Vulnerabilities > CVE-2011-1170 - Information Exposure 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 Oracle Linux Security Advisory ELSA-2011-2016.
#

include("compat.inc");

if (description)
{
  script_id(68417);
  script_version("1.12");
  script_cvs_date("Date: 2019/10/25 13:36:09");

  script_cve_id("CVE-2010-4251", "CVE-2011-1023", "CVE-2011-1082", "CVE-2011-1163", "CVE-2011-1170", "CVE-2011-1171", "CVE-2011-1172", "CVE-2011-1494", "CVE-2011-1495");

  script_name(english:"Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2011-2016)");
  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:

[2.6.32-100.28.17.el6]
- [net] Extend prot->slab size when add sock extend fields.

[2.6.32-100.28.16.el6]
- kernel: Fix unlimited socket backlog DoS {CVE-2010-4251}
- RDS: Fix congestion issues for loopback
- rds: prevent BUG_ON triggering on congestion map updates {CVE-2011-1023}
- epoll: prevent creating circular epoll structures {CVE-2011-1082}
- fs: fix corrupted OSF partition table parsing {CVE-2011-1163}
- fs: Increase OSF partition limit from 8 to 18 {CVE-2011-1163}
- netfilter: arp_tables: fix infoleak to userspace {CVE-2011-1170}
- netfilter: ip_tables: fix infoleak to userspace {CVE-2011-1171}
- ipv6: netfilter: ip6_tables: fix infoleak to userspace {CVE-2011-1172}
- [SCSI] mpt2sas: prevent heap overflows and unchecked reads 
{CVE-2011-1494, CVE-2011-1495}"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2011-May/002147.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2011-May/002148.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected unbreakable enterprise kernel packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/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-2.6.32-100.28.17.el5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-100.28.17.el5debug");
  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:"2011/04/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/05/24");
  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 ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2010-4251", "CVE-2011-1023", "CVE-2011-1082", "CVE-2011-1163", "CVE-2011-1170", "CVE-2011-1171", "CVE-2011-1172", "CVE-2011-1494", "CVE-2011-1495");  
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for ELSA-2011-2016");
  }
  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-2.6.32-100.28.17.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-uek-debug-2.6.32") && rpm_check(release:"EL5", cpu:"x86_64", reference:"kernel-uek-debug-2.6.32-100.28.17.el5")) 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-2.6.32-100.28.17.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-uek-devel-2.6.32") && rpm_check(release:"EL5", cpu:"x86_64", reference:"kernel-uek-devel-2.6.32-100.28.17.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-uek-doc-2.6.32") && rpm_check(release:"EL5", cpu:"x86_64", reference:"kernel-uek-doc-2.6.32-100.28.17.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-uek-firmware-2.6.32") && rpm_check(release:"EL5", cpu:"x86_64", reference:"kernel-uek-firmware-2.6.32-100.28.17.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-uek-headers-2.6.32") && rpm_check(release:"EL5", cpu:"x86_64", reference:"kernel-uek-headers-2.6.32-100.28.17.el5")) flag++;
if (rpm_check(release:"EL5", cpu:"x86_64", reference:"ofa-2.6.32-100.28.17.el5-1.5.1-4.0.28")) flag++;
if (rpm_check(release:"EL5", cpu:"x86_64", reference:"ofa-2.6.32-100.28.17.el5debug-1.5.1-4.0.28")) flag++;

if (rpm_exists(release:"EL6", rpm:"kernel-uek-2.6.32") && rpm_check(release:"EL6", cpu:"x86_64", reference:"kernel-uek-2.6.32-100.28.17.el6")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-debug-2.6.32") && rpm_check(release:"EL6", cpu:"x86_64", reference:"kernel-uek-debug-2.6.32-100.28.17.el6")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-debug-devel-2.6.32") && rpm_check(release:"EL6", cpu:"x86_64", reference:"kernel-uek-debug-devel-2.6.32-100.28.17.el6")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-devel-2.6.32") && rpm_check(release:"EL6", cpu:"x86_64", reference:"kernel-uek-devel-2.6.32-100.28.17.el6")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-doc-2.6.32") && rpm_check(release:"EL6", cpu:"x86_64", reference:"kernel-uek-doc-2.6.32-100.28.17.el6")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-firmware-2.6.32") && rpm_check(release:"EL6", cpu:"x86_64", reference:"kernel-uek-firmware-2.6.32-100.28.17.el6")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-headers-2.6.32") && rpm_check(release:"EL6", cpu:"x86_64", reference:"kernel-uek-headers-2.6.32-100.28.17.el6")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "affected kernel");
}