rhsa-2012_1325
Vulnerability from csaf_redhat
Published
2012-10-02 17:09
Modified
2024-11-22 05:47
Summary
Red Hat Security Advisory: rhev-hypervisor6 security and bug fix update

Notes

Topic
An updated rhev-hypervisor6 package that fixes multiple security issues and one bug is now available. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
Details
The rhev-hypervisor6 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 flaw was found in the way QEMU handled VT100 terminal escape sequences when emulating certain character devices. A guest user with privileges to write to a character device that is emulated on the host using a virtual console back-end could use this flaw to crash the qemu-kvm process on the host or, possibly, escalate their privileges on the host. (CVE-2012-3515) This flaw did not affect the default use of Red Hat Enterprise Virtualization Hypervisor: it is not possible to add a device that uses a virtual console back-end via Red Hat Enterprise Virtualization Manager. To specify a virtual console back-end for a device and therefore be vulnerable to this issue, the device would have to be created another way, for example, by using a VDSM hook. Note that at this time hooks can only be used on Red Hat Enterprise Linux hosts, not Red Hat Enterprise Virtualization Hypervisor. Multiple integer overflow flaws, leading to stack-based buffer overflows, were found in glibc's functions for converting a string to a numeric representation (strtod(), strtof(), and strtold()). If an application used such a function on attacker controlled input, it could cause the application to crash or, potentially, execute arbitrary code. (CVE-2012-3480) Red Hat would like to thank the Xen project for reporting the CVE-2012-3515 issue. This updated package provides updated components that include fixes for various security issues. These issues have no security impact on Red Hat Enterprise Virtualization Hypervisor itself, however. The security fixes included in this update address the following CVE numbers: CVE-2012-4244 (bind issue) CVE-2012-3524 (dbus issue) CVE-2012-2313, CVE-2012-2384, CVE-2012-2390, CVE-2012-3430, and CVE-2012-3552 (kernel issues) CVE-2012-3445 (libvirt issue) CVE-2011-3102 and CVE-2012-2807 (libxml2 issues) CVE-2011-1202, CVE-2011-3970, CVE-2012-2825, CVE-2012-2870, CVE-2012-2871, and CVE-2012-2893 (libxslt issues) This updated Red Hat Enterprise Virtualization Hypervisor package also fixes the following bug: * Previously, the Manager listed all installed Hypervisor ISO images as available even when they did not support the VDSM compatibility version required by the selected host. The rhev-hypervisor6 package now maintains a text file for each installed ISO image. The file lists the VDSM compatibility versions supported by the relevant ISO image. The Manager uses this information to ensure that only those Hypervisor ISO images that are relevant to the selected host are listed. (BZ#856827) Users of the Red Hat Enterprise Virtualization Hypervisor are advised to upgrade to this updated package, which fixes these issues.
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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{
  "document": {
    "aggregate_severity": {
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      "text": "Important"
    },
    "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 updated rhev-hypervisor6 package that fixes multiple security issues and\none bug is now available.\n\nThe Red Hat Security Response Team has rated this update as having\nimportant security impact. Common Vulnerability Scoring System (CVSS) base\nscores, which give detailed severity ratings, are available for each\nvulnerability from the CVE links in the References section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "The rhev-hypervisor6 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 flaw was found in the way QEMU handled VT100 terminal escape sequences\nwhen emulating certain character devices. A guest user with privileges to\nwrite to a character device that is emulated on the host using a virtual\nconsole back-end could use this flaw to crash the qemu-kvm process on the\nhost or, possibly, escalate their privileges on the host. (CVE-2012-3515)\n\nThis flaw did not affect the default use of Red Hat Enterprise\nVirtualization Hypervisor: it is not possible to add a device that uses a\nvirtual console back-end via Red Hat Enterprise Virtualization Manager.\n\nTo specify a virtual console back-end for a device and therefore be\nvulnerable to this issue, the device would have to be created another way,\nfor example, by using a VDSM hook. Note that at this time hooks can only be\nused on Red Hat Enterprise Linux hosts, not Red Hat Enterprise\nVirtualization Hypervisor.\n\nMultiple integer overflow flaws, leading to stack-based buffer overflows,\nwere found in glibc\u0027s functions for converting a string to a numeric\nrepresentation (strtod(), strtof(), and strtold()). If an application used\nsuch a function on attacker controlled input, it could cause the\napplication to crash or, potentially, execute arbitrary code.\n(CVE-2012-3480)\n\nRed Hat would like to thank the Xen project for reporting the CVE-2012-3515\nissue.\n\nThis updated package provides updated components that include fixes for\nvarious security issues. These issues have no security impact on Red Hat\nEnterprise Virtualization Hypervisor itself, however. The security fixes\nincluded in this update address the following CVE numbers:\n\nCVE-2012-4244 (bind issue)\n\nCVE-2012-3524 (dbus issue)\n\nCVE-2012-2313, CVE-2012-2384, CVE-2012-2390, CVE-2012-3430, and\nCVE-2012-3552 (kernel issues)\n\nCVE-2012-3445 (libvirt issue)\n\nCVE-2011-3102 and CVE-2012-2807 (libxml2 issues)\n\nCVE-2011-1202, CVE-2011-3970, CVE-2012-2825, CVE-2012-2870, CVE-2012-2871,\nand CVE-2012-2893 (libxslt issues)\n\nThis updated Red Hat Enterprise Virtualization Hypervisor package also\nfixes the following bug:\n\n* Previously, the Manager listed all installed Hypervisor ISO images as\navailable even when they did not support the VDSM compatibility version\nrequired by the selected host. The rhev-hypervisor6 package now maintains a\ntext file for each installed ISO image. The file lists the VDSM\ncompatibility versions supported by the relevant ISO image. The Manager\nuses this information to ensure that only those Hypervisor ISO images that\nare relevant to the selected host are listed. (BZ#856827)\n\nUsers of the Red Hat Enterprise Virtualization Hypervisor are advised to\nupgrade to this updated package, which fixes these issues.",
        "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-2012:1325",
        "url": "https://access.redhat.com/errata/RHSA-2012:1325"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html",
        "url": "https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html",
        "url": "https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html"
      },
      {
        "category": "external",
        "summary": "847715",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=847715"
      },
      {
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        "summary": "851252",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=851252"
      },
      {
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        "summary": "856827",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=856827"
      },
      {
        "category": "external",
        "summary": "856830",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=856830"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2012/rhsa-2012_1325.json"
      }
    ],
    "title": "Red Hat Security Advisory: rhev-hypervisor6 security and bug fix update",
    "tracking": {
      "current_release_date": "2024-11-22T05:47:27+00:00",
      "generator": {
        "date": "2024-11-22T05:47:27+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.2.1"
        }
      },
      "id": "RHSA-2012:1325",
      "initial_release_date": "2012-10-02T17:09:00+00:00",
      "revision_history": [
        {
          "date": "2012-10-02T17:09:00+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2012-10-02T17:10:14+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2024-11-22T05:47:27+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": {
                  "name": "RHEV Hypervisor for RHEL-6",
                  "product_id": "6Server-RHEV-Hypervisor",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:6::hypervisor"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Virtualization"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "rhev-hypervisor6-0:6.3-20120926.0.el6_3.noarch",
                "product": {
                  "name": "rhev-hypervisor6-0:6.3-20120926.0.el6_3.noarch",
                  "product_id": "rhev-hypervisor6-0:6.3-20120926.0.el6_3.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/rhev-hypervisor6@6.3-20120926.0.el6_3?arch=noarch"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "noarch"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rhev-hypervisor6-0:6.3-20120926.0.el6_3.noarch as a component of RHEV Hypervisor for RHEL-6",
          "product_id": "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.3-20120926.0.el6_3.noarch"
        },
        "product_reference": "rhev-hypervisor6-0:6.3-20120926.0.el6_3.noarch",
        "relates_to_product_reference": "6Server-RHEV-Hypervisor"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2012-3480",
      "cwe": {
        "id": "CWE-121",
        "name": "Stack-based Buffer Overflow"
      },
      "discovery_date": "2012-08-13T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "847715"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "Multiple integer overflows in the (1) strtod, (2) strtof, (3) strtold, (4) strtod_l, and other unspecified \"related functions\" in stdlib in GNU C Library (aka glibc or libc6) 2.16 allow local users to cause a denial of service (application crash) and possibly execute arbitrary code via a long string, which triggers a stack-based buffer overflow.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "glibc: Integer overflows, leading to stack-based buffer overflows in strto* related routines",
          "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": [
          "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.3-20120926.0.el6_3.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2012-3480"
        },
        {
          "category": "external",
          "summary": "RHBZ#847715",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=847715"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2012-3480",
          "url": "https://www.cve.org/CVERecord?id=CVE-2012-3480"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2012-3480",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2012-3480"
        }
      ],
      "release_date": "2012-08-12T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2012-10-02T17:09:00+00:00",
          "details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/knowledge/articles/11258\n\nTo upgrade Hypervisors in Red Hat Enterprise Virtualization 2.2\nenvironments using the disk image provided by this package, refer to: \n\nhttps://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html\n\nTo upgrade Hypervisors in Red Hat Enterprise Virtualization 3.0\nenvironments using the disk image provided by this package, refer to:\n\nhttps://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html",
          "product_ids": [
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.3-20120926.0.el6_3.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2012:1325"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.4,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "products": [
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.3-20120926.0.el6_3.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "glibc: Integer overflows, leading to stack-based buffer overflows in strto* related routines"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Xen project"
          ]
        }
      ],
      "cve": "CVE-2012-3515",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "discovery_date": "2012-08-23T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "851252"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "Qemu, as used in Xen 4.0, 4.1 and possibly other products, when emulating certain devices with a virtual console backend, allows local OS guest users to gain privileges via a crafted escape VT100 sequence that triggers the overwrite of a \"device model\u0027s address space.\"",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "qemu: VT100 emulation vulnerability",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue did affect the versions of xen package as shipped with Red Hat\nEnterprise Linux 5.\n\nThis issue did affect the versions of kvm package as shipped with Red Hat\nEnterprise Linux 5.\n\nThis issue did affect the versions of qemu-kvm package as shipped with Red Hat\nEnterprise Linux 6.",
          "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-hypervisor6-0:6.3-20120926.0.el6_3.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2012-3515"
        },
        {
          "category": "external",
          "summary": "RHBZ#851252",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=851252"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2012-3515",
          "url": "https://www.cve.org/CVERecord?id=CVE-2012-3515"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2012-3515",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2012-3515"
        }
      ],
      "release_date": "2012-09-05T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2012-10-02T17:09:00+00:00",
          "details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/knowledge/articles/11258\n\nTo upgrade Hypervisors in Red Hat Enterprise Virtualization 2.2\nenvironments using the disk image provided by this package, refer to: \n\nhttps://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html\n\nTo upgrade Hypervisors in Red Hat Enterprise Virtualization 3.0\nenvironments using the disk image provided by this package, refer to:\n\nhttps://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html",
          "product_ids": [
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.3-20120926.0.el6_3.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2012:1325"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "ADJACENT_NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 7.4,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:A/AC:M/Au:S/C:C/I:C/A:C",
            "version": "2.0"
          },
          "products": [
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.3-20120926.0.el6_3.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "qemu: VT100 emulation vulnerability"
    }
  ]
}


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