SUSE SLES15 / openSUSE 15 Security Update : rubygem-loofah (SUSE-SU-2023:1657-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2023:1657-1. The text itself
# is copyright (C) SUSE.
##

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

if (description)
{
  script_id(173688);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/28");

  script_cve_id("CVE-2022-23514", "CVE-2022-23515", "CVE-2022-23516");
  script_xref(name:"SuSE", value:"SUSE-SU-2023:1657-1");

  script_name(english:"SUSE SLES15 / openSUSE 15 Security Update : rubygem-loofah (SUSE-SU-2023:1657-1)");

  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 SLES15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as
referenced in the SUSE-SU-2023:1657-1 advisory.

  - Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on
    top of Nokogiri. Loofah < 2.19.1 contains an inefficient regular expression that is susceptible to
    excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of
    service through CPU resource consumption. This issue is patched in version 2.19.1. (CVE-2022-23514)

  - Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on
    top of Nokogiri. Loofah >= 2.1.0, < 2.19.1 is vulnerable to cross-site scripting via the image/svg+xml
    media type in data URIs. This issue is patched in version 2.19.1. (CVE-2022-23515)

  - Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on
    top of Nokogiri. Loofah >= 2.2.0, < 2.19.1 uses recursion for sanitizing CDATA sections, making it
    susceptible to stack exhaustion and raising a SystemStackError exception. This may lead to a denial of
    service through CPU resource consumption. This issue is patched in version 2.19.1. Users who are unable to
    upgrade may be able to mitigate this vulnerability by limiting the length of the strings that are
    sanitized. (CVE-2022-23516)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1206415");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1206416");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1206417");
  script_set_attribute(attribute:"see_also", value:"https://lists.suse.com/pipermail/sle-updates/2023-March/028447.html");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-23514");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-23515");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-23516");
  script_set_attribute(attribute:"solution", value:
"Update the affected ruby2.5-rubygem-loofah, ruby2.5-rubygem-loofah-doc and / or ruby2.5-rubygem-loofah-testsuite
packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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-2022-23515");

  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:"2022/12/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/03/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/03/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:ruby2.5-rubygem-loofah");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 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('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item("Host/SuSE/release");
if (isnull(os_release) || os_release !~ "^(SLED|SLES|SUSE)") audit(AUDIT_OS_NOT, "SUSE / openSUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)\d+|SUSE([\d.]+))", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE / openSUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES15|SUSE15\.4)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES15 / openSUSE 15', 'SUSE / openSUSE (' + os_ver + ')');

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, 'SUSE / openSUSE (' + os_ver + ')', cpu);

var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLES15" && (! preg(pattern:"^(1|2|3|4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP1/2/3/4", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'ruby2.5-rubygem-loofah-2.2.2-150000.4.9.1', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
    {'reference':'ruby2.5-rubygem-loofah-doc-2.2.2-150000.4.9.1', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
    {'reference':'ruby2.5-rubygem-loofah-testsuite-2.2.2-150000.4.9.1', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
    {'reference':'ruby2.5-rubygem-loofah-2.2.2-150000.4.9.1', 'sp':'1', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-ha-release-15.1']},
    {'reference':'ruby2.5-rubygem-loofah-2.2.2-150000.4.9.1', 'sp':'2', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-ha-release-15.2']},
    {'reference':'ruby2.5-rubygem-loofah-2.2.2-150000.4.9.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-ha-release-15.3']},
    {'reference':'ruby2.5-rubygem-loofah-2.2.2-150000.4.9.1', 'sp':'4', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-ha-release-15.4']}
];

var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var exists_check = 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['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (exists_check) {
      var check_flag = 0;
      foreach var check (exists_check) {
        if (!rpm_exists(release:_release, rpm:check)) continue;
        check_flag++;
      }
      if (!check_flag) continue;
    }
    if (rpm_check(release:_release, sp:sp, 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, 'ruby2.5-rubygem-loofah / ruby2.5-rubygem-loofah-doc / etc');
}