openSUSE 15 Security Update : ruby2.5 (openSUSE-SU-2021:1535-1)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from
# openSUSE Security Update openSUSE-SU-2021:1535-1. The text itself
# is copyright (C) SUSE.
##

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

if (description)
{
  script_id(155872);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/22");

  script_cve_id("CVE-2021-31799", "CVE-2021-31810", "CVE-2021-32066");

  script_name(english:"openSUSE 15 Security Update : ruby2.5 (openSUSE-SU-2021:1535-1)");

  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-2021:1535-1 advisory.

  - In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute
    arbitrary code via | and tags in a filename. (CVE-2021-31799)

  - An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP
    server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port.
    This potentially makes curl extract information about services that are otherwise private and not
    disclosed (e.g., the attacker can conduct port scans and service banner extractions). (CVE-2021-31810)

  - An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does
    not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-
    middle attackers to bypass the TLS protections by leveraging a network position between the client and the
    registry to block the StartTLS command, aka a StartTLS stripping attack. (CVE-2021-32066)

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/1188160");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188161");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1190375");
  # https://lists.opensuse.org/archives/list/[email protected]/thread/SFO6LZPCK3BJ6OA3FTD3UWQI47BKDQBA/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5aea85e7");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-31799");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-31810");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-32066");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:N/AC:H/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-2021-32066");

  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:"2021/05/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/12/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/12/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libruby2_5-2_5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:ruby2.5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:ruby2.5-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:ruby2.5-devel-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:ruby2.5-stdlib");
  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':'libruby2_5-2_5-2.5.9-lp152.2.9.1', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ruby2.5-2.5.9-lp152.2.9.1', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ruby2.5-devel-2.5.9-lp152.2.9.1', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ruby2.5-devel-extra-2.5.9-lp152.2.9.1', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'ruby2.5-stdlib-2.5.9-lp152.2.9.1', '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_WARNING,
      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, 'libruby2_5-2_5 / ruby2.5 / ruby2.5-devel / ruby2.5-devel-extra / etc');
}