-kvm-debuginfo-10:1.5.3-126.el7_3.3.x86_64", "7Workstation-7.3.Z:qemu-kvm-tools-10:1.5.3-126.el7_3.3.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2016-2857" }, { "category": "external", "summary": "RHBZ#1296567", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1296567" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2016-2857", "url": "https://www.cve.org/CVERecord?id=CVE-2016-2857" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2016-2857", "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-2857" } ], "release_date": "2016-02-17T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2017-01-17T17:53:27+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. 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Sightings
Author | Source | Type | Date |
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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.