RHEL 8 : kernel (RHSA-2020:3010)

##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2020:3010. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(138805);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/11/07");

  script_cve_id(
    "CVE-2019-3016",
    "CVE-2019-19807",
    "CVE-2020-10757",
    "CVE-2020-10766",
    "CVE-2020-10767",
    "CVE-2020-10768",
    "CVE-2020-12653",
    "CVE-2020-12654",
    "CVE-2020-12888"
  );
  script_xref(name:"RHSA", value:"2020:3010");

  script_name(english:"RHEL 8 : kernel (RHSA-2020:3010)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2020:3010 advisory.

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

    Security Fix(es):

    * kernel: use-after-free in sound/core/timer.c (CVE-2019-19807)

    * kernel: kernel: DAX hugepages not considered during mremap (CVE-2020-10757)

    * kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off
    the SSBD protection. (CVE-2020-10766)

    * kernel: Indirect Branch Prediction Barrier is force-disabled when STIBP is unavailable or enhanced IBRS
    is available. (CVE-2020-10767)

    * kernel: Indirect branch speculation can be enabled after it was force-disabled by the
    PR_SPEC_FORCE_DISABLE prctl command. (CVE-2020-10768)

    * kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in
    drivers/net/wireless/marvell/mwifiex/scan.c (CVE-2020-12653)

    * kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in
    drivers/net/wireless/marvell/mwifiex/wmm.c (CVE-2020-12654)

    * Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)

    * kernel: kvm: Information leak within a KVM guest (CVE-2019-3016)

    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):

    * [FJ8.2 Bug]: kernel: retrieving process core dump of the init process (PID 1) fails (BZ#1821378)

    * [FJ8.0 Bug]: System hungs up after setting parameters for hugepages (BZ#1835789)

    * RHEL8.2 Alpha - ISST-LTE:PowerVM: vNIC DLPAR crashes the LPAR (ibmvnic) (BZ#1836229)

    * [sig-network] Services should be rejected when no endpoints exist test fails frequently on RHEL8 nodes
    (BZ#1836302)

    * RHEL8.2 Beta - RHEL8.2 reports EEH errors on internal SAS adapter during HTX run on PMEM (SCM/pmem)
    (BZ#1842406)

    * RHEL8.1 - s390/cio: fix virtio-ccw DMA without PV (BZ#1842620)

    * deadlock between modprobe and netns exit (BZ#1845164)

    * exit_boot failed when install RHEL8.1 (BZ#1846180)

    * http request is taking more time for endpoint running on different host via nodeport service
    (BZ#1847128)

    * RHEL8.1 - zEDC problems on z14 (genwqe/pci) (BZ#1847453)

    * WARNING: CPU: 1 PID: 0 at arch/x86/kernel/apic/vector.c:846 free_moved_vector+0x141/0x150 (BZ#1848545)

    * Backport conntrack race condition fixes (BZ#1851003)

    * nf_conntrack module unload fail and refcount become to negative (BZ#1851005)

    * OVS: backport performance patches from upstream to 8.2z (BZ#1851235)

    * RHEL8.3: backport smp: Allow smp_call_function_single_async() to insert locked csd (BZ#1851406)

    * [DELL EMC 8.2 BUG] NVMe drive is not detected after multiple hotplug (hot add + surprise remove)
    operations (BZ#1852045)

    Enhancement(s):

    * [Mellanox 8.3 FEAT] mlx5: drivers update upto Linux v5.5 (BZ#1843544)

    * [IBM 8.3 FEAT] Update nvme driver to latest level for POWER (BZ#1846405)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://security.access.redhat.com/data/csaf/v2/advisories/2020/rhsa-2020_3010.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?76187047");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2020:3010");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1786078");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1792167");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1831868");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1832530");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1836244");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1842525");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1845840");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1845867");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1845868");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/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: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:"cvss_score_source", value:"CVE-2019-19807");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-12653");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(119, 120, 122, 200, 248, 416, 440);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/07/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/21");

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

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "redhat_repos.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('rpm.inc');
include('rhel.inc');
include('ksplice.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release_list(operator: 'ge', os_version: os_ver, rhel_versions: ['8','8.2'])) audit(AUDIT_OS_NOT, 'Red Hat 8.x / 8.x', 'Red Hat ' + os_ver);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< 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');
  var cve_list = make_list('CVE-2019-3016', 'CVE-2019-19807', 'CVE-2020-10757', 'CVE-2020-10766', 'CVE-2020-10767', 'CVE-2020-10768', 'CVE-2020-12653', 'CVE-2020-12654', 'CVE-2020-12888');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RHSA-2020:3010');
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

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      'content/dist/rhel8/8.8/aarch64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.8/ppc64le/baseos/debug',
      'content/dist/rhel8/8.8/ppc64le/baseos/os',
      'content/dist/rhel8/8.8/ppc64le/baseos/source/SRPMS',
      'content/dist/rhel8/8.8/ppc64le/codeready-builder/debug',
      'content/dist/rhel8/8.8/ppc64le/codeready-builder/os',
      'content/dist/rhel8/8.8/ppc64le/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.8/s390x/baseos/debug',
      'content/dist/rhel8/8.8/s390x/baseos/os',
      'content/dist/rhel8/8.8/s390x/baseos/source/SRPMS',
      'content/dist/rhel8/8.8/s390x/codeready-builder/debug',
      'content/dist/rhel8/8.8/s390x/codeready-builder/os',
      'content/dist/rhel8/8.8/s390x/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.8/x86_64/baseos/debug',
      'content/dist/rhel8/8.8/x86_64/baseos/os',
      'content/dist/rhel8/8.8/x86_64/baseos/source/SRPMS',
      'content/dist/rhel8/8.8/x86_64/codeready-builder/debug',
      'content/dist/rhel8/8.8/x86_64/codeready-builder/os',
      'content/dist/rhel8/8.8/x86_64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.9/aarch64/baseos/debug',
      'content/dist/rhel8/8.9/aarch64/baseos/os',
      'content/dist/rhel8/8.9/aarch64/baseos/source/SRPMS',
      'content/dist/rhel8/8.9/aarch64/codeready-builder/debug',
      'content/dist/rhel8/8.9/aarch64/codeready-builder/os',
      'content/dist/rhel8/8.9/aarch64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.9/ppc64le/baseos/debug',
      'content/dist/rhel8/8.9/ppc64le/baseos/os',
      'content/dist/rhel8/8.9/ppc64le/baseos/source/SRPMS',
      'content/dist/rhel8/8.9/ppc64le/codeready-builder/debug',
      'content/dist/rhel8/8.9/ppc64le/codeready-builder/os',
      'content/dist/rhel8/8.9/ppc64le/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.9/s390x/baseos/debug',
      'content/dist/rhel8/8.9/s390x/baseos/os',
      'content/dist/rhel8/8.9/s390x/baseos/source/SRPMS',
      'content/dist/rhel8/8.9/s390x/codeready-builder/debug',
      'content/dist/rhel8/8.9/s390x/codeready-builder/os',
      'content/dist/rhel8/8.9/s390x/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8.9/x86_64/baseos/debug',
      'content/dist/rhel8/8.9/x86_64/baseos/os',
      'content/dist/rhel8/8.9/x86_64/baseos/source/SRPMS',
      'content/dist/rhel8/8.9/x86_64/codeready-builder/debug',
      'content/dist/rhel8/8.9/x86_64/codeready-builder/os',
      'content/dist/rhel8/8.9/x86_64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8/aarch64/baseos/debug',
      'content/dist/rhel8/8/aarch64/baseos/os',
      'content/dist/rhel8/8/aarch64/baseos/source/SRPMS',
      'content/dist/rhel8/8/aarch64/codeready-builder/debug',
      'content/dist/rhel8/8/aarch64/codeready-builder/os',
      'content/dist/rhel8/8/aarch64/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8/ppc64le/baseos/debug',
      'content/dist/rhel8/8/ppc64le/baseos/os',
      'content/dist/rhel8/8/ppc64le/baseos/source/SRPMS',
      'content/dist/rhel8/8/ppc64le/codeready-builder/debug',
      'content/dist/rhel8/8/ppc64le/codeready-builder/os',
      'content/dist/rhel8/8/ppc64le/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8/s390x/baseos/debug',
      'content/dist/rhel8/8/s390x/baseos/os',
      'content/dist/rhel8/8/s390x/baseos/source/SRPMS',
      'content/dist/rhel8/8/s390x/codeready-builder/debug',
      'content/dist/rhel8/8/s390x/codeready-builder/os',
      'content/dist/rhel8/8/s390x/codeready-builder/source/SRPMS',
      'content/dist/rhel8/8/x86_64/baseos/debug',
      'content/dist/rhel8/8/x86_64/baseos/os',
      'content/dist/rhel8/8/x86_64/baseos/source/SRPMS',
      'content/dist/rhel8/8/x86_64/codeready-builder/debug',
      'content/dist/rhel8/8/x86_64/codeready-builder/os',
      'content/dist/rhel8/8/x86_64/codeready-builder/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'bpftool-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-core-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-cross-headers-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-core-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-devel-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-debug-modules-extra-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-devel-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-headers-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-modules-extra-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-4.18.0-193.13.2.el8_2', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-4.18.0-193.13.2.el8_2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-4.18.0-193.13.2.el8_2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-devel-4.18.0-193.13.2.el8_2', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-devel-4.18.0-193.13.2.el8_2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-tools-libs-devel-4.18.0-193.13.2.el8_2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-zfcpdump-4.18.0-193.13.2.el8_2', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-zfcpdump-core-4.18.0-193.13.2.el8_2', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-zfcpdump-devel-4.18.0-193.13.2.el8_2', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-zfcpdump-modules-4.18.0-193.13.2.el8_2', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-zfcpdump-modules-extra-4.18.0-193.13.2.el8_2', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'perf-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-perf-4.18.0-193.13.2.el8_2', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
  foreach var pkg ( constraint_array['pkgs'] ) {
    var reference = NULL;
    var _release = NULL;
    var sp = NULL;
    var _cpu = NULL;
    var el_string = NULL;
    var rpm_spec_vers_cmp = NULL;
    var epoch = NULL;
    var allowmaj = NULL;
    var exists_check = NULL;
    var cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        _release &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&
        rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
  else extra = rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'bpftool / kernel / kernel-core / kernel-cross-headers / etc');
}