SSL/TLS: Policy Check Violations

# SPDX-FileCopyrightText: 2016 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.105780");
  script_version("2026-06-23T06:54:08+0000");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"2026-06-23 06:54:08 +0000 (Tue, 23 Jun 2026)");
  script_tag(name:"creation_date", value:"2016-06-28 14:30:12 +0200 (Tue, 28 Jun 2016)");
  script_name("SSL/TLS: Policy Check Violations");
  script_category(ACT_GATHER_INFO);
  script_family("Policy");
  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_dependencies("Policy/gb_policy_tls.nasl", "gb_ssl_tls_version_get.nasl");
  script_mandatory_keys("tls_policy/perform_test", "ssl_tls/port");

  script_tag(name:"summary", value:"SSL/TLS Policy Check Violations.");

  script_xref(name:"URL", value:"https://www.bsi.bund.de/SharedDocs/Downloads/DE/BSI/Publikationen/TechnischeRichtlinien/TR03116/BSI-TR-03116-4.pdf");
  script_xref(name:"Policy", value:"BSI TR-03116-4: 2.1.1 TLS-Versionen und Sessions");

  script_tag(name:"solution", value:"Update or reconfigure the affected service / system / host
  according to the policy requirement.");

  script_tag(name:"qod_type", value:"remote_banner");
  script_tag(name:"solution_type", value:"Mitigation");

  exit(0);
}

include("ssl_funcs.inc");

if( ! port = tls_ssl_get_port() )
  exit( 0 );

if( ! policy_violating_ssl_versions = get_kb_item( "tls_policy/policy_violating_ssl_versions/" + port ) )
  exit( 0 );

minimum_TLS = get_kb_item( "tls_policy/minimum_TLS" );

report  = 'Minimum allowed SSL/TLS version: ' + minimum_TLS + '\n\n';
report += 'The following SSL/TLS versions are supported by the remote service and violating the SSL/TLS policy:\n\n';
report += str_replace( string:policy_violating_ssl_versions, find:" ", replace:'\n' );

security_message( port:port, data:report );

exit( 0 );