RHEL 7 : kernel (RHSA-2019:3220)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:3220. The text 
# itself is copyright (C) Red Hat, Inc.
#

include('compat.inc');

if (description)
{
  script_id(130376);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/05");

  script_cve_id("CVE-2019-1125", "CVE-2019-3900", "CVE-2019-9506");
  script_xref(name:"RHSA", value:"2019:3220");
  script_xref(name:"CEA-ID", value:"CEA-2021-0025");

  script_name(english:"RHEL 7 : kernel (RHSA-2019:3220)");

  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: vhost_net: infinite loop while receiving packets leads to
DoS (CVE-2019-3900)

* 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) :

* [mlx4] VXLAN over VLAN TCP segmentation (BZ#1734325)

* Race condition in /dev/sg due to missing synchronization causes
corruption in RHV (BZ#1737378)

* [FJ7.6 Bug]: [REG] kernel: ipc: ipc_free should use kvfree
(BZ#1740177)

* high update_cfs_rq_blocked_load contention (BZ#1740179)

* kvm: backport cpuidle-haltpoll driver (BZ#1740191)

* Growing unreclaimable slab memory (BZ#1741919)

* [Hyper-V]vPCI devices cannot allocate IRQs vectors in a Hyper-V VM
with > 240 vCPUs (i.e., when in x2APIC mode) (BZ#1743323)

* NFSv4.0 client sending a double CLOSE (leading to EIO application
failure) (BZ#1744945)

* powerpc/pseries: Fix uninitialized timer reset on migration /
powerpc/pseries /mobility: Extend start/stop topology update scope
(LPM) (BZ#1745441)

* ISST-LTE:PVM:Zeppelin :LPM: Failure logs and stack trace seen during
LPM (POWER9/P9) (BZ#1745448)

* [LLNL 7.5 Bug] slab leak causing a crash when using kmem control
group (BZ# 1748237)

* [Azure] CRI-RDOS | [RHEL 7.8] Live migration only takes 10 seconds,
but the VM was unavailable for 2 hours (BZ#1748238)

* Allows macvlan to operate correctly over the active-backup mode to
support bonding events (BZ#1749291)

* debug kernel reports scheduling while atomic bug in EFI code
(BZ#1755324)");
  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-2019:3220");
  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-2019-3900");
  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:"2019/04/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/30");

  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) 2019-2022 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-2019-1125", "CVE-2019-3900", "CVE-2019-9506");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for RHSA-2019:3220");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2019:3220";
  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:"6", cpu:"x86_64", reference:"bpftool-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", reference:"kernel-abi-whitelists-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-debug-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-debug-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-debug-debuginfo-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-debug-debuginfo-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-debug-devel-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-debug-devel-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-debuginfo-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-debuginfo-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-debuginfo-common-s390x-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-devel-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-devel-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", reference:"kernel-doc-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-headers-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-headers-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-kdump-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-kdump-debuginfo-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"kernel-kdump-devel-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-tools-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-tools-debuginfo-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-tools-libs-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"kernel-tools-libs-devel-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"perf-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"perf-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"perf-debuginfo-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"perf-debuginfo-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"python-perf-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"python-perf-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"s390x", reference:"python-perf-debuginfo-3.10.0-957.38.1.el7")) flag++;
  if (rpm_check(release:"RHEL7", sp:"6", cpu:"x86_64", reference:"python-perf-debuginfo-3.10.0-957.38.1.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, "bpftool / kernel / kernel-abi-whitelists / kernel-debug / etc");
  }
}