AlmaLinux 8 : container-tools:3.0 (ALSA-2021:4222)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from
# AlmaLinux Security Advisory ALSA-2021:4222.
##

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

if (description)
{
  script_id(158851);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/03/11");

  script_cve_id("CVE-2021-3602");
  script_xref(name:"ALSA", value:"2021:4222");

  script_name(english:"AlmaLinux 8 : container-tools:3.0 (ALSA-2021:4222)");

  script_set_attribute(attribute:"synopsis", value:
"The remote AlmaLinux host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the
ALSA-2021:4222 advisory.

  - An information disclosure flaw was found in Buildah, when building containers using chroot isolation.
    Running processes in container builds (e.g. Dockerfile RUN commands) can access environment variables from
    parent and grandparent processes. When run in a container in a CI/CD environment, environment variables
    may include sensitive information that was shared with the container in order to be used only by Buildah
    itself (e.g. container registry credentials). (CVE-2021-3602)

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://errata.almalinux.org/8/ALSA-2021-4222.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-3602");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/11/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/11/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/03/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:buildah");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:buildah-tests");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:cockpit-podman");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:conmon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:container-selinux");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:containernetworking-plugins");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:crit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:criu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:crun");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:fuse-overlayfs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:libslirp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:libslirp-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:oci-seccomp-bpf-hook");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:python3-criu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:runc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:slirp4netns");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:udica");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  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/AlmaLinux/release');
if (isnull(release) || 'AlmaLinux' >!< release) audit(AUDIT_OS_NOT, 'AlmaLinux');
var os_ver = pregmatch(pattern: "AlmaLinux release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'AlmaLinux');
var os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'AlmaLinux 8.x', 'AlmaLinux ' + os_ver);

if (!get_kb_item('Host/AlmaLinux/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, 'AlmaLinux', cpu);

var module_ver = get_kb_item('Host/AlmaLinux/appstream/container-tools');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module container-tools:3.0');
if ('3.0' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module container-tools:' + module_ver);

var appstreams = {
    'container-tools:3.0': [
      {'reference':'buildah-1.19.9-1.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'buildah-tests-1.19.9-1.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cockpit-podman-29-2.module_el8.5.0+2614+87221ce8', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE},
      {'reference':'conmon-2.0.26-1.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'container-selinux-2.167.0-1.module_el8.5.0+2614+87221ce8', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2'},
      {'reference':'containernetworking-plugins-0.9.1-1.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'crit-3.15-1.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'criu-3.15-1.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'crun-0.18-2.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'fuse-overlayfs-1.4.0-2.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libslirp-4.3.1-1.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libslirp-devel-4.3.1-1.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'oci-seccomp-bpf-hook-1.2.0-3.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3-criu-3.15-1.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'runc-1.0.0-72.rc92.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'slirp4netns-1.1.8-1.module_el8.5.0+2614+87221ce8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'udica-0.2.4-1.module_el8.5.0+2614+87221ce8', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
    ]
};

var flag = 0;
var appstreams_found = 0;
foreach module (keys(appstreams)) {
  var appstream = NULL;
  var appstream_name = NULL;
  var appstream_version = NULL;
  var appstream_split = split(module, sep:':', keep:FALSE);
  if (!empty_or_null(appstream_split)) {
    appstream_name = appstream_split[0];
    appstream_version = appstream_split[1];
    if (!empty_or_null(appstream_name)) appstream = get_one_kb_item('Host/AlmaLinux/appstream/' + appstream_name);
  }
  if (!empty_or_null(appstream) && appstream_version == appstream || appstream_name == 'all') {
    appstreams_found++;
    foreach package_array ( appstreams[module] ) {
      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;
      if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
      if (!empty_or_null(package_array['release'])) release = 'Alma-' + package_array['release'];
      if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
      if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
      if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
      if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
      if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
      if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
      if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
      if (reference && release && (!exists_check || rpm_exists(release:release, rpm:exists_check))) {
        if (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)) flag++;
      }
    }
  }
}

if (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module container-tools:3.0');

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_NOTE,
      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, 'buildah / buildah-tests / cockpit-podman / conmon / container-selinux / etc');
}