Vulnerabilities > CVE-2011-2183 - Race Condition vulnerability in Linux Kernel

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-2389. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(57583);
  script_version("1.13");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2011-2183", "CVE-2011-2213", "CVE-2011-2898", "CVE-2011-3353", "CVE-2011-4077", "CVE-2011-4110", "CVE-2011-4127", "CVE-2011-4611", "CVE-2011-4622", "CVE-2011-4914");
  script_bugtraq_id(46935, 48101, 48333, 48986, 49527, 50370, 50755, 51081, 51172, 51176);
  script_xref(name:"DSA", value:"2389");

  script_name(english:"Debian DSA-2389-1 : linux-2.6 - privilege escalation/denial of service/information leak");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several 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-2011-2183
    Andrea Righi reported an issue in KSM, a memory-saving
    de-duplication feature. By exploiting a race with
    exiting tasks, local users can cause a kernel oops,
    resulting in a denial of service.

  - CVE-2011-2213
    Dan Rosenberg discovered an issue in the INET socket
    monitoring interface. Local users could cause a denial
    of service by injecting code and causing the kernel to
    execute an infinite loop.

  - CVE-2011-2898
    Eric Dumazet reported an information leak in the raw
    packet socket implementation.

  - CVE-2011-3353
    Han-Wen Nienhuys reported a local denial of service
    issue in the FUSE (Filesystem in Userspace) support in
    the Linux kernel. Local users could cause a buffer
    overflow, leading to a kernel oops and resulting in a
    denial of service.

  - CVE-2011-4077
    Carlos Maiolino reported an issue in the XFS filesystem.
    A local user with the ability to mount a filesystem
    could corrupt memory resulting in a denial of service or
    possibly gain elevated privileges.

  - CVE-2011-4110
    David Howells reported an issue in the kernel's access
    key retention system which allow local users to cause a
    kernel oops leading to a denial of service.

  - CVE-2011-4127
    Paolo Bonzini of Red Hat reported an issue in the ioctl
    passthrough support for SCSI devices. Users with
    permission to access restricted portions of a device
    (e.g. a partition or a logical volume) can obtain access
    to the entire device by way of the SG_IO ioctl. This
    could be exploited by a local user or privileged VM
    guest to achieve a privilege escalation.

  - CVE-2011-4611
    Maynard Johnson reported an issue with the perf support
    on POWER7 systems that allows local users to cause a
    denial of service.

  - CVE-2011-4622
    Jan Kiszka reported an issue in the KVM PIT timer
    support. Local users with the permission to use KVM can
    cause a denial of service by starting a PIT timer
    without first setting up the irqchip.

  - CVE-2011-4914
    Ben Hutchings reported various bounds checking issues
    within the ROSE protocol support in the kernel. Remote
    users could possibly use this to gain access to
    sensitive memory or cause a denial of service."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-2183"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-2213"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-2898"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-3353"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-4077"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-4110"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-4127"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-4611"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-4622"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2011-4914"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze/linux-2.6"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2012/dsa-2389"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the linux-2.6 and user-mode-linux packages.

For the stable distribution (squeeze), this problem has been fixed in
version 2.6.32-39squeeze1. Updates for issues impacting the oldstable
distribution (lenny) will be available soon.

The following matrix lists additional source packages that were
rebuilt for compatibility with or to take advantage of this update :

                          Debian 6.0 (squeeze)     
  user-mode-linux          2.6.32-1um-4+39squeeze1"
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:linux-2.6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2011/08/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/01/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/01/18");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"6.0", prefix:"firmware-linux-free", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-base", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-doc-2.6.32", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-486", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-4kc-malta", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-5kc-malta", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-686", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-686-bigmem", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-all", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-all-amd64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-all-armel", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-all-i386", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-all-ia64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-all-mips", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-all-mipsel", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-all-powerpc", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-all-s390", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-all-sparc", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-amd64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-common", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-common-openvz", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-common-vserver", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-common-xen", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-iop32x", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-itanium", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-ixp4xx", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-kirkwood", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-mckinley", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-openvz-686", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-openvz-amd64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-orion5x", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-powerpc", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-powerpc-smp", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-powerpc64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-r4k-ip22", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-r5k-cobalt", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-r5k-ip32", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-s390x", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-sb1-bcm91250a", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-sb1a-bcm91480b", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-sparc64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-sparc64-smp", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-versatile", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-vserver-686", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-vserver-686-bigmem", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-vserver-amd64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-vserver-itanium", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-vserver-mckinley", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-vserver-powerpc", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-vserver-powerpc64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-vserver-s390x", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-vserver-sparc64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-xen-686", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-headers-2.6.32-5-xen-amd64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-486", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-4kc-malta", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-5kc-malta", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-686", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-686-bigmem", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-686-bigmem-dbg", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-amd64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-amd64-dbg", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-iop32x", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-itanium", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-ixp4xx", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-kirkwood", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-mckinley", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-openvz-686", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-openvz-686-dbg", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-openvz-amd64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-openvz-amd64-dbg", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-orion5x", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-powerpc", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-powerpc-smp", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-powerpc64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-r4k-ip22", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-r5k-cobalt", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-r5k-ip32", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-s390x", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-s390x-tape", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-sb1-bcm91250a", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-sb1a-bcm91480b", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-sparc64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-sparc64-smp", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-versatile", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-vserver-686", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-vserver-686-bigmem", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-vserver-686-bigmem-dbg", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-vserver-amd64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-vserver-amd64-dbg", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-vserver-itanium", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-vserver-mckinley", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-vserver-powerpc", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-vserver-powerpc64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-vserver-s390x", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-vserver-sparc64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-xen-686", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-xen-686-dbg", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-xen-amd64", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-image-2.6.32-5-xen-amd64-dbg", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-libc-dev", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-manual-2.6.32", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-patch-debian-2.6.32", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-source-2.6.32", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-support-2.6.32-5", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"linux-tools-2.6.32", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"xen-linux-system-2.6.32-5-xen-686", reference:"2.6.32-39squeeze1")) flag++;
if (deb_check(release:"6.0", prefix:"xen-linux-system-2.6.32-5-xen-amd64", reference:"2.6.32-39squeeze1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

# This script was automatically generated from Ubuntu Security
# Notice USN-1244-1.  It is released under the Nessus Script 
# Licence.
#
# Ubuntu Security Notices are (C) Canonical, Inc.
# See http://www.ubuntu.com/usn/
# Ubuntu(R) is a registered trademark of Canonical, Inc.

if (!defined_func("bn_random")) exit(0);

include("compat.inc");

if (description)
{
  script_id(56643);
  script_version("$Revision: 1.2 $");
  script_cvs_date("$Date: 2016/12/01 20:56:51 $");

  script_cve_id("CVE-2010-3873", "CVE-2011-2183", "CVE-2011-2491", "CVE-2011-2494", "CVE-2011-2495", "CVE-2011-2517", "CVE-2011-2695", "CVE-2011-2905", "CVE-2011-2909", "CVE-2011-3363");
  script_xref(name:"USN", value:"1244-1");

  script_name(english:"USN-1244-1 : linux-ti-omap4 vulnerabilities");
  script_summary(english:"Checks dpkg output for updated package(s)");

  script_set_attribute(attribute:"synopsis", value: 
"The remote Ubuntu host is missing one or more security-related
patches.");
  script_set_attribute(attribute:"description", value:
"Dan Rosenberg discovered that the Linux kernel X.25 implementation
incorrectly parsed facilities. A remote attacker could exploit this
to crash the kernel, leading to a denial of service. (CVE-2010-3873)

Andrea Righi discovered a race condition in the KSM memory merging
support. If KSM was being used, a local attacker could exploit this
to crash the system, leading to a denial of service. (CVE-2011-2183)

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)

Vasiliy Kulikov discovered that taskstats did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy. (CVE-2011-2494)

Vasiliy Kulikov discovered that /proc/PID/io did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy. (CVE-2011-2495)

It was discovered that the wireless stack incorrectly verified SSID
lengths. A local attacker could exploit this to cause a denial of
service or gain root privileges. (CVE-2011-2517)

It was discovered that the EXT4 filesystem contained multiple
off-by-one flaws. A local attacker could exploit this to crash the
system, leading to a denial of service. (CVE-2011-2695)

Christian Ohm discovered that the perf command looks for
configuration files in the current directory. If a privileged user
were tricked into running perf in a directory containing a malicious
configuration file, an attacker could run arbitrary commands and
possibly gain privileges. (CVE-2011-2905)

Vasiliy Kulikov discovered that the Comedi driver did not correctly
clear memory. A local attacker could exploit this to read kernel
stack memory, leading to a loss of privacy. (CVE-2011-2909)

Yogesh Sharma discovered that CIFS did not correctly handle UNCs that
had no prefixpaths. A local attacker with access to a CIFS partition
could exploit this to crash the system, leading to a denial of
service. (CVE-2011-3363)");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/usn-1244-1/");
  script_set_attribute(attribute:"solution", value:"Update the affected package(s).");
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/10/25");

  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux");
  script_set_attribute(attribute:"plugin_type", value:"local");
 script_set_attribute(attribute:"plugin_publication_date", value:"2011/10/26");
  script_end_attributes();
    
  script_category(ACT_GATHER_INFO);
  script_family(english:"Ubuntu Local Security Checks");

  script_copyright("Ubuntu Security Notice (C) 2011 Canonical, Inc. / NASL script (C) 2011-2016 Tenable Network Security, Inc.");

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

  exit(0);
}

include("ubuntu.inc");

if (!get_kb_item("Host/local_checks_enabled")) exit(0, "Local checks are not enabled.");
if (!get_kb_item("Host/Ubuntu/release")) exit(0, "The host is not running Ubuntu.");
if (!get_kb_item("Host/Debian/dpkg-l")) exit(1, "Could not obtain the list of installed packages.");

flag = 0;

if (ubuntu_check(osver:"10.10", pkgname:"linux-image-2.6.35-903-omap4", pkgver:"2.6.35-903.26")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:ubuntu_report_get());
  else security_hole(0);
  exit(0);
}
else exit(0, "The host is not affected.");