Vulnerabilities > CVE-2004-0649

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200407-17.
#
# The advisory text is Copyright (C) 2001-2018 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(14550);
  script_version("1.16");
  script_cvs_date("Date: 2019/08/02 13:32:41");

  script_cve_id("CVE-2004-0649");
  script_xref(name:"GLSA", value:"200407-17");

  script_name(english:"GLSA-200407-17 : l2tpd: Buffer overflow");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-200407-17
(l2tpd: Buffer overflow)

    Thomas Walpuski discovered a buffer overflow that may be exploitable by
    sending a specially crafted packet. In order to exploit the vulnerable
    code, an attacker would need to fake the establishment of an L2TP tunnel.
  
Impact :

    A remote attacker may be able to execute arbitrary code with the privileges
    of the user running l2tpd.
  
Workaround :

    There is no known workaround for this vulnerability."
  );
  # http://seclists.org/lists/fulldisclosure/2004/Jun/0094.html
  script_set_attribute(
    attribute:"see_also",
    value:"https://seclists.org/lists/fulldisclosure/2004/Jun/0094.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200407-17"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All users are recommended to upgrade to the latest stable version:
    # emerge sync
    # emerge -pv '>=net-l2tpd-0.69-r2'
    # emerge '>=net-l2tpd-0.69-r2'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:l2tpd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2004/07/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/08/30");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"net-dialup/l2tpd", unaffected:make_list("ge 0.69-r2"), vulnerable:make_list("lt 0.69-r2"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "l2tpd");
}

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-530. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(15367);
  script_version("1.18");
  script_cvs_date("Date: 2019/08/02 13:32:18");

  script_cve_id("CVE-2004-0649");
  script_xref(name:"DSA", value:"530");

  script_name(english:"Debian DSA-530-1 : l2tpd - buffer overflow");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Thomas Walpuski reported a buffer overflow in l2tpd, an implementation
of the layer 2 tunneling protocol, whereby a remote attacker could
potentially cause arbitrary code to be executed by transmitting a
specially crafted packet. The exploitability of this vulnerability has
not been verified."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2004/dsa-530"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"For the current stable distribution (woody), this problem has been
fixed in version 0.67-1.2.

We recommend that you update your l2tpd package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:l2tpd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2004/07/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/29");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 Tenable Network Security, Inc.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"3.0", prefix:"l2tpd", reference:"0.67-1.2")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#
# (C) Tenable Network Security, Inc.
#
#


include("compat.inc");

if (description)
{
 script_id(13659);
 script_version ("1.15");
 script_cve_id("CVE-2004-0649");
 script_bugtraq_id(10466);
 
 script_name(english:"l2tpd < 0.69 control.c write_packet Function Remote Overflow");

 script_set_attribute(attribute:"synopsis", value:
"The remote host is running a network tunneling application that is 
affected by a buffer overflow vulnerability." );
 script_set_attribute(attribute:"description", value:
"The remote host is running a version of l2tpd which is older or
equal to 0.68. 

This version is vulnerable to a buffer overflow which might allow an
attacker to execute arbitrary commands on the remote host with 
super-user privileges." );
 script_set_attribute(attribute:"see_also", value:"https://seclists.org/bugtraq/2004/Jun/73" );
 script_set_attribute(attribute:"solution", value:
"Upgrade to l2tpd 0.69 or later." );
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
 script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
 script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
 script_set_attribute(attribute:"exploit_available", value:"false");

 script_set_attribute(attribute:"plugin_publication_date", value: "2004/07/22");
 script_set_attribute(attribute:"vuln_publication_date", value: "2004/06/07");
 script_cvs_date("Date: 2018/11/15 20:50:22");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_end_attributes();

 script_summary(english:"Determines the version of the remote l2tpd");
 script_category(ACT_GATHER_INFO);
 script_family(english:"Gain a shell remotely");
 script_copyright(english:"This script is Copyright (C) 2004-2018 Tenable Network Security, Inc.");
 script_dependencie("l2tp_detection.nasl");
 script_require_ports("Services/udp/l2tp");
 exit(0);
}

if (! get_kb_item("Services/udp/l2tp") ) exit(0);
port = 1701;
if (! get_udp_port_state(port)) exit(0, "UDP port "+port+" is not open.");
		 
function find_firmware(rep)
{
 local_var firmware, i, len;
 
 for(i=12;i<strlen(rep);i++)
 { 
  len = ord(rep[i]) * 256 + ord(rep[i+1]);
  if(ord(rep[i]) & 0x80)len -= 0x80 * 256;
  if(ord(rep[i+5]) == 6)
  {
   firmware = ord(rep[i+6]) * 256 + ord(rep[i+7]);
   return firmware;
  }
  else i += len - 1;
 }
 return NULL;
}

req =  raw_string(0xC8, 2, 0, 20, 0, 0, 0, 0,0,0,0,0,0,8, 0,0,0,0,0,0);

		 
soc = open_sock_udp(port);
send(socket:soc, data:req);
r = recv(socket:soc, length:1024);
if(!r)exit(0);
close(soc);
if(("l2tpd" >< r) || ("Adtran" >< r))
{
 firmware = find_firmware(rep:r);
 hi = firmware / 256;
 lo = firmware % 256;
 
 if((hi == 0x06)  && (lo < 0x90))security_hole(port:port, proto:"udp");
}