ident Service Information Disclosure Vulnerability

# SPDX-FileCopyrightText: 2020 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("1.3.6.1.4.1.25623.1.0.100081");
  script_version("2023-09-12T05:05:19+0000");
  script_tag(name:"last_modification", value:"2023-09-12 05:05:19 +0000 (Tue, 12 Sep 2023)");
  script_tag(name:"creation_date", value:"2020-09-23 12:13:13 +0000 (Wed, 23 Sep 2020)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");

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

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

  script_cve_id("CVE-1999-0629");

  script_name("ident Service Information Disclosure Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2020 Greenbone AG");
  script_family("Useless services");
  script_dependencies("auth_enabled.nasl");
  script_mandatory_keys("ident/detected");

  script_tag(name:"summary", value:"This remote host is running an ident service.");

  script_tag(name:"vuldetect", value:"Checks whether an ident service is exposed on the target
  host.");

  script_tag(name:"insight", value:"Remark: NIST don't see 'configuration issues' as software flaws
  so the referenced CVE has a severity of 0.0. The severity of this VT has been raised by Greenbone
  to still report a configuration issue on the target.");

  script_tag(name:"impact", value:"The ident protocol is considered dangerous because it allows
  attackers to gain a list of usernames on a computer system which can later be used in attacks.");

  script_tag(name:"solution", value:"Disable the ident service.");

  exit(0);
}

if( ! port = get_kb_item( "ident/port" ) )
  exit( 99 );

report = "An ident service was detected on the target system.";
security_message( port:port, data:report );

exit( 0 );