RHEL 7 : kernel (RHSA-2019:4168)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:4168. The text 
# itself is copyright (C) Red Hat, Inc.
#

include('compat.inc');

if (description)
{
  script_id(131982);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/04");

  script_cve_id("CVE-2019-9500");
  script_xref(name:"RHSA", value:"2019:4168");

  script_name(english:"RHEL 7 : kernel (RHSA-2019:4168)");

  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 7.6
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: brcmfmac heap buffer overflow in brcmf_wowl_nd_results
(CVE-2019-9500)

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) :

* [HPEMC 7.7 BUG] Protect against concurrent calls into UV BIOS
(BZ#1720367)

* A cluster node has multiple hung 'mv' processes that are accessing a
gfs2 filesystem. (BZ#1721911)

* alua messages flooding serial console leading to cluster failover
delays (BZ#1754849)

* kernel build: parallelize redhat/mod-sign.sh (BZ#1755329)

* kernel build: speed up module compression step (BZ#1755338)

* Nested VirtualBox VMs on Windows guest has the potential of
impacting memory region allocated to other KVM guests (BZ#1755782)

* [Intel 7.8 Bug] [KVM][CLX] CPUID_7_0_EDX_ARCH_CAPABILITIES is not
enabled in VM. (BZ#1757756)

* OS getting restarted because of driver issue with QLogic Corp.
ISP2532-based 8Gb Fibre Channel to PCI Express HBA [1077:2532] (rev
02). (BZ#1759446)

* patchset for x86/atomic: Fix smp_mb__{before,after}_atomic()
(BZ#1772810)");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2019:4168");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2019-9500");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-9500");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/01/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:bpftool");
  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:7.6");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Red Hat Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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\.6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.6", "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);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2019-9500");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for RHSA-2019:4168");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2019:4168";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      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:"6", cpu:"x86_64", reference:"bpftool-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", reference:"kernel-abi-whitelists-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-debug-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-debug-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-debug-debuginfo-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-debug-debuginfo-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-debug-devel-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-debug-devel-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-debuginfo-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-debuginfo-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-debuginfo-common-s390x-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-devel-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-devel-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", reference:"kernel-doc-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-headers-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-headers-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-kdump-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-kdump-debuginfo-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-kdump-devel-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-tools-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-tools-debuginfo-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-tools-libs-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-tools-libs-devel-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"perf-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"perf-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"perf-debuginfo-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"perf-debuginfo-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"python-perf-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"python-perf-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"python-perf-debuginfo-3.10.0-957.41.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"python-perf-debuginfo-3.10.0-957.41.1.el7")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      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, "bpftool / kernel / kernel-abi-whitelists / kernel-debug / etc");
  }
}