SUSE SLED15 / SLES15 / openSUSE 15 Security Update : openssl-3 (SUSE-SU-2023:4189-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2023:4189-1. The text itself
# is copyright (C) SUSE.
##

include('compat.inc');

if (description)
{
  script_id(183899);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/08");

  script_cve_id("CVE-2023-3817", "CVE-2023-5363");
  script_xref(name:"SuSE", value:"SUSE-SU-2023:4189-1");
  script_xref(name:"IAVA", value:"2023-A-0582-S");

  script_name(english:"SUSE SLED15 / SLES15 / openSUSE 15 Security Update : openssl-3 (SUSE-SU-2023:4189-1)");

  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 / openSUSE 15 host has packages installed that are
affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4189-1 advisory.

  - Issue summary: Checking excessively long DH keys or parameters may be very slow. Impact summary:
    Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key
    or DH parameters may experience long delays. Where the key or parameters that are being checked have been
    obtained from an untrusted source this may lead to a Denial of Service. The function DH_check() performs
    various checks on DH parameters. After fixing CVE-2023-3446 it was discovered that a large q parameter
    value can also trigger an overly long computation during some of these checks. A correct q value, if
    present, cannot be larger than the modulus p parameter, thus it is unnecessary to perform these checks if
    q is larger than p. An application that calls DH_check() and supplies a key or parameters obtained from an
    untrusted source could be vulnerable to a Denial of Service attack. The function DH_check() is itself
    called by a number of other OpenSSL functions. An application calling any of those other functions may
    similarly be affected. The other functions affected by this are DH_check_ex() and EVP_PKEY_param_check().
    Also vulnerable are the OpenSSL dhparam and pkeyparam command line applications when using the -check
    option. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS
    providers are not affected by this issue. (CVE-2023-3817)

  - Issue summary: A bug has been identified in the processing of key and initialisation vector (IV) lengths.
    This can lead to potential truncation or overruns during the initialisation of some symmetric ciphers.
    Impact summary: A truncation in the IV can result in non-uniqueness, which could result in loss of
    confidentiality for some cipher modes. When calling EVP_EncryptInit_ex2(), EVP_DecryptInit_ex2() or
    EVP_CipherInit_ex2() the provided OSSL_PARAM array is processed after the key and IV have been
    established. Any alterations to the key length, via the keylen parameter or the IV length, via the
    ivlen parameter, within the OSSL_PARAM array will not take effect as intended, potentially causing
    truncation or overreading of these values. The following ciphers and cipher modes are impacted: RC2, RC4,
    RC5, CCM, GCM and OCB. For the CCM, GCM and OCB cipher modes, truncation of the IV can result in loss of
    confidentiality. For example, when following NIST's SP 800-38D section 8.2.1 guidance for constructing a
    deterministic IV for AES in GCM mode, truncation of the counter portion could lead to IV reuse. Both
    truncations and overruns of the key and overruns of the IV will produce incorrect results and could, in
    some cases, trigger a memory exception. However, these issues are not currently assessed as security
    critical. Changing the key and/or IV lengths is not considered to be a common operation and the vulnerable
    API was recently introduced. Furthermore it is likely that application developers will have spotted this
    problem during testing since decryption would fail unless both peers in the communication were similarly
    vulnerable. For these reasons we expect the probability of an application being vulnerable to this to be
    quite low. However if an application is vulnerable then this issue is considered very serious. For these
    reasons we have assessed this issue as Moderate severity overall. The OpenSSL SSL/TLS implementation is
    not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this because the
    issue lies outside of the FIPS provider boundary. OpenSSL 3.1 and 3.0 are vulnerable to this issue.
    (CVE-2023-5363)

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/1213853");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1216163");
  # https://lists.suse.com/pipermail/sle-security-updates/2023-October/016835.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?dff8c3b0");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-3817");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-5363");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/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:N/AC:L/PR:N/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-2023-5363");

  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:"2023/07/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/10/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/10/26");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libopenssl-3-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libopenssl3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssl-3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2023-2024 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)(?:_SAP)?\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:"^(SLED15|SLED_SAP15|SLES15|SLES_SAP15|SUSE15\.4)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / 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 == "SLED15" && (! preg(pattern:"^(4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED15 SP4", os_ver + " SP" + service_pack);
if (os_ver == "SLED_SAP15" && (! preg(pattern:"^(4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED_SAP15 SP4", os_ver + " SP" + service_pack);
if (os_ver == "SLES15" && (! preg(pattern:"^(4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP4", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP15" && (! preg(pattern:"^(4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP15 SP4", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'libopenssl-3-devel-3.0.8-150400.4.37.1', 'sp':'4', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'libopenssl-3-devel-3.0.8-150400.4.37.1', 'sp':'4', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'libopenssl3-3.0.8-150400.4.37.1', 'sp':'4', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'libopenssl3-3.0.8-150400.4.37.1', 'sp':'4', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'openssl-3-3.0.8-150400.4.37.1', 'sp':'4', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'openssl-3-3.0.8-150400.4.37.1', 'sp':'4', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'libopenssl-3-devel-3.0.8-150400.4.37.1', 'sp':'4', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.4', 'SUSE-Manager-Proxy-release-4.3', 'SUSE-Manager-Server-release-4.3', 'sle-module-basesystem-release-15.4', 'sled-release-15.4', 'sles-release-15.4', 'suse-manager-server-release-4.3']},
    {'reference':'libopenssl-3-devel-3.0.8-150400.4.37.1', 'sp':'4', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.4', 'SUSE-Manager-Proxy-release-4.3', 'SUSE-Manager-Server-release-4.3', 'sle-module-basesystem-release-15.4', 'sled-release-15.4', 'sles-release-15.4', 'suse-manager-server-release-4.3']},
    {'reference':'libopenssl3-3.0.8-150400.4.37.1', 'sp':'4', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.4', 'SUSE-Manager-Proxy-release-4.3', 'SUSE-Manager-Server-release-4.3', 'sle-module-basesystem-release-15.4', 'sled-release-15.4', 'sles-release-15.4', 'suse-manager-server-release-4.3']},
    {'reference':'libopenssl3-3.0.8-150400.4.37.1', 'sp':'4', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.4', 'SUSE-Manager-Proxy-release-4.3', 'SUSE-Manager-Server-release-4.3', 'sle-module-basesystem-release-15.4', 'sled-release-15.4', 'sles-release-15.4', 'suse-manager-server-release-4.3']},
    {'reference':'openssl-3-3.0.8-150400.4.37.1', 'sp':'4', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.4', 'SUSE-Manager-Proxy-release-4.3', 'SUSE-Manager-Server-release-4.3', 'sle-module-basesystem-release-15.4', 'sled-release-15.4', 'sles-release-15.4', 'suse-manager-server-release-4.3']},
    {'reference':'openssl-3-3.0.8-150400.4.37.1', 'sp':'4', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.4', 'SUSE-Manager-Proxy-release-4.3', 'SUSE-Manager-Server-release-4.3', 'sle-module-basesystem-release-15.4', 'sled-release-15.4', 'sles-release-15.4', 'suse-manager-server-release-4.3']},
    {'reference':'libopenssl-3-devel-3.0.8-150400.4.37.1', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
    {'reference':'libopenssl-3-devel-32bit-3.0.8-150400.4.37.1', 'cpu':'x86_64', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
    {'reference':'libopenssl3-3.0.8-150400.4.37.1', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
    {'reference':'libopenssl3-32bit-3.0.8-150400.4.37.1', 'cpu':'x86_64', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
    {'reference':'openssl-3-3.0.8-150400.4.37.1', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']},
    {'reference':'openssl-3-doc-3.0.8-150400.4.37.1', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-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, 'libopenssl-3-devel / libopenssl-3-devel-32bit / libopenssl3 / etc');
}