openSUSE 15 Security Update : kernel (openSUSE-SU-2021:1142-1)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from
# openSUSE Security Update openSUSE-SU-2021:1142-1. The text itself
# is copyright (C) SUSE.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(152467);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/04");

  script_cve_id(
    "CVE-2021-3659",
    "CVE-2021-3679",
    "CVE-2021-21781",
    "CVE-2021-22543",
    "CVE-2021-37576"
  );

  script_name(english:"openSUSE 15 Security Update : kernel (openSUSE-SU-2021:1142-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in
the openSUSE-SU-2021:1142-1 advisory.

  - arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest
    OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e. (CVE-2021-37576)

  - A NULL pointer dereference flaw was found in the Linux kernel's IEEE 802.15.4 wireless networking
    subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the
    system. The highest threat from this vulnerability is to system availability. (CVE-2021-3659)

  - A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was
    found in the way user uses trace ring buffer in a specific way. Only privileged local users (with
    CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.
    (CVE-2021-3679)

  - An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66
    and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read
    the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process's
    memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222
    4.19.177 5.4.99 5.10.17 5.11 (CVE-2021-21781)

  - An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass
    RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users
    with the ability to start and control a VM to read/write random pages of memory and can result in local
    privilege escalation. (CVE-2021-22543)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/802154");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1065729");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1085224");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1094840");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1113295");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1153274");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1154353");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1156395");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1179243");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1183871");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1184114");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1184350");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1184631");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185377");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185902");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1186194");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1186264");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1186482");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187476");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188101");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188405");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188445");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188504");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188620");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188683");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188746");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188747");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188748");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188770");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188771");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188772");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188773");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188774");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188777");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188780");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188781");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188782");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188783");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188784");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188786");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188787");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188788");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188790");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188838");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188842");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188876");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188885");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188973");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1189021");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1189057");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1189077");
  # https://lists.opensuse.org/archives/list/[email protected]/thread/BN7VVRY72WW4I46CQCFBKXWN6CBHKRXO/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7c3b8007");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-21781");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-22543");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-3659");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-3679");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-37576");
  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-2021-37576");

  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:"2021/05/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/08/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/08/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-default-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-default-base-rebuild");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-default-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-kvmsmall");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-kvmsmall-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-macros");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-obs-build");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-obs-qa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-preempt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-preempt-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-source");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-source-vanilla");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kernel-syms");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.2");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include('audit.inc');
include('global_settings.inc');
include('misc_func.inc');
include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var release = get_kb_item('Host/SuSE/release');
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, 'openSUSE');
var os_ver = pregmatch(pattern: "^SUSE([\d.]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'openSUSE');
os_ver = os_ver[1];
if (release !~ "^(SUSE15\.2)$") audit(AUDIT_OS_RELEASE_NOT, 'openSUSE', '15.2', release);
if (!get_kb_item("Host/SuSE/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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'openSUSE ' + os_ver, cpu);

var pkgs = [
    {'reference':'kernel-debug-5.3.18-lp152.87.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-devel-5.3.18-lp152.87.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-default-5.3.18-lp152.87.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-default-base-5.3.18-lp152.87.1.lp152.8.40.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-default-base-rebuild-5.3.18-lp152.87.1.lp152.8.40.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-default-devel-5.3.18-lp152.87.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-devel-5.3.18-lp152.87.1', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-kvmsmall-5.3.18-lp152.87.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-kvmsmall-devel-5.3.18-lp152.87.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-macros-5.3.18-lp152.87.1', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-obs-build-5.3.18-lp152.87.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-obs-qa-5.3.18-lp152.87.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-preempt-5.3.18-lp152.87.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-preempt-devel-5.3.18-lp152.87.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-source-5.3.18-lp152.87.1', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-source-vanilla-5.3.18-lp152.87.1', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-syms-5.3.18-lp152.87.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var reference = NULL;
  var release = NULL;
  var cpu = NULL;
  var rpm_spec_vers_cmp = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) release = package_array['release'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && release) {
    if (rpm_check(release:release, cpu:cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'kernel-debug / kernel-debug-devel / kernel-default / etc');
}