RHEL 7 : kernel (RHSA-2019:2975)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:2975. The text 
# itself is copyright (C) Red Hat, Inc.
#

include('compat.inc');

if (description)
{
  script_id(129738);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/19");

  script_cve_id("CVE-2019-1125", "CVE-2019-9506");
  script_xref(name:"RHSA", value:"2019:2975");

  script_name(english:"RHEL 7 : kernel (RHSA-2019:2975)");

  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) :

* hardware: bluetooth: BR/EDR encryption key negotiation attacks
(KNOB) (CVE-2019-9506)

* kernel: hw: Spectre SWAPGS gadget vulnerability (CVE-2019-1125)

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) :

* TCP packets are segmented when sent to the VLAN device when coming
from VXLAN dev. (BZ#1732810)

* skb head copy occurs when sending traffic over OVS managed VXLAN
tunnel (BZ #1733896)

* [mlx4] VXLAN over VLAN TCP segmentation (BZ#1734306)

* use 'make -jN' for modules_install (BZ#1735082)

* Backport TCP follow-up for small buffers (BZ#1739128)

* [FJ7.6 Bug]: [REG] kernel: ipc: ipc_free should use kvfree
(BZ#1740176)

* RHEL7.6 - powerpc/pseries: Disable CPU hotplug across migrations /
powerpc/ rtas: Fix a potential race between CPU-Offline & Migration
(LPM) (BZ# 1745437)

* RHEL7.6 - powerpc/pseries: Fix uninitialized timer reset on
migration / powerpc/pseries/mobility: Extend start/stop topology
update scope (LPM) (BZ #1745439)

* RHEL7.5 - ISST-LTE:PVM:Zeppelin :LPM: Failure logs and stack trace
seen during LPM (POWER9/P9) (BZ#1745447)");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/articles/4329821");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2019:2975");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2019-1125");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2019-9506");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-9506");

  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:"2019/08/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/09");

  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:"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\.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-2019-1125", "CVE-2019-9506");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for RHSA-2019:2975");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2019:2975";
  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-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", reference:"kernel-abi-whitelists-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-debug-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-debug-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-debug-debuginfo-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-debug-debuginfo-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-debug-devel-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-debug-devel-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-debuginfo-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-debuginfo-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-debuginfo-common-s390x-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-devel-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-devel-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", reference:"kernel-doc-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-headers-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-headers-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-kdump-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-kdump-debuginfo-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"kernel-kdump-devel-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-tools-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-tools-debuginfo-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-tools-libs-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"kernel-tools-libs-devel-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"perf-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"perf-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"perf-debuginfo-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"perf-debuginfo-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"python-perf-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"python-perf-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"s390x", reference:"python-perf-debuginfo-3.10.0-862.43.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"5", cpu:"x86_64", reference:"python-perf-debuginfo-3.10.0-862.43.1.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");
  }
}