RHEL 7 : kernel (RHSA-2019:2566)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:2566. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(128300);
  script_version("1.5");
  script_cvs_date("Date: 2019/10/24 15:35:47");

  script_cve_id("CVE-2018-13405");
  script_xref(name:"RHSA", value:"2019:2566");

  script_name(english:"RHEL 7 : kernel (RHSA-2019:2566)");
  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:
"An update for kernel is now available for Red Hat Enterprise Linux 7.5
Extended Update Support.

Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

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

Security Fix(es) :

* kernel: Missing check in fs/inode.c:inode_init_owner() does not
clear SGID bit on non-directories for non-members (CVE-2018-13405)

For more details about the security issue(s), including the impact, a
CVSS score, acknowledgments, and other related information, refer to
the CVE page(s) listed in the References section.

Bug Fix(es) :

* [Dell EMC 7.6 BUG] File system corrupting with I/O Stress on H330
PERC on AMD Systems (BZ#1698337)

* [RHEL7.7] Refined TSC clocksource calibration occasionally fails on
some SkyLake-X servers (BZ#1719780)

* Poor system performance from thundering herd of kworkers competing
for mddev->flush_bio ownership (BZ#1721533)

* fragmented packets timing out (BZ#1729412)

* After update to RHEL 7.6 (3.10.0-957.1.3.el7.x86_64) from 7.4,
customer has experienced multiple panics in kernel at BUG at
drivers/iommu/iova.c:859! (BZ#1731299)

* kernel build: speed up debuginfo extraction (BZ#1731463)

Enhancement(s) :

* [Intel 7.6 FEAT] Graphics Kernel Driver v4.15 updates (BZ#1716309)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2019:2566"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2018-13405"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/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-abi-whitelists");
  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-s390x");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-x86_64");
  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-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perf-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python-perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python-perf-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.5");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/07/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/08/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/28");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 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", "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:"^7\.5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.5", "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-2018-13405");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for RHSA-2019:2566");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2019:2566";
  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:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", reference:"kernel-abi-whitelists-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-debug-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-debug-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-debug-debuginfo-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-debug-debuginfo-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-debug-devel-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-debug-devel-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-debuginfo-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-debuginfo-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-debuginfo-common-s390x-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-devel-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-devel-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", reference:"kernel-doc-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-headers-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-headers-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-kdump-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-kdump-debuginfo-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-kdump-devel-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-tools-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-tools-debuginfo-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-tools-libs-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-tools-libs-devel-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"perf-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"perf-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"perf-debuginfo-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"perf-debuginfo-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"python-perf-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"python-perf-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"python-perf-debuginfo-3.10.0-862.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"python-perf-debuginfo-3.10.0-862.41.1.el7")) 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-abi-whitelists / kernel-debug / etc");
  }
}