CTorrent/Enhanced CTorrent Buffer Overflow Vulnerability

# 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("1.3.6.1.4.1.25623.1.0.900557");
  script_version("2025-12-11T05:46:19+0000");
  script_tag(name:"last_modification", value:"2025-12-11 05:46:19 +0000 (Thu, 11 Dec 2025)");
  script_tag(name:"creation_date", value:"2009-06-01 09:35:57 +0200 (Mon, 01 Jun 2009)");
  script_tag(name:"cvss_base", value:"9.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_cve_id("CVE-2009-1759");
  script_name("CTorrent/Enhanced CTorrent Buffer Overflow Vulnerability");
  script_xref(name:"URL", value:"http://secunia.com/advisories/34752");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/34584");
  script_xref(name:"URL", value:"http://www.milw0rm.com/exploits/8470");
  script_xref(name:"URL", value:"http://xforce.iss.net/xforce/xfdb/49959");

  script_tag(name:"qod_type", value:"executable_version");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("Buffer overflow");
  script_dependencies("secpod_ctorrent_detect.nasl");
  script_mandatory_keys("CTorrent/CTorrent_or_Enhanced/Installed");
  script_tag(name:"impact", value:"Attackers can exploit this issue by execute arbitrary code via
specially crafted torrent files and can cause denial of service.");
  script_tag(name:"affected", value:"CTorrent version 1.3.4 on Linux.
Enhanced CTorrent version 3.3.2 and prior on Linux.");
  script_tag(name:"insight", value:"A stack based buffer overflow is due to a boundary error within
the function 'btFiles::BuildFromMI()' in btfiles.cpp while processing torrent
files containing a long path.");
  script_tag(name:"solution", value:"Apply the appropriate patch.");
  script_tag(name:"summary", value:"CTorrent/Enhanced CTorrent is prone to a buffer overflow vulnerability.");
  script_tag(name:"solution_type", value:"VendorFix");
  script_xref(name:"URL", value:"http://sourceforge.net/p/dtorrent/bugs/14/");
  script_xref(name:"URL", value:"http://sourceforge.net/p/dtorrent/code/HEAD/tree");
  exit(0);
}

include("version_func.inc");

ctorrentVer = get_kb_item("CTorrent/Ver");
if(ctorrentVer != NULL)
{
  if(version_is_equal(version:ctorrentVer, test_version:"1.3.4"))
  {
    report = report_fixed_ver(installed_version:ctorrentVer, vulnerable_range:"Equal to 1.3.4");
    security_message(port: 0, data: report);
    exit(0);
  }
}

ectorrentVer = get_kb_item("Enhanced/CTorrent/Ver");
if(ectorrentVer != NULL)
{
  if(version_is_less_equal(version:ectorrentVer, test_version:"3.3.2")){
    report = report_fixed_ver(installed_version:ectorrentVer, vulnerable_range:"Less than or equal to 3.3.2");
    security_message(port: 0, data: report);
    exit(0);
  }
}

exit(99);