Possible Backdoor: Ingreslock

# SPDX-FileCopyrightText: 2012 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("1.3.6.1.4.1.25623.1.0.103549");
  script_version("2023-07-25T05:05:58+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:"2023-07-25 05:05:58 +0000 (Tue, 25 Jul 2023)");
  script_tag(name:"creation_date", value:"2012-08-22 16:21:38 +0200 (Wed, 22 Aug 2012)");
  script_name("Possible Backdoor: Ingreslock");
  script_category(ACT_ATTACK);
  script_family("Gain a shell remotely");
  script_copyright("Copyright (C) 2012 Greenbone AG");
  script_dependencies("find_service1.nasl", "find_service2.nasl", "secpod_open_tcp_ports.nasl");
  script_mandatory_keys("TCP/PORTS");

  script_tag(name:"summary", value:"A backdoor is installed on the remote host.");

  script_tag(name:"impact", value:"Attackers can exploit this issue to execute arbitrary commands in the
  context of the application. Successful attacks will compromise the affected isystem.");

  script_tag(name:"solution", value:"A whole cleanup of the infected system is recommended.");

  script_tag(name:"qod_type", value:"remote_vul");
  script_tag(name:"solution_type", value:"Workaround");

  exit(0);
}

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

port = tcp_get_all_port();

soc = open_sock_tcp( port );
if( ! soc )
  exit( 0 );

recv = recv( socket:soc, length:1024 );
send( socket:soc, data:'id;\r\n\r\n' );
recv = recv( socket:soc, length:1024 );
close( soc );

if( recv =~ "uid=[0-9]+.*gid=[0-9]+" ) {
  uid = eregmatch( pattern:"(uid=[0-9]+.*gid=[0-9]+[^ ]+)", string:recv );
  if( uid )
    report = "The service is answering to an 'id;' command with the following response: " + uid[1];
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );