RHEL 5 : kernel (RHSA-2012:0150)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2012:0150. The text 
# itself is copyright (C) Red Hat, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(58052);
  script_version("1.22");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2011-1083");
  script_bugtraq_id(46630);
  script_xref(name:"RHSA", value:"2012:0150");

  script_name(english:"RHEL 5 : kernel (RHSA-2012:0150)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated kernel packages that fix one security issue, address several
hundred bugs, and add numerous enhancements are now available as part
of the ongoing support and maintenance of Red Hat Enterprise Linux
version 5. This is the eighth regular update.

The Red Hat Security Response Team has rated this update as having
moderate security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from
the CVE link in the References section.

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

This update fixes the following security issue :

* A flaw was found in the way the Linux kernel's Event Poll (epoll)
subsystem handled large, nested epoll structures. A local,
unprivileged user could use this flaw to cause a denial of service.
(CVE-2011-1083, Moderate)

Red Hat would like to thank Nelson Elhage for reporting this issue.

These updated kernel packages include a number of bug fixes and
enhancements. Space precludes documenting all of these changes in this
advisory. Users are directed to the Red Hat Enterprise Linux 5.8
Technical Notes, linked to in the References, for information on the
most significant of these changes.

All Red Hat Enterprise Linux 5 users are advised to install these
updated packages, which correct these issues and add these
enhancements. The system must be rebooted for this update to take
effect."
  );
  # https://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?056c0c27"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2012:0150"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2011-1083"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/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:redhat:enterprise_linux:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-PAE");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-PAE-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-PAE-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-kdump");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-kdump-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-xen-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-xen-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");

  script_set_attribute(attribute:"vuln_publication_date", value:"2011/04/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/02/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/02/21");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

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

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 5.x", "Red Hat " + 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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2011-1083");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for RHSA-2012:0150");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2012:0150";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-PAE-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-PAE-debuginfo-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-PAE-devel-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-debug-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-debug-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-debug-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-debug-debuginfo-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-debug-debuginfo-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-debug-debuginfo-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-debug-devel-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-debug-devel-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-debug-devel-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-debuginfo-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-debuginfo-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-debuginfo-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-debuginfo-common-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-debuginfo-common-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-debuginfo-common-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-devel-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-devel-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-devel-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", reference:"kernel-doc-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i386", reference:"kernel-headers-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-headers-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-headers-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-kdump-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-kdump-debuginfo-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-kdump-devel-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-xen-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-xen-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-xen-debuginfo-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-xen-debuginfo-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-xen-devel-2.6.18-308.el5")) flag++;
  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-xen-devel-2.6.18-308.el5")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel / kernel-PAE / kernel-PAE-debuginfo / kernel-PAE-devel / etc");
  }
}