SSH Secure-RPC Weak Encrypted Authentication

# SPDX-FileCopyrightText: 2003 Xue Yong Zhi
# 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("1.3.6.1.4.1.25623.1.0.11340");
  script_version("2023-08-03T05:05:16+0000");
  script_tag(name:"last_modification", value:"2023-08-03 05:05:16 +0000 (Thu, 03 Aug 2023)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/2222");
  script_tag(name:"cvss_base", value:"3.6");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:P/I:P/A:N");
  script_cve_id("CVE-2001-0259");

  script_name("SSH Secure-RPC Weak Encrypted Authentication");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"remote_banner_unreliable");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2003 Xue Yong Zhi");
  script_family("Gain a shell remotely");
  script_dependencies("ssh_detect.nasl");
  script_require_ports("Services/ssh", 22);
  script_mandatory_keys("ssh/server_banner/available");

  script_tag(name:"solution", value:"Patch and new version are available from SSH.");

  script_tag(name:"summary", value:"You are running SSH Communications Security SSH 1.2.27 - 1.2.30.");

  script_tag(name:"insight", value:"With Secure-RPC, this version can allow local attackers to recover a
  SUN-DES-1 magic phrase generated by another user, which the attacker can use to decrypt that user's private key file.");

  exit(0);
}

include("ssh_func.inc");
include("misc_func.inc");
include("port_service_func.inc");

port = ssh_get_port(default:22);
banner = ssh_get_serverbanner(port:port);
if( ! banner )
  exit(0);

#Looking for SSH product version number  < 1.2.30
if(ereg(string:banner, pattern:"SSH-.*-1\.2\.([1-2][0-9]|30)[^0-9]*$", icase:TRUE))
  security_message(port:port);