rhsa-2016_0277
Vulnerability from csaf_redhat
Published
2016-02-19 22:19
Modified
2024-11-14 15:36
Summary
Red Hat Security Advisory: rhev-hypervisor security update

Notes

Topic
Updated rhev-hypervisor packages that fix one security issue are now available. Red Hat Product Security has rated this update as having Critical security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.
Details
The rhev-hypervisor package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions. A stack-based buffer overflow was found in the way the libresolv library performed dual A/AAAA DNS queries. A remote attacker could create a specially crafted DNS response which could cause libresolv to crash or, potentially, execute code with the permissions of the user running the library. Note: this issue is only exposed when libresolv is called from the nss_dns NSS service module. (CVE-2015-7547) This issue was discovered by the Google Security Team and Red Hat. Users of Red Hat Enterprise Virtualization Hypervisor are advised to upgrade to these updated packages.
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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{
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      "text": "Critical"
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    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
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        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Updated rhev-hypervisor packages that fix one security issue are now\navailable.\n\nRed Hat Product Security has rated this update as having Critical security\nimpact. A Common Vulnerability Scoring System (CVSS) base score, which\ngives a detailed severity rating, is available from the CVE link in the\nReferences section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "The rhev-hypervisor package provides a Red Hat Enterprise Virtualization\nHypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor\nis a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes\neverything necessary to run and manage virtual machines: A subset of the\nRed Hat Enterprise Linux operating environment and the Red Hat Enterprise\nVirtualization Agent.\n\nNote: Red Hat Enterprise Virtualization Hypervisor is only available for\nthe Intel 64 and AMD64 architectures with virtualization extensions.\n\nA stack-based buffer overflow was found in the way the libresolv library\nperformed dual A/AAAA DNS queries. A remote attacker could create a\nspecially crafted DNS response which could cause libresolv to crash or,\npotentially, execute code with the permissions of the user running the\nlibrary. Note: this issue is only exposed when libresolv is called from the\nnss_dns NSS service module. (CVE-2015-7547)\n\nThis issue was discovered by the Google Security Team and Red Hat.\n\nUsers of Red Hat Enterprise Virtualization Hypervisor are advised to\nupgrade to these updated packages.",
        "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"
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        "summary": "1293532",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1293532"
      },
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        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2016/rhsa-2016_0277.json"
      }
    ],
    "title": "Red Hat Security Advisory: rhev-hypervisor security update",
    "tracking": {
      "current_release_date": "2024-11-14T15:36:19+00:00",
      "generator": {
        "date": "2024-11-14T15:36:19+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.2.0"
        }
      },
      "id": "RHSA-2016:0277",
      "initial_release_date": "2016-02-19T22:19:14+00:00",
      "revision_history": [
        {
          "date": "2016-02-19T22:19:14+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2016-02-19T22:19:14+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2024-11-14T15:36:19+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "RHEV Hypervisor for RHEL-6",
                "product": {
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                  "product_id": "6Server-RHEV-Hypervisor",
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      },
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        },
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  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Google Security Team"
          ],
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2015-7547",
      "cwe": {
        "id": "CWE-121",
        "name": "Stack-based Buffer Overflow"
      },
      "discovery_date": "2015-12-11T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1293532"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A stack-based buffer overflow was found in the way the libresolv library performed dual A/AAAA DNS queries. A remote attacker could create a specially crafted DNS response which could cause libresolv to crash or, potentially, execute code with the permissions of the user running the library. Note: this issue is only exposed when libresolv is called from the nss_dns NSS service module.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "glibc: getaddrinfo stack-based buffer overflow",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "After updating the glibc package on affected systems, it is strongly recommended to reboot the system or restart all the affected services. For more information please refer to: https://access.redhat.com/articles/2161461",
          "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": [
          "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.7-20160104.2.el6ev.noarch",
          "6Server-RHEV-Hypervisor:rhev-hypervisor7-0:7.2-20160105.2.el6ev.noarch",
          "6Server-RHEV-Hypervisor:rhev-hypervisor7-0:7.2-20160105.2.el6ev.src",
          "7Server-RHEV-Hypervisor-7:rhev-hypervisor7-0:7.2-20160105.2.el7ev.noarch",
          "7Server-RHEV-Hypervisor-7:rhev-hypervisor7-0:7.2-20160105.2.el7ev.src"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2015-7547"
        },
        {
          "category": "external",
          "summary": "RHBZ#1293532",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1293532"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2015-7547",
          "url": "https://www.cve.org/CVERecord?id=CVE-2015-7547"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2015-7547",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-7547"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/articles/2161461",
          "url": "https://access.redhat.com/articles/2161461"
        }
      ],
      "release_date": "2016-02-16T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2016-02-19T22:19:14+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/11258",
          "product_ids": [
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.7-20160104.2.el6ev.noarch",
            "6Server-RHEV-Hypervisor:rhev-hypervisor7-0:7.2-20160105.2.el6ev.noarch",
            "6Server-RHEV-Hypervisor:rhev-hypervisor7-0:7.2-20160105.2.el6ev.src",
            "7Server-RHEV-Hypervisor-7:rhev-hypervisor7-0:7.2-20160105.2.el7ev.noarch",
            "7Server-RHEV-Hypervisor-7:rhev-hypervisor7-0:7.2-20160105.2.el7ev.src"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2016:0277"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.8,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "products": [
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.7-20160104.2.el6ev.noarch",
            "6Server-RHEV-Hypervisor:rhev-hypervisor7-0:7.2-20160105.2.el6ev.noarch",
            "6Server-RHEV-Hypervisor:rhev-hypervisor7-0:7.2-20160105.2.el6ev.src",
            "7Server-RHEV-Hypervisor-7:rhev-hypervisor7-0:7.2-20160105.2.el7ev.noarch",
            "7Server-RHEV-Hypervisor-7:rhev-hypervisor7-0:7.2-20160105.2.el7ev.src"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Critical"
        }
      ],
      "title": "glibc: getaddrinfo stack-based buffer overflow"
    }
  ]
}


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