SUSE SLED15 / SLES15 Security Update : snakeyaml (SUSE-SU-2022:3397-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2022:3397-1. The text itself
# is copyright (C) SUSE.
##

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

if (description)
{
  script_id(165488);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/13");

  script_cve_id(
    "CVE-2020-13936",
    "CVE-2022-25857",
    "CVE-2022-38749",
    "CVE-2022-38750",
    "CVE-2022-38751",
    "CVE-2022-38752"
  );
  script_xref(name:"SuSE", value:"SUSE-SU-2022:3397-1");

  script_name(english:"SUSE SLED15 / SLES15 Security Update : snakeyaml (SUSE-SU-2022:3397-1)");

  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 SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has a package installed that is affected by
multiple vulnerabilities as referenced in the SUSE-SU-2022:3397-1 advisory.

  - An attacker that is able to modify Velocity templates may execute arbitrary Java code or run arbitrary
    system commands with the same privileges as the account running the Servlet container. This applies to
    applications that allow untrusted users to upload/modify velocity templates running Apache Velocity Engine
    versions up to 2.2. (CVE-2020-13936)

  - The package org.yaml:snakeyaml from 0 and before 1.31 are vulnerable to Denial of Service (DoS) due
    missing to nested depth limitation for collections. (CVE-2022-25857)

  - Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DOS). If the
    parser is running on user supplied input, an attacker may supply content that causes the parser to crash
    by stackoverflow. (CVE-2022-38749, CVE-2022-38750, CVE-2022-38751)

  - Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DOS). If the
    parser is running on user supplied input, an attacker may supply content that causes the parser to crash
    by stack-overflow. (CVE-2022-38752)

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/1202932");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1203149");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1203153");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1203154");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1203158");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-13936");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-25857");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-38749");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-38750");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-38751");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-38752");
  # https://lists.suse.com/pipermail/sle-security-updates/2022-September/012382.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f65e93b4");
  script_set_attribute(attribute:"solution", value:
"Update the affected snakeyaml package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-13936");

  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:"2021/03/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/09/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/09/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:snakeyaml");
  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) 2022-2023 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)") audit(AUDIT_OS_NOT, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED15|SLED_SAP15|SLES15|SLES_SAP15)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15', 'SUSE (' + 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 (' + os_ver + ')', cpu);

var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLED15" && (! preg(pattern:"^(3|4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED15 SP3/4", os_ver + " SP" + service_pack);
if (os_ver == "SLED_SAP15" && (! preg(pattern:"^(3|4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED_SAP15 SP3/4", os_ver + " SP" + service_pack);
if (os_ver == "SLES15" && (! preg(pattern:"^(3|4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP3/4", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP15" && (! preg(pattern:"^(3|4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP15 SP3/4", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'snakeyaml-1.31-150200.3.8.1', 'sp':'3', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.3']},
    {'reference':'snakeyaml-1.31-150200.3.8.1', 'sp':'3', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.3']},
    {'reference':'snakeyaml-1.31-150200.3.8.1', 'sp':'4', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'snakeyaml-1.31-150200.3.8.1', 'sp':'4', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'snakeyaml-1.31-150200.3.8.1', 'sp':'3', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.3', 'sle-module-development-tools-release-15.3', 'sled-release-15.3', 'sles-release-15.3']},
    {'reference':'snakeyaml-1.31-150200.3.8.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.3', 'sle-module-development-tools-release-15.3', 'sled-release-15.3', 'sles-release-15.3']},
    {'reference':'snakeyaml-1.31-150200.3.8.1', 'sp':'4', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.4', 'sle-module-development-tools-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'snakeyaml-1.31-150200.3.8.1', 'sp':'4', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.4', 'sle-module-development-tools-release-15.4', 'sled-release-15.4', 'sles-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_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, 'snakeyaml');
}