Vulnerabilities > CVE-2011-1768 - Race Condition vulnerability in Linux Kernel

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN
linux
CWE-362
nessus
NVD
Published: 2012-06-13
Updated: 2023-02-13

Summary

The tunnels implementation in the Linux kernel before 2.6.34, when tunnel functionality is configured as a module, allows remote attackers to cause a denial of service (OOPS) by sending a packet during module loading.

Vulnerable Configurations

Part Description Count
OS
Linux
1191

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Leveraging Race Conditions
    This attack targets a race condition occurring when multiple processes access and manipulate the same resource concurrently and the outcome of the execution depends on the particular order in which the access takes place. The attacker can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance a race condition can occur while accessing a file, the attacker can trick the system by replacing the original file with his version and cause the system to read the malicious file.
  • Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
    This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.

Nessus

  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-1268-1.NASL
    descriptionIt was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password. (CVE-2011-1585) It was discovered that the GRE protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ip_gre module was loading, and crash the system, leading to a denial of service. (CVE-2011-1767) It was discovered that the IP/IP protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ipip module was loading, and crash the system, leading to a denial of service. (CVE-2011-1768) Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly handled unlock requests. A local attacker could exploit this to cause a denial of service. (CVE-2011-2491) Robert Swiecki discovered that mapping extensions were incorrectly handled. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-2496) Ben Pfaff discovered that Classless Queuing Disciplines (qdiscs) were being incorrectly handled. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-2525) Yasuaki Ishimatsu discovered a flaw in the kernel
    last seen2020-06-01
    modified2020-06-02
    plugin id56911
    published2011-11-22
    reporterUbuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/56911
    titleUbuntu 8.04 LTS : linux vulnerabilities (USN-1268-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-1268-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(56911);
  script_version("1.12");
  script_cvs_date("Date: 2019/09/19 12:54:27");

  script_cve_id("CVE-2011-1585", "CVE-2011-1767", "CVE-2011-1768", "CVE-2011-2491", "CVE-2011-2496", "CVE-2011-2525", "CVE-2011-3209");
  script_bugtraq_id(47852, 47853, 48641, 50311);
  script_xref(name:"USN", value:"1268-1");

  script_name(english:"Ubuntu 8.04 LTS : linux vulnerabilities (USN-1268-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"It was discovered that CIFS incorrectly handled authentication. When a
user had a CIFS share mounted that required authentication, a local
user could mount the same share without knowing the correct password.
(CVE-2011-1585)

It was discovered that the GRE protocol incorrectly handled netns
initialization. A remote attacker could send a packet while the ip_gre
module was loading, and crash the system, leading to a denial of
service. (CVE-2011-1767)

It was discovered that the IP/IP protocol incorrectly handled netns
initialization. A remote attacker could send a packet while the ipip
module was loading, and crash the system, leading to a denial of
service. (CVE-2011-1768)

Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly
handled unlock requests. A local attacker could exploit this to cause
a denial of service. (CVE-2011-2491)

Robert Swiecki discovered that mapping extensions were incorrectly
handled. A local attacker could exploit this to crash the system,
leading to a denial of service. (CVE-2011-2496)

Ben Pfaff discovered that Classless Queuing Disciplines (qdiscs) were
being incorrectly handled. A local attacker could exploit this to
crash the system, leading to a denial of service. (CVE-2011-2525)

Yasuaki Ishimatsu discovered a flaw in the kernel's clock
implementation. A local unprivileged attacker could exploit this
causing a denial of service. (CVE-2011-3209).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/1268-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-386");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-lpia");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-lpiacompat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-openvz");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-rt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-virtual");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-xen");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.04:-:lts");

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/02/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/11/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/11/22");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("ksplice.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(8\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 8.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2011-1585", "CVE-2011-1767", "CVE-2011-1768", "CVE-2011-2491", "CVE-2011-2496", "CVE-2011-2525", "CVE-2011-3209");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for USN-1268-1");
  }
  else
  {
    _ubuntu_report = ksplice_reporting_text();
  }
}

flag = 0;

if (ubuntu_check(osver:"8.04", pkgname:"linux-image-2.6.24-30-386", pkgver:"2.6.24-30.96")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"linux-image-2.6.24-30-generic", pkgver:"2.6.24-30.96")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"linux-image-2.6.24-30-lpia", pkgver:"2.6.24-30.96")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"linux-image-2.6.24-30-lpiacompat", pkgver:"2.6.24-30.96")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"linux-image-2.6.24-30-openvz", pkgver:"2.6.24-30.96")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"linux-image-2.6.24-30-rt", pkgver:"2.6.24-30.96")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"linux-image-2.6.24-30-server", pkgver:"2.6.24-30.96")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"linux-image-2.6.24-30-virtual", pkgver:"2.6.24-30.96")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"linux-image-2.6.24-30-xen", pkgver:"2.6.24-30.96")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "linux-image-2.6-386 / linux-image-2.6-generic / etc");
}
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2011-2021.NASL
    descriptionDescription of changes: [2.6.32-100.37.1.el6uek] - [net] gre: fix netns vs proto registration ordering {CVE-2011-1767} - [net] tunnels: fix netns vs proto registration ordering {CVE-2011-1768}
    last seen2020-06-01
    modified2020-06-02
    plugin id68419
    published2013-07-12
    reporterThis script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/68419
    titleOracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2011-2021)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2011-2021.
#

include("compat.inc");

if (description)
{
  script_id(68419);
  script_version("1.11");
  script_cvs_date("Date: 2019/10/25 13:36:09");

  script_cve_id("CVE-2011-1767", "CVE-2011-1768");

  script_name(english:"Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2011-2021)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Description of changes:

[2.6.32-100.37.1.el6uek]
- [net] gre: fix netns vs proto registration ordering {CVE-2011-1767}
- [net] tunnels: fix netns vs proto registration ordering {CVE-2011-1768}"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2011-July/002226.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2011-July/002227.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected unbreakable enterprise kernel packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-100.37.1.el5uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-100.37.1.el5uekdebug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-100.37.1.el6uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-100.37.1.el6uekdebug");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/06/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/07/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/07/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
include("ksplice.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^(5|6)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 5 / 6", "Oracle Linux " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2011-1767", "CVE-2011-1768");  
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for ELSA-2011-2021");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

kernel_major_minor = get_kb_item("Host/uname/major_minor");
if (empty_or_null(kernel_major_minor)) exit(1, "Unable to determine kernel major-minor level.");
expected_kernel_major_minor = "2.6";
if (kernel_major_minor != expected_kernel_major_minor)
  audit(AUDIT_OS_NOT, "running kernel level " + expected_kernel_major_minor + ", it is running kernel level " + kernel_major_minor);

flag = 0;
if (rpm_exists(release:"EL5", rpm:"kernel-uek-2.6.32") && rpm_check(release:"EL5", cpu:"x86_64", reference:"kernel-uek-2.6.32-100.37.1.el5uek")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-uek-debug-2.6.32") && rpm_check(release:"EL5", cpu:"x86_64", reference:"kernel-uek-debug-2.6.32-100.37.1.el5uek")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-uek-debug-devel-2.6.32") && rpm_check(release:"EL5", cpu:"x86_64", reference:"kernel-uek-debug-devel-2.6.32-100.37.1.el5uek")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-uek-devel-2.6.32") && rpm_check(release:"EL5", cpu:"x86_64", reference:"kernel-uek-devel-2.6.32-100.37.1.el5uek")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-uek-doc-2.6.32") && rpm_check(release:"EL5", cpu:"x86_64", reference:"kernel-uek-doc-2.6.32-100.37.1.el5uek")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-uek-firmware-2.6.32") && rpm_check(release:"EL5", cpu:"x86_64", reference:"kernel-uek-firmware-2.6.32-100.37.1.el5uek")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-uek-headers-2.6.32") && rpm_check(release:"EL5", cpu:"x86_64", reference:"kernel-uek-headers-2.6.32-100.37.1.el5uek")) flag++;
if (rpm_check(release:"EL5", cpu:"x86_64", reference:"ofa-2.6.32-100.37.1.el5uek-1.5.1-4.0.28")) flag++;
if (rpm_check(release:"EL5", cpu:"x86_64", reference:"ofa-2.6.32-100.37.1.el5uekdebug-1.5.1-4.0.28")) flag++;

if (rpm_exists(release:"EL6", rpm:"kernel-uek-2.6.32") && rpm_check(release:"EL6", reference:"kernel-uek-2.6.32-100.37.1.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-debug-2.6.32") && rpm_check(release:"EL6", reference:"kernel-uek-debug-2.6.32-100.37.1.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-debug-devel-2.6.32") && rpm_check(release:"EL6", reference:"kernel-uek-debug-devel-2.6.32-100.37.1.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-devel-2.6.32") && rpm_check(release:"EL6", reference:"kernel-uek-devel-2.6.32-100.37.1.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-doc-2.6.32") && rpm_check(release:"EL6", reference:"kernel-uek-doc-2.6.32-100.37.1.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-firmware-2.6.32") && rpm_check(release:"EL6", reference:"kernel-uek-firmware-2.6.32-100.37.1.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-headers-2.6.32") && rpm_check(release:"EL6", reference:"kernel-uek-headers-2.6.32-100.37.1.el6uek")) flag++;
if (rpm_check(release:"EL6", reference:"ofa-2.6.32-100.37.1.el6uek-1.5.1-4.0.47")) flag++;
if (rpm_check(release:"EL6", reference:"ofa-2.6.32-100.37.1.el6uekdebug-1.5.1-4.0.47")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "affected kernel");
}
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2011-0928.NASL
    descriptionFrom Red Hat Security Advisory 2011:0928 : Updated kernel packages that fix multiple security issues and various bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate 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. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : * It was found that the receive hook in the ipip_init() function in the ipip module, and in the ipgre_init() function in the ip_gre module, could be called before network namespaces setup is complete. If packets were received at the time the ipip or ip_gre module was still being loaded into the kernel, it could cause a denial of service. (CVE-2011-1767, CVE-2011-1768, Moderate) * It was found that an mmap() call with the MAP_PRIVATE flag on
    last seen2020-06-01
    modified2020-06-02
    plugin id68305
    published2013-07-12
    reporterThis script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/68305
    titleOracle Linux 6 : kernel (ELSA-2011-0928)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2011:0928 and 
# Oracle Linux Security Advisory ELSA-2011-0928 respectively.
#

include("compat.inc");

if (description)
{
  script_id(68305);
  script_version("1.9");
  script_cvs_date("Date: 2019/10/25 13:36:09");

  script_cve_id("CVE-2011-1767", "CVE-2011-1768", "CVE-2011-2479");
  script_bugtraq_id(47852, 47853, 48347);
  script_xref(name:"RHSA", value:"2011:0928");

  script_name(english:"Oracle Linux 6 : kernel (ELSA-2011-0928)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"From Red Hat Security Advisory 2011:0928 :

Updated kernel packages that fix multiple security issues and various
bugs are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having
moderate 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.

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

This update fixes the following security issues :

* It was found that the receive hook in the ipip_init() function in
the ipip module, and in the ipgre_init() function in the ip_gre
module, could be called before network namespaces setup is complete.
If packets were received at the time the ipip or ip_gre module was
still being loaded into the kernel, it could cause a denial of
service. (CVE-2011-1767, CVE-2011-1768, Moderate)

* It was found that an mmap() call with the MAP_PRIVATE flag on
'/dev/zero' would create transparent hugepages and trigger a certain
robustness check. A local, unprivileged user could use this flaw to
cause a denial of service. (CVE-2011-2479, Moderate)

This update also fixes various bugs. Documentation for these bug fixes
will be available shortly from the Technical Notes document linked to
in the References section.

Users should upgrade to these updated packages, which contain
backported patches to resolve these issues, and fix the bugs noted in
the Technical Notes. The system must be rebooted for this update to
take effect."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2011-July/002228.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected kernel packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-firmware");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/06/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/07/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/07/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
include("ksplice.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 6", "Oracle Linux " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2011-1767", "CVE-2011-1768", "CVE-2011-2479");  
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for ELSA-2011-0928");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

kernel_major_minor = get_kb_item("Host/uname/major_minor");
if (empty_or_null(kernel_major_minor)) exit(1, "Unable to determine kernel major-minor level.");
expected_kernel_major_minor = "2.6";
if (kernel_major_minor != expected_kernel_major_minor)
  audit(AUDIT_OS_NOT, "running kernel level " + expected_kernel_major_minor + ", it is running kernel level " + kernel_major_minor);

flag = 0;
if (rpm_exists(release:"EL6", rpm:"kernel-2.6.32") && rpm_check(release:"EL6", reference:"kernel-2.6.32-131.6.1.el6")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-debug-2.6.32") && rpm_check(release:"EL6", reference:"kernel-debug-2.6.32-131.6.1.el6")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-debug-devel-2.6.32") && rpm_check(release:"EL6", reference:"kernel-debug-devel-2.6.32-131.6.1.el6")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-devel-2.6.32") && rpm_check(release:"EL6", reference:"kernel-devel-2.6.32-131.6.1.el6")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-doc-2.6.32") && rpm_check(release:"EL6", reference:"kernel-doc-2.6.32-131.6.1.el6")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-firmware-2.6.32") && rpm_check(release:"EL6", reference:"kernel-firmware-2.6.32-131.6.1.el6")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-headers-2.6.32") && rpm_check(release:"EL6", reference:"kernel-headers-2.6.32-131.6.1.el6")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "affected kernel");
}
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-1203-1.NASL
    descriptionDan Rosenberg discovered that multiple terminal ioctls did not correctly initialize structure memory. A local attacker could exploit this to read portions of kernel stack memory, leading to a loss of privacy. (CVE-2010-4076, CVE-2010-4077) Alex Shi and Eric Dumazet discovered that the network stack did not correctly handle packet backlogs. A remote attacker could exploit this by sending a large amount of network traffic to cause the system to run out of memory, leading to a denial of service. (CVE-2010-4251, CVE-2010-4805) It was discovered that the /proc filesystem did not correctly handle permission changes when programs executed. A local attacker could hold open files to examine details about programs running with higher privileges, potentially increasing the chances of exploiting additional vulnerabilities. (CVE-2011-1020) Dan Rosenberg discovered that the X.25 Rose network stack did not correctly handle certain fields. If a system was running with Rose enabled, a remote attacker could send specially crafted traffic to gain root privileges. (CVE-2011-1493) Timo Warns discovered that the GUID partition parsing routines did not correctly validate certain structures. A local attacker with physical access could plug in a specially crafted block device to crash the system, leading to a denial of service. (CVE-2011-1577) It was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password. (CVE-2011-1585) It was discovered that the GRE protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ip_gre module was loading, and crash the system, leading to a denial of service. (CVE-2011-1767) It was discovered that the IP/IP protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ipip module was loading, and crash the system, leading to a denial of service. (CVE-2011-1768) Ben Hutchings reported a flaw in the kernel
    last seen2020-06-01
    modified2020-06-02
    plugin id56191
    published2011-09-14
    reporterUbuntu Security Notice (C) 2011-2013 Canonical, Inc. / NASL script (C) 2011-2016 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/56191
    titleUbuntu 10.04 LTS : linux-mvl-dove vulnerabilities (USN-1203-1)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20110712_KERNEL_ON_SL6_X.NASL
    descriptionThe kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : - It was found that the receive hook in the ipip_init() function in the ipip module, and in the ipgre_init() function in the ip_gre module, could be called before network namespaces setup is complete. If packets were received at the time the ipip or ip_gre module was still being loaded into the kernel, it could cause a denial of service. (CVE-2011-1767, CVE-2011-1768, Moderate) - It was found that an mmap() call with the MAP_PRIVATE flag on
    last seen2020-06-01
    modified2020-06-02
    plugin id61082
    published2012-08-01
    reporterThis script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/61082
    titleScientific Linux Security Update : kernel on SL6.x i386/x86_64
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2011-2024.NASL
    descriptionDescription of changes: [2.6.32-200.16.1.el6uek] - Revert change to restore DEFAULTKERNEL [2.6.32-200.15.1.el6uek] - Add -u parameter to kernel_variant_post to make it work properly for uek [orabug 12819958] [2.6.32-200.14.1.el6uek] - Restore DEFAULTKERNEL value to
    last seen2020-06-01
    modified2020-06-02
    plugin id68420
    published2013-07-12
    reporterThis script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/68420
    titleOracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2011-2024)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-2310.NASL
    descriptionSeveral vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leak. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2009-4067 Rafael Dominguez Vega of MWR InfoSecurity reported an issue in the auerswald module, a driver for Auerswald PBX/System Telephone USB devices. Attackers with physical access to a system
    last seen2020-03-17
    modified2011-09-26
    plugin id56285
    published2011-09-26
    reporterThis script is Copyright (C) 2011-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/56285
    titleDebian DSA-2310-1 : linux-2.6 - privilege escalation/denial of service/information leak
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-1208-1.NASL
    descriptionDan Rosenberg discovered that multiple terminal ioctls did not correctly initialize structure memory. A local attacker could exploit this to read portions of kernel stack memory, leading to a loss of privacy. (CVE-2010-4076, CVE-2010-4077) Alex Shi and Eric Dumazet discovered that the network stack did not correctly handle packet backlogs. A remote attacker could exploit this by sending a large amount of network traffic to cause the system to run out of memory, leading to a denial of service. (CVE-2010-4251, CVE-2010-4805) It was discovered that the /proc filesystem did not correctly handle permission changes when programs executed. A local attacker could hold open files to examine details about programs running with higher privileges, potentially increasing the chances of exploiting additional vulnerabilities. (CVE-2011-1020) Dan Rosenberg discovered that the X.25 Rose network stack did not correctly handle certain fields. If a system was running with Rose enabled, a remote attacker could send specially crafted traffic to gain root privileges. (CVE-2011-1493) Timo Warns discovered that the GUID partition parsing routines did not correctly validate certain structures. A local attacker with physical access could plug in a specially crafted block device to crash the system, leading to a denial of service. (CVE-2011-1577) It was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password. (CVE-2011-1585) It was discovered that the GRE protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ip_gre module was loading, and crash the system, leading to a denial of service. (CVE-2011-1767) It was discovered that the IP/IP protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ipip module was loading, and crash the system, leading to a denial of service. (CVE-2011-1768) Ben Hutchings reported a flaw in the kernel
    last seen2020-06-01
    modified2020-06-02
    plugin id56207
    published2011-09-15
    reporterUbuntu Security Notice (C) 2011-2013 Canonical, Inc. / NASL script (C) 2011-2016 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/56207
    titleUbuntu 10.10 : linux-mvl-dove vulnerabilities (USN-1208-1)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-2303.NASL
    descriptionSeveral vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2011-1020 Kees Cook discovered an issue in the /proc filesystem that allows local users to gain access to sensitive process information after execution of a setuid binary. - CVE-2011-1576 Ryan Sweat discovered an issue in the VLAN implementation. Local users may be able to cause a kernel memory leak, resulting in a denial of service. - CVE-2011-2484 Vasiliy Kulikov of Openwall discovered that the number of exit handlers that a process can register is not capped, resulting in local denial of service through resource exhaustion (CPU time and memory). - CVE-2011-2491 Vasily Averin discovered an issue with the NFS locking implementation. A malicious NFS server can cause a client to hang indefinitely in an unlock call. - CVE-2011-2492 Marek Kroemeke and Filip Palian discovered that uninitialized struct elements in the Bluetooth subsystem could lead to a leak of sensitive kernel memory through leaked stack memory. - CVE-2011-2495 Vasiliy Kulikov of Openwall discovered that the io file of a process
    last seen2020-03-17
    modified2011-09-09
    plugin id56130
    published2011-09-09
    reporterThis script is Copyright (C) 2011-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/56130
    titleDebian DSA-2303-2 : linux-2.6 - privilege escalation/denial of service/information leak
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-1218-1.NASL
    descriptionDan Rosenberg discovered that multiple terminal ioctls did not correctly initialize structure memory. A local attacker could exploit this to read portions of kernel stack memory, leading to a loss of privacy. (CVE-2010-4076, CVE-2010-4077) Alex Shi and Eric Dumazet discovered that the network stack did not correctly handle packet backlogs. A remote attacker could exploit this by sending a large amount of network traffic to cause the system to run out of memory, leading to a denial of service. (CVE-2010-4251, CVE-2010-4805) It was discovered that the /proc filesystem did not correctly handle permission changes when programs executed. A local attacker could hold open files to examine details about programs running with higher privileges, potentially increasing the chances of exploiting additional vulnerabilities. (CVE-2011-1020) Dan Rosenberg discovered that the X.25 Rose network stack did not correctly handle certain fields. If a system was running with Rose enabled, a remote attacker could send specially crafted traffic to gain root privileges. (CVE-2011-1493) Timo Warns discovered that the GUID partition parsing routines did not correctly validate certain structures. A local attacker with physical access could plug in a specially crafted block device to crash the system, leading to a denial of service. (CVE-2011-1577) It was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password. (CVE-2011-1585) It was discovered that the GRE protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ip_gre module was loading, and crash the system, leading to a denial of service. (CVE-2011-1767) It was discovered that the IP/IP protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ipip module was loading, and crash the system, leading to a denial of service. (CVE-2011-1768) Ben Hutchings reported a flaw in the kernel
    last seen2020-06-01
    modified2020-06-02
    plugin id56343
    published2011-09-30
    reporterUbuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/56343
    titleUbuntu 10.04 LTS : linux vulnerabilities (USN-1218-1)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-1256-1.NASL
    descriptionIt was discovered that the /proc filesystem did not correctly handle permission changes when programs executed. A local attacker could hold open files to examine details about programs running with higher privileges, potentially increasing the chances of exploiting additional vulnerabilities. (CVE-2011-1020) Vasiliy Kulikov discovered that the Bluetooth stack did not correctly clear memory. A local attacker could exploit this to read kernel stack memory, leading to a loss of privacy. (CVE-2011-1078) Vasiliy Kulikov discovered that the Bluetooth stack did not correctly check that device name strings were NULL terminated. A local attacker could exploit this to crash the system, leading to a denial of service, or leak contents of kernel stack memory, leading to a loss of privacy. (CVE-2011-1079) Vasiliy Kulikov discovered that bridge network filtering did not check that name fields were NULL terminated. A local attacker could exploit this to leak contents of kernel stack memory, leading to a loss of privacy. (CVE-2011-1080) Johan Hovold discovered that the DCCP network stack did not correctly handle certain packet combinations. A remote attacker could send specially crafted network traffic that would crash the system, leading to a denial of service. (CVE-2011-1093) Peter Huewe discovered that the TPM device did not correctly initialize memory. A local attacker could exploit this to read kernel heap memory contents, leading to a loss of privacy. (CVE-2011-1160) Dan Rosenberg discovered that the IRDA subsystem did not correctly check certain field sizes. If a system was using IRDA, a remote attacker could send specially crafted traffic to crash the system or gain root privileges. (CVE-2011-1180) Ryan Sweat discovered that the GRO code did not correctly validate memory. In some configurations on systems using VLANs, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. (CVE-2011-1478) It was discovered that the security fix for CVE-2010-4250 introduced a regression. A remote attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-1479) Dan Rosenberg discovered that the X.25 Rose network stack did not correctly handle certain fields. If a system was running with Rose enabled, a remote attacker could send specially crafted traffic to gain root privileges. (CVE-2011-1493) It was discovered that the Stream Control Transmission Protocol (SCTP) implementation incorrectly calculated lengths. If the net.sctp.addip_enable variable was turned on, a remote attacker could send specially crafted traffic to crash the system. (CVE-2011-1573) Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. (CVE-2011-1576) Timo Warns discovered that the GUID partition parsing routines did not correctly validate certain structures. A local attacker with physical access could plug in a specially crafted block device to crash the system, leading to a denial of service. (CVE-2011-1577) Phil Oester discovered that the network bonding system did not correctly handle large queues. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. (CVE-2011-1581) It was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password. (CVE-2011-1585) It was discovered that the GRE protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ip_gre module was loading, and crash the system, leading to a denial of service. (CVE-2011-1767) It was discovered that the IP/IP protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ipip module was loading, and crash the system, leading to a denial of service. (CVE-2011-1768) Ben Greear discovered that CIFS did not correctly handle direct I/O. A local attacker with access to a CIFS partition could exploit this to crash the system, leading to a denial of service. (CVE-2011-1771) Timo Warns discovered that the EFI GUID partition table was not correctly parsed. A physically local attacker that could insert mountable devices could exploit this to crash the system or possibly gain root privileges. (CVE-2011-1776) Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service. (CVE-2011-1833) Ben Hutchings reported a flaw in the kernel
    last seen2020-06-01
    modified2020-06-02
    plugin id56768
    published2011-11-10
    reporterUbuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/56768
    titleUbuntu 10.04 LTS : linux-lts-backport-natty vulnerabilities (USN-1256-1)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-1271-1.NASL
    descriptionIt was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password. (CVE-2011-1585) It was discovered that the GRE protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ip_gre module was loading, and crash the system, leading to a denial of service. (CVE-2011-1767) It was discovered that the IP/IP protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ipip module was loading, and crash the system, leading to a denial of service. (CVE-2011-1768) Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly handled unlock requests. A local attacker could exploit this to cause a denial of service. (CVE-2011-2491)
    last seen2020-06-01
    modified2020-06-02
    plugin id56913
    published2011-11-22
    reporterUbuntu Security Notice (C) 2011-2012 Canonical, Inc. / NASL script (C) 2011-2016 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/56913
    titleUSN-1271-1 : linux-fsl-imx51 vulnerabilities
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2011-1253.NASL
    descriptionUpdated kernel-rt packages that fix multiple security issues and various bugs are now available for Red Hat Enterprise MRG 2.0. 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. Security fixes : * A flaw in the SCTP and DCCP implementations could allow a remote attacker to cause a denial of service. (CVE-2010-4526, CVE-2011-1770, Important) * Flaws in the Management Module Support for Message Passing Technology (MPT) based controllers could allow a local, unprivileged user to cause a denial of service, an information leak, or escalate their privileges. (CVE-2011-1494, CVE-2011-1495, Important) * Flaws in the AGPGART driver, and a flaw in agp_allocate_memory(), could allow a local user to cause a denial of service or escalate their privileges. (CVE-2011-1745, CVE-2011-2022, CVE-2011-1746, Important) * A flaw in the client-side NLM implementation could allow a local, unprivileged user to cause a denial of service. (CVE-2011-2491, Important) * A flaw in the Bluetooth implementation could allow a remote attacker to cause a denial of service or escalate their privileges. (CVE-2011-2497, Important) * Flaws in the netlink-based wireless configuration interface could allow a local user, who has the CAP_NET_ADMIN capability, to cause a denial of service or escalate their privileges on systems that have an active wireless interface. (CVE-2011-2517, Important) * The maximum file offset handling for ext4 file systems could allow a local, unprivileged user to cause a denial of service. (CVE-2011-2695, Important) * A local, unprivileged user could allocate large amounts of memory not visible to the OOM killer, causing a denial of service. (CVE-2010-4243, Moderate) * The proc file system could allow a local, unprivileged user to obtain sensitive information or possibly cause integrity issues. (CVE-2011-1020, Moderate) * A local, privileged user could possibly write arbitrary kernel memory via /sys/kernel/debug/acpi/custom_method. (CVE-2011-1021, Moderate) * Inconsistency in the methods for allocating and freeing NFSv4 ACL data; CVE-2010-4250 fix caused a regression; a flaw in next_pidmap() and inet_diag_bc_audit(); flaws in the CAN implementation; a race condition in the memory merging support; a flaw in the taskstats subsystem; and the way mapping expansions were handled could allow a local, unprivileged user to cause a denial of service. (CVE-2011-1090, CVE-2011-1479, CVE-2011-1593, CVE-2011-2213, CVE-2011-1598, CVE-2011-1748, CVE-2011-2183, CVE-2011-2484, CVE-2011-2496, Moderate) * A flaw in GRO could result in a denial of service when a malformed VLAN frame is received. (CVE-2011-1478, Moderate) * napi_reuse_skb() could be called on VLAN packets allowing an attacker on the local network to possibly trigger a denial of service. (CVE-2011-1576, Moderate) * A denial of service could occur if packets were received while the ipip or ip_gre module was being loaded. (CVE-2011-1767, CVE-2011-1768, Moderate) * Information leaks. (CVE-2011-1160, CVE-2011-2492, CVE-2011-2495, Low) * Flaws in the EFI GUID Partition Table implementation could allow a local attacker to cause a denial of service. (CVE-2011-1577, CVE-2011-1776, Low) * While a user has a CIFS share mounted that required successful authentication, a local, unprivileged user could mount that share without knowing the correct password if mount.cifs was setuid root. (CVE-2011-1585, Low) Red Hat would like to thank Dan Rosenberg for reporting CVE-2011-1770, CVE-2011-1494, CVE-2011-1495, CVE-2011-2497, and CVE-2011-2213; Vasiliy Kulikov of Openwall for reporting CVE-2011-1745, CVE-2011-2022, CVE-2011-1746, CVE-2011-2484, and CVE-2011-2495; Vasily Averin for reporting CVE-2011-2491; Brad Spengler for reporting CVE-2010-4243; Kees Cook for reporting CVE-2011-1020; Robert Swiecki for reporting CVE-2011-1593 and CVE-2011-2496; Oliver Hartkopp for reporting CVE-2011-1748; Andrea Righi for reporting CVE-2011-2183; Ryan Sweat for reporting CVE-2011-1478 and CVE-2011-1576; Peter Huewe for reporting CVE-2011-1160; Marek Kroemeke and Filip Palian for reporting CVE-2011-2492; and Timo Warns for reporting CVE-2011-1577 and CVE-2011-1776.
    last seen2020-06-01
    modified2020-06-02
    plugin id76634
    published2014-07-22
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/76634
    titleRHEL 6 : MRG (RHSA-2011:1253)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2011-0928.NASL
    descriptionUpdated kernel packages that fix multiple security issues and various bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate 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. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : * It was found that the receive hook in the ipip_init() function in the ipip module, and in the ipgre_init() function in the ip_gre module, could be called before network namespaces setup is complete. If packets were received at the time the ipip or ip_gre module was still being loaded into the kernel, it could cause a denial of service. (CVE-2011-1767, CVE-2011-1768, Moderate) * It was found that an mmap() call with the MAP_PRIVATE flag on
    last seen2020-06-01
    modified2020-06-02
    plugin id55584
    published2011-07-13
    reporterThis script is Copyright (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/55584
    titleRHEL 6 : kernel (RHSA-2011:0928)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-2264.NASL
    descriptionSeveral vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leak. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2010-2524 David Howells reported an issue in the Common Internet File System (CIFS). Local users could cause arbitrary CIFS shares to be mounted by introducing malicious redirects. - CVE-2010-3875 Vasiliy Kulikov discovered an issue in the Linux implementation of the Amateur Radio AX.25 Level 2 protocol. Local users may obtain access to sensitive kernel memory. - CVE-2010-4075 Dan Rosenberg reported an issue in the tty layer that may allow local users to obtain access to sensitive kernel memory. - CVE-2010-4655 Kees Cook discovered several issues in the ethtool interface which may allow local users with the CAP_NET_ADMIN capability to obtain access to sensitive kernel memory. - CVE-2011-0695 Jens Kuehnel reported an issue in the InfiniBand stack. Remote attackers can exploit a race condition to cause a denial of service (kernel panic). - CVE-2011-0710 Al Viro reported an issue in the /proc/<pid>/status interface on the s390 architecture. Local users could gain access to sensitive memory in processes they do not own via the task_show_regs entry. - CVE-2011-0711 Dan Rosenberg reported an issue in the XFS filesystem. Local users may obtain access to sensitive kernel memory. - CVE-2011-0726 Kees Cook reported an issue in the /proc/<pid>/stat implementation. Local users could learn the text location of a process, defeating protections provided by address space layout randomization (ASLR). - CVE-2011-1010 Timo Warns reported an issue in the Linux support for Mac partition tables. Local users with physical access could cause a denial of service (panic) by adding a storage device with a malicious map_count value. - CVE-2011-1012 Timo Warns reported an issue in the Linux support for LDM partition tables. Local users with physical access could cause a denial of service (Oops) by adding a storage device with an invalid VBLK value in the VMDB structure. - CVE-2011-1017 Timo Warns reported an issue in the Linux support for LDM partition tables. Users with physical access can gain access to sensitive kernel memory or gain elevated privileges by adding a storage device with a specially crafted LDM partition. - CVE-2011-1078 Vasiliy Kulikov discovered an issue in the Bluetooth subsystem. Local users can obtain access to sensitive kernel memory. - CVE-2011-1079 Vasiliy Kulikov discovered an issue in the Bluetooth subsystem. Local users with the CAP_NET_ADMIN capability can cause a denial of service (kernel Oops). - CVE-2011-1080 Vasiliy Kulikov discovered an issue in the Netfilter subsystem. Local users can obtain access to sensitive kernel memory. - CVE-2011-1090 Neil Horman discovered a memory leak in the setacl() call on NFSv4 filesystems. Local users can exploit this to cause a denial of service (Oops). - CVE-2011-1093 Johan Hovold reported an issue in the Datagram Congestion Control Protocol (DCCP) implementation. Remote users could cause a denial of service by sending data after closing a socket. - CVE-2011-1160 Peter Huewe reported an issue in the Linux kernel
    last seen2020-03-17
    modified2011-06-20
    plugin id55170
    published2011-06-20
    reporterThis script is Copyright (C) 2011-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/55170
    titleDebian DSA-2264-1 : linux-2.6 - privilege escalation/denial of service/information leak
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-1216-1.NASL
    descriptionDan Rosenberg discovered that multiple terminal ioctls did not correctly initialize structure memory. A local attacker could exploit this to read portions of kernel stack memory, leading to a loss of privacy. (CVE-2010-4076, CVE-2010-4077) Alex Shi and Eric Dumazet discovered that the network stack did not correctly handle packet backlogs. A remote attacker could exploit this by sending a large amount of network traffic to cause the system to run out of memory, leading to a denial of service. (CVE-2010-4251, CVE-2010-4805) It was discovered that the /proc filesystem did not correctly handle permission changes when programs executed. A local attacker could hold open files to examine details about programs running with higher privileges, potentially increasing the chances of exploiting additional vulnerabilities. (CVE-2011-1020) Dan Rosenberg discovered that the X.25 Rose network stack did not correctly handle certain fields. If a system was running with Rose enabled, a remote attacker could send specially crafted traffic to gain root privileges. (CVE-2011-1493) Timo Warns discovered that the GUID partition parsing routines did not correctly validate certain structures. A local attacker with physical access could plug in a specially crafted block device to crash the system, leading to a denial of service. (CVE-2011-1577) It was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password. (CVE-2011-1585) It was discovered that the GRE protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ip_gre module was loading, and crash the system, leading to a denial of service. (CVE-2011-1767) It was discovered that the IP/IP protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ipip module was loading, and crash the system, leading to a denial of service. (CVE-2011-1768) Ben Hutchings reported a flaw in the kernel
    last seen2020-06-01
    modified2020-06-02
    plugin id56305
    published2011-09-27
    reporterUbuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/56305
    titleUbuntu 10.04 LTS : linux-ec2 vulnerabilities (USN-1216-1)

Redhat

rpms
  • kernel-0:2.6.32-131.6.1.el6
  • kernel-bootwrapper-0:2.6.32-131.6.1.el6
  • kernel-debug-0:2.6.32-131.6.1.el6
  • kernel-debug-debuginfo-0:2.6.32-131.6.1.el6
  • kernel-debug-devel-0:2.6.32-131.6.1.el6
  • kernel-debuginfo-0:2.6.32-131.6.1.el6
  • kernel-debuginfo-common-i686-0:2.6.32-131.6.1.el6
  • kernel-debuginfo-common-ppc64-0:2.6.32-131.6.1.el6
  • kernel-debuginfo-common-s390x-0:2.6.32-131.6.1.el6
  • kernel-debuginfo-common-x86_64-0:2.6.32-131.6.1.el6
  • kernel-devel-0:2.6.32-131.6.1.el6
  • kernel-doc-0:2.6.32-131.6.1.el6
  • kernel-firmware-0:2.6.32-131.6.1.el6
  • kernel-headers-0:2.6.32-131.6.1.el6
  • kernel-kdump-0:2.6.32-131.6.1.el6
  • kernel-kdump-debuginfo-0:2.6.32-131.6.1.el6
  • kernel-kdump-devel-0:2.6.32-131.6.1.el6
  • perf-0:2.6.32-131.6.1.el6
  • perf-debuginfo-0:2.6.32-131.6.1.el6
  • kernel-rt-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-debug-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-debug-debuginfo-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-debug-devel-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-debuginfo-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-debuginfo-common-x86_64-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-devel-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-doc-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-firmware-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-trace-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-trace-debuginfo-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-trace-devel-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-vanilla-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-vanilla-debuginfo-0:2.6.33.9-rt31.75.el6rt
  • kernel-rt-vanilla-devel-0:2.6.33.9-rt31.75.el6rt

Seebug

bulletinFamilyexploit
descriptionBugtraq ID: 47853 CVE ID：CVE-2011-1768 Linux是一款开放源代码的操作系统。 net/ipv6/ip6_tunnel.c文件中IPv6隧道初始化函数包含如下代码： /** 02 * ip6_tunnel_init - register protocol and reserve needed resources 03 * 04 * Return: 0 on success 05 **/ 06 07 static int __init ip6_tunnel_init(void) 08 { 09 int err; 10 11 if (xfrm6_tunnel_register(&amp;ip4ip6_handler, AF_INET)) { 12 printk(KERN_ERR &quot;ip6_tunnel init: can't register ip4ip6\n&quot;); 13 err = -EAGAIN; 14 goto out; 15 } 16 17 if (xfrm6_tunnel_register(&amp;ip6ip6_handler, AF_INET6)) { 18 printk(KERN_ERR &quot;ip6_tunnel init: can't register ip6ip6\n&quot;); 19 err = -EAGAIN; 20 goto unreg_ip4ip6; 21 } 22 23 err = register_pernet_gen_device(&amp;ip6_tnl_net_id, &amp;ip6_tnl_net_ops); 24 if (err &lt; 0) 25 goto err_pernet; 26 return 0; 27 err_pernet: 28 xfrm6_tunnel_deregister(&amp;ip6ip6_handler, AF_INET6); 29 unreg_ip4ip6: 30 xfrm6_tunnel_deregister(&amp;ip4ip6_handler, AF_INET); 31 out: 32 return err; 33 } 可以看到，函数会首先注册‘ip4ip6_handler’协议处理器函数，然后处理注册‘ip6_tnl_net_ops’回调函数，如果用户调用位于上述结构中的某个函数指针，会由于未初始化指针尝试访问非法内存而触发访问冲突。 Linux kernel 2.6.x 厂商解决方案 用户可参考如下供应商提供的安全补丁： http://xorl.wordpress.com/2011/05/14/cve-2011-1768-linux-kernel-tunnels-remote-race-condition/
idSSV:20560
last seen2017-11-19
modified2011-05-18
published2011-05-18
reporterRoot
titleLinux内核隧道初始化远程拒绝服务漏洞

References