rhsa-2017_0549
Vulnerability from csaf_redhat
Published
2017-03-16 15:26
Modified
2024-11-14 21:42
Summary
Red Hat Security Advisory: redhat-virtualization-host security and bug fix update

Notes

Topic
An update for imgbased, redhat-release-virtualization-host, and redhat-virtualization-host is now available for RHEV 4.X, RHEV-H, and Agents for RHEL-7. 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
The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. The following packages have been upgraded to a later upstream version: redhat-release-virtualization-host (4.0), imgbased (0.8.16), redhat-virtualization-host (4.0). (BZ#1410848, BZ#1430244) Security Fix(es): * A vulnerability was discovered in SPICE in the server's protocol handling. An authenticated attacker could send crafted messages to the SPICE server causing a heap overflow leading to a crash or possible code execution. (CVE-2016-9577) * A vulnerability was discovered in SPICE in the server's protocol handling. An attacker able to connect to the SPICE server could send crafted messages which would cause the process to crash. (CVE-2016-9578) These issues were discovered by Frediano Ziglio (Red Hat). Bug Fix(es): * Previously, imgbased blindly copied /etc from old layers into new layers in order to keep configuration changes between upgrades. This meant that imgbased's behavior differed from RPM, in that unmodified configuration files would be preserved across imgbased upgrades whereas 'yum upgrade' of the same packages would have replaced them. Now, imgbased compares the sums of files to the originals kept per-layer in /usr/share/factory/etc so that unmodified configuration files are now handled appropriately. (BZ#1418179) * Previously, some earlier versions of Red Hat Virtualization Host (RHVH) repeatedly prompted for upgrades, even when the most recent version was already installed. This was caused by the RHVH image containing a placeholder package that was made obsolete in order to upgrade. However, the package that was used to upgrade was not propagated to the rpmdb on the new image. Now, upgrading includes the update package in the rpmdb on the new image. (BZ#1422476) * With this update, Red Hat Virtualization Host (RHVH) now includes the 'screen' package. Previously, ovirt-hosted-engine-setup invoked from a CLI warned users that the 'screen' package was not installed. Though this was not an explicit requirement when using cockpit, including it provides a better experience if using the CLI. (BZ#1403729)
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.


To clipboard 

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        "text": "The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host\u0027s resources and performing administrative tasks.\n\nThe following packages have been upgraded to a later upstream version: redhat-release-virtualization-host (4.0), imgbased (0.8.16), redhat-virtualization-host (4.0). (BZ#1410848, BZ#1430244)\n\nSecurity Fix(es):\n\n* A vulnerability was discovered in SPICE in the server\u0027s protocol handling. An authenticated attacker could send crafted messages to the SPICE server causing a heap overflow leading to a crash or possible code execution. (CVE-2016-9577)\n\n* A vulnerability was discovered in SPICE in the server\u0027s protocol handling. An attacker able to connect to the SPICE server could send crafted messages which would cause the process to crash. (CVE-2016-9578)\n\nThese issues were discovered by Frediano Ziglio (Red Hat).\n\nBug Fix(es):\n\n* Previously, imgbased blindly copied /etc from old layers into new layers in order to keep configuration changes between upgrades. This meant that imgbased\u0027s behavior differed from RPM, in that unmodified configuration files would be preserved across imgbased upgrades whereas \u0027yum upgrade\u0027 of the same packages would have replaced them. Now, imgbased compares the sums of files to the originals kept per-layer in /usr/share/factory/etc so that unmodified configuration files are now handled appropriately. (BZ#1418179)\n\n* Previously, some earlier versions of Red Hat Virtualization Host (RHVH) repeatedly prompted for upgrades, even when the most recent version was already installed. This was caused by the RHVH image containing a placeholder package that was made obsolete in order to upgrade. However, the package that was used to upgrade was not propagated to the rpmdb on the new image. Now, upgrading includes the update package in the rpmdb on the new image. (BZ#1422476)\n\n* With this update, Red Hat Virtualization Host (RHVH) now includes the \u0027screen\u0027 package. Previously, ovirt-hosted-engine-setup invoked from a CLI warned users that the \u0027screen\u0027 package was not installed. Though this was not an explicit requirement when using cockpit, including it provides a better experience if using the CLI. (BZ#1403729)",
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Frediano Ziglio"
          ],
          "organization": "Red Hat",
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2016-9577",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2016-12-02T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1401603"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A vulnerability was discovered in SPICE in the server\u0027s protocol handling. An authenticated attacker could send crafted messages to the SPICE server causing a heap overflow leading to a crash or possible code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "spice: Buffer overflow in main_channel_alloc_msg_rcv_buf when reading large messages",
          "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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      },
      "references": [
        {
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2016-9577"
        },
        {
          "category": "external",
          "summary": "RHBZ#1401603",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1401603"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2016-9577",
          "url": "https://www.cve.org/CVERecord?id=CVE-2016-9577"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2016-9577",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-9577"
        }
      ],
      "release_date": "2017-02-06T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2017-03-16T15:26:25+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",
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      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:P",
            "version": "2.0"
          },
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "7Server-RHEV-4-Hypervisor-7:redhat-virtualization-host-0:4.0-20170307.1.el7_3.src",
            "7Server-RHEV-4-Hypervisor-7:redhat-virtualization-host-image-update-0:4.0-20170307.1.el7_3.noarch",
            "7Server-RHEV-4-HypervisorBuild-7:imgbased-0:0.8.16-0.1.el7ev.noarch",
            "7Server-RHEV-4-HypervisorBuild-7:imgbased-0:0.8.16-0.1.el7ev.src",
            "7Server-RHEV-4-HypervisorBuild-7:redhat-release-virtualization-host-0:4.0-7.1.el7.src",
            "7Server-RHEV-4-HypervisorBuild-7:redhat-release-virtualization-host-0:4.0-7.1.el7.x86_64",
            "7Server-RHEV-4-HypervisorBuild-7:redhat-virtualization-host-image-update-placeholder-0:4.0-7.1.el7.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "spice: Buffer overflow in main_channel_alloc_msg_rcv_buf when reading large messages"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Frediano Ziglio"
          ],
          "organization": "Red Hat",
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2016-9578",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2016-11-28T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1399566"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A vulnerability was discovered in SPICE in the server\u0027s protocol handling. An attacker able to connect to the SPICE server could send crafted messages which would cause the process to crash.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "spice: Remote DoS via crafted message",
          "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"
        }
      ],
      "product_status": {
        "fixed": [
          "7Server-RHEV-4-Hypervisor-7:redhat-virtualization-host-0:4.0-20170307.1.el7_3.src",
          "7Server-RHEV-4-Hypervisor-7:redhat-virtualization-host-image-update-0:4.0-20170307.1.el7_3.noarch",
          "7Server-RHEV-4-HypervisorBuild-7:imgbased-0:0.8.16-0.1.el7ev.noarch",
          "7Server-RHEV-4-HypervisorBuild-7:imgbased-0:0.8.16-0.1.el7ev.src",
          "7Server-RHEV-4-HypervisorBuild-7:redhat-release-virtualization-host-0:4.0-7.1.el7.src",
          "7Server-RHEV-4-HypervisorBuild-7:redhat-release-virtualization-host-0:4.0-7.1.el7.x86_64",
          "7Server-RHEV-4-HypervisorBuild-7:redhat-virtualization-host-image-update-placeholder-0:4.0-7.1.el7.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2016-9578"
        },
        {
          "category": "external",
          "summary": "RHBZ#1399566",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1399566"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2016-9578",
          "url": "https://www.cve.org/CVERecord?id=CVE-2016-9578"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2016-9578",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-9578"
        }
      ],
      "release_date": "2017-02-06T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2017-03-16T15:26:25+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",
          "product_ids": [
            "7Server-RHEV-4-Hypervisor-7:redhat-virtualization-host-0:4.0-20170307.1.el7_3.src",
            "7Server-RHEV-4-Hypervisor-7:redhat-virtualization-host-image-update-0:4.0-20170307.1.el7_3.noarch",
            "7Server-RHEV-4-HypervisorBuild-7:imgbased-0:0.8.16-0.1.el7ev.noarch",
            "7Server-RHEV-4-HypervisorBuild-7:imgbased-0:0.8.16-0.1.el7ev.src",
            "7Server-RHEV-4-HypervisorBuild-7:redhat-release-virtualization-host-0:4.0-7.1.el7.src",
            "7Server-RHEV-4-HypervisorBuild-7:redhat-release-virtualization-host-0:4.0-7.1.el7.x86_64",
            "7Server-RHEV-4-HypervisorBuild-7:redhat-virtualization-host-image-update-placeholder-0:4.0-7.1.el7.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2017:0549"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "products": [
            "7Server-RHEV-4-Hypervisor-7:redhat-virtualization-host-0:4.0-20170307.1.el7_3.src",
            "7Server-RHEV-4-Hypervisor-7:redhat-virtualization-host-image-update-0:4.0-20170307.1.el7_3.noarch",
            "7Server-RHEV-4-HypervisorBuild-7:imgbased-0:0.8.16-0.1.el7ev.noarch",
            "7Server-RHEV-4-HypervisorBuild-7:imgbased-0:0.8.16-0.1.el7ev.src",
            "7Server-RHEV-4-HypervisorBuild-7:redhat-release-virtualization-host-0:4.0-7.1.el7.src",
            "7Server-RHEV-4-HypervisorBuild-7:redhat-release-virtualization-host-0:4.0-7.1.el7.x86_64",
            "7Server-RHEV-4-HypervisorBuild-7:redhat-virtualization-host-image-update-placeholder-0:4.0-7.1.el7.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "spice: Remote DoS via crafted message"
    }
  ]
}


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