RHSA-2012:0109

Vulnerability from csaf_redhat - Published: 2012-02-15 16:01 - Updated: 2026-01-28 22:34
Summary
Red Hat Security Advisory: rhev-hypervisor6 security and bug fix update
Severity
Important
Notes
Topic: An updated rhev-hypervisor6 package that fixes multiple security issues and various bugs 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 heap overflow flaw was found in the way QEMU-KVM emulated the e1000 network interface card. A privileged guest user in a virtual machine whose network interface is configured to use the e1000 emulated driver could use this flaw to crash the host or, possibly, escalate their privileges on the host. (CVE-2012-0029) An information leak flaw was found in the SSL 3.0 protocol implementation in OpenSSL. Incorrect initialization of SSL record padding bytes could cause an SSL client or server to send a limited amount of possibly sensitive data to its SSL peer via the encrypted connection. (CVE-2011-4576) A denial of service flaw was found in the RFC 3779 implementation in OpenSSL. A remote attacker could use this flaw to make an application using OpenSSL exit unexpectedly by providing a specially-crafted X.509 certificate that has malformed RFC 3779 extension data. (CVE-2011-4577) It was discovered that OpenSSL did not limit the number of TLS/SSL handshake restarts required to support Server Gated Cryptography. A remote attacker could use this flaw to make a TLS/SSL server using OpenSSL consume an excessive amount of CPU by continuously restarting the handshake. (CVE-2011-4619) Red Hat would like to thank Nicolae Mogoreanu for reporting CVE-2012-0029. 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-2009-5029 and CVE-2011-4609 (glibc issues) CVE-2012-0056 (kernel issue) CVE-2011-4108 and CVE-2012-0050 (openssl issues) This update also fixes the following bugs: * Previously, it was possible to begin a Hypervisor installation without any valid disks to install to. Now, if no valid disks are found for Hypervisor installation, a message is displayed informing the user that there are no valid disks for installation. (BZ#781471) * Previously, the user interface for the Hypervisor did not indicate whether the system was registered with Red Hat Network (RHN) Classic or RHN Satellite. As a result, customers could not easily determine the registration status of their Hypervisor installations. The TUI has been updated to display the registration status of the Hypervisor. (BZ#788223) * Previously, autoinstall would fail if the firstboot or reinstall options were passed but local_boot or upgrade were not passed. Now, neither the local_boot or upgrade parameters are required for autoinstall. (BZ#788225) 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.
CVE-2011-4576

The SSL 3.0 implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly initialize data structures for block cipher padding, which might allow remote attackers to obtain sensitive information by decrypting the padding data sent by an SSL peer.

4.3 ()
AV:N/AC:M/Au:N/C:P/I:N/A:N
Vendor Fix Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 https://access.redhat.com/errata/RHSA-2012:0109
CVE-2011-4577

OpenSSL before 0.9.8s and 1.x before 1.0.0f, when RFC 3779 support is enabled, allows remote attackers to cause a denial of service (assertion failure) via an X.509 certificate containing certificate-extension data associated with (1) IP address blocks or (2) Autonomous System (AS) identifiers.

4.3 ()
AV:N/AC:M/Au:N/C:N/I:N/A:P
Vendor Fix Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 https://access.redhat.com/errata/RHSA-2012:0109
CVE-2011-4619

The Server Gated Cryptography (SGC) implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly handle handshake restarts, which allows remote attackers to cause a denial of service (CPU consumption) via unspecified vectors.

4.3 ()
AV:N/AC:M/Au:N/C:N/I:N/A:P
Vendor Fix Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 https://access.redhat.com/errata/RHSA-2012:0109
CVE-2012-0029

Heap-based buffer overflow in the process_tx_desc function in the e1000 emulation (hw/e1000.c) in qemu-kvm 0.12, and possibly other versions, allows guest OS users to cause a denial of service (QEMU crash) and possibly execute arbitrary code via crafted legacy mode packets.

7.4 ()
AV:A/AC:M/Au:S/C:C/I:C/A:C
CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Vendor Fix Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 https://access.redhat.com/errata/RHSA-2012:0109
References
https://access.redhat.com/errata/RHSA-2012:0109 self
https://access.redhat.com/security/updates/classi… external
http://docs.redhat.com/docs/en-US/Red_Hat_Enterpr… external
https://bugzilla.redhat.com/show_bug.cgi?id=771775 external
https://bugzilla.redhat.com/show_bug.cgi?id=771778 external
https://bugzilla.redhat.com/show_bug.cgi?id=771780 external
https://bugzilla.redhat.com/show_bug.cgi?id=772075 external
https://bugzilla.redhat.com/show_bug.cgi?id=781472 external
https://bugzilla.redhat.com/show_bug.cgi?id=788225 external
https://bugzilla.redhat.com/show_bug.cgi?id=788226 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2011-4576 self
https://bugzilla.redhat.com/show_bug.cgi?id=771775 external
https://www.cve.org/CVERecord?id=CVE-2011-4576 external
https://nvd.nist.gov/vuln/detail/CVE-2011-4576 external
https://access.redhat.com/security/cve/CVE-2011-4577 self
https://bugzilla.redhat.com/show_bug.cgi?id=771778 external
https://www.cve.org/CVERecord?id=CVE-2011-4577 external
https://nvd.nist.gov/vuln/detail/CVE-2011-4577 external
https://access.redhat.com/security/cve/CVE-2011-4619 self
https://bugzilla.redhat.com/show_bug.cgi?id=771780 external
https://www.cve.org/CVERecord?id=CVE-2011-4619 external
https://nvd.nist.gov/vuln/detail/CVE-2011-4619 external
https://access.redhat.com/security/cve/CVE-2012-0029 self
https://bugzilla.redhat.com/show_bug.cgi?id=772075 external
https://www.cve.org/CVERecord?id=CVE-2012-0029 external
https://nvd.nist.gov/vuln/detail/CVE-2012-0029 external
Acknowledgments
Nicolae Mogoreanu
To clipboard 

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          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.noarch",
          "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.src",
          "6Server-RHEV-Hypervisor:rhev-hypervisor6-tools-0:6.2-20120209.0.el6_2.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2011-4577"
        },
        {
          "category": "external",
          "summary": "RHBZ#771778",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=771778"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2011-4577",
          "url": "https://www.cve.org/CVERecord?id=CVE-2011-4577"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-4577",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-4577"
        }
      ],
      "release_date": "2012-01-04T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2012-02-15T16:01:00+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/kb/docs/DOC-11259",
          "product_ids": [
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.noarch",
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.src",
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-tools-0:6.2-20120209.0.el6_2.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2012:0109"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.3,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "products": [
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.noarch",
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.src",
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-tools-0:6.2-20120209.0.el6_2.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "openssl: malformed RFC 3779 data can cause assertion failures"
    },
    {
      "cve": "CVE-2011-4619",
      "discovery_date": "2012-01-04T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "771780"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "The Server Gated Cryptography (SGC) implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly handle handshake restarts, which allows remote attackers to cause a denial of service (CPU consumption) via unspecified vectors.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "openssl: SGC restart DoS attack",
          "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-hypervisor6-0:6.2-20120209.0.el6_2.noarch",
          "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.src",
          "6Server-RHEV-Hypervisor:rhev-hypervisor6-tools-0:6.2-20120209.0.el6_2.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2011-4619"
        },
        {
          "category": "external",
          "summary": "RHBZ#771780",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=771780"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2011-4619",
          "url": "https://www.cve.org/CVERecord?id=CVE-2011-4619"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-4619",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-4619"
        }
      ],
      "release_date": "2012-01-04T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2012-02-15T16:01:00+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/kb/docs/DOC-11259",
          "product_ids": [
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.noarch",
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.src",
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-tools-0:6.2-20120209.0.el6_2.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2012:0109"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.3,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "products": [
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.noarch",
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.src",
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-tools-0:6.2-20120209.0.el6_2.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "openssl: SGC restart DoS attack"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Nicolae Mogoreanu"
          ]
        }
      ],
      "cve": "CVE-2012-0029",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "discovery_date": "2012-01-05T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "772075"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "Heap-based buffer overflow in the process_tx_desc function in the e1000 emulation (hw/e1000.c) in qemu-kvm 0.12, and possibly other versions, allows guest OS users to cause a denial of service (QEMU crash) and possibly execute arbitrary code via crafted legacy mode packets.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "qemu: e1000: process_tx_desc legacy mode packets heap overflow",
          "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-hypervisor6-0:6.2-20120209.0.el6_2.noarch",
          "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.src",
          "6Server-RHEV-Hypervisor:rhev-hypervisor6-tools-0:6.2-20120209.0.el6_2.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2012-0029"
        },
        {
          "category": "external",
          "summary": "RHBZ#772075",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=772075"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2012-0029",
          "url": "https://www.cve.org/CVERecord?id=CVE-2012-0029"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2012-0029",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2012-0029"
        }
      ],
      "release_date": "2012-01-23T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2012-02-15T16:01:00+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/kb/docs/DOC-11259",
          "product_ids": [
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.noarch",
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.src",
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-tools-0:6.2-20120209.0.el6_2.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2012:0109"
        }
      ],
      "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-hypervisor6-0:6.2-20120209.0.el6_2.noarch",
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-0:6.2-20120209.0.el6_2.src",
            "6Server-RHEV-Hypervisor:rhev-hypervisor6-tools-0:6.2-20120209.0.el6_2.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "qemu: e1000: process_tx_desc legacy mode packets heap overflow"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.