RHEL 5 : kernel (RHSA-2015:0919)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2015:0919. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(83172);
  script_version("2.9");
  script_cvs_date("Date: 2019/10/24 15:35:39");

  script_cve_id("CVE-2014-8159");
  script_bugtraq_id(73060);
  script_xref(name:"RHSA", value:"2015:0919");

  script_name(english:"RHEL 5 : kernel (RHSA-2015:0919)");
  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 are now available
for Red Hat Enterprise Linux 5.6 Long Life.

Red Hat Product Security has rated this update as having Important
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.

* It was found that the Linux kernel's Infiniband subsystem did not
properly sanitize input parameters while registering memory regions
from user space via the (u)verbs API. A local user with access to a
/dev/infiniband/uverbsX device could use this flaw to crash the system
or, potentially, escalate their privileges on the system.
(CVE-2014-8159, Important)

Red Hat would like to thank Mellanox for reporting this issue.

All kernel users are advised to upgrade to these updated packages,
which contain a backported patch to correct this issue. The system
must be rebooted for this update to take effect."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2015:0919"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2014-8159"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  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: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: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-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:5.6");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/04/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/05/01");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

  script_dependencies("ssh_get_info.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");

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 = eregmatch(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 (! ereg(pattern:"^5\.6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 5.6", "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);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2015:0919";
  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", sp:"6", cpu:"i686", reference:"kernel-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-PAE-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-PAE-debuginfo-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-PAE-devel-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-debug-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-debug-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-debug-debuginfo-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-debug-debuginfo-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-debug-devel-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-debug-devel-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-debuginfo-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-debuginfo-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-debuginfo-common-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-debuginfo-common-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-devel-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-devel-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", reference:"kernel-doc-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i386", reference:"kernel-headers-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-headers-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-xen-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-xen-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-xen-debuginfo-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-xen-debuginfo-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"i686", reference:"kernel-xen-devel-2.6.18-238.55.1.el5")) flag++;
  if (rpm_check(release:"RHEL5", sp:"6", cpu:"x86_64", reference:"kernel-xen-devel-2.6.18-238.55.1.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");
  }
}