Vulnerabilities > CVE-2005-0256 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Washington University Wu-Ftpd 2.6.1/2.6.2

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

# References:
# https://labs.idefense.com/verisign/intelligence/2009/vulnerabilities/display.php?id=207
#


include("compat.inc");


if (description)
{
  script_id(17602);
  script_version("1.19");
  script_cvs_date("Date: 2018/08/15 16:35:43");

  script_cve_id("CVE-2005-0256");

  script_name(english:"WU-FTPD wu_fnmatch() Function File Globbing Remote DoS");
  script_summary(english:"Sends 'LIST *****[...]*.*' to the FTP server");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote FTP server has a denial of service vulnerability."
  );
  script_set_attribute(attribute:"description", value:
"The version of WU-FTPD running on the remote host exhausts all
available resources on the server when it repeatedly receives
the following command :

LIST *****[...]*.*

This issue has been confirmed in WU-FTPD 2.6.2 and earlier.");
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bad5e32a");
  script_set_attribute(
    attribute:"solution", 
    value:"Apply the latest vendor patches."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_cwe_id(119);
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/03/23");
  script_set_attribute(attribute:"vuln_publication_date", value:"2005/02/25");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_end_attributes();

   script_category(ACT_DENIAL);
   script_family(english: "FTP");

   script_copyright(english: "Copyright (C) 2005-2018 Tenable Network Security, Inc.");
   script_dependencie("ftpserver_detect_type_nd_version.nasl", "ftp_anonymous.nasl");
   script_require_ports("Services/ftp", 21);
   exit(0);
}

include("audit.inc");
include('global_settings.inc');
include("ftp_func.inc");

port = get_ftp_port(default: 21);

banner = get_ftp_banner(port: port);

if (safe_checks())
{
 if (egrep(string:banner, pattern:" FTP .*Version (wu|wuftpd)-2\.6\.(1|2|2\(1\)) ")) security_hole(port);
 exit(0);
}

# Uncomment next line if there are too many false positive
# if (report_paranoia <= 0 && banner && "wu" >!< banner) exit(0);

if (!banner || ("Version wu-" >!< banner &&
                "Version wuftpd-" >!< banner))
  exit (0);

login = get_kb_item("ftp/login");
password = get_kb_item("ftp/password");

if (supplied_logins_only && (isnull(login) || isnull(password)))
  audit(AUDIT_SUPPLIED_LOGINS_ONLY);

if (! login) login = "anonymous";
if (! password) password = "[email protected]";

for (i = 0; i < 2; i ++)
{
 soc = open_sock_tcp(port);
 if (! soc ||
     ! ftp_authenticate(socket:soc, user:login, pass:password))
  exit(0);
 pasv = ftp_pasv(socket: soc);
 if (! pasv) exit(1);
 soc2 = open_sock_tcp(pasv);
 if (! soc2) exit(1);
 # Above 194 *, the server answers "sorry input line too long"
 if (i)
 send(socket: soc, data: 'LIST ***********************************************************************************************************************************************************************************************.*\r\n');
 else
 send(socket: soc, data: 'LIST *.*\r\n');
 t1 = unixtime();
 b = ftp_recv_line(socket:soc);
 repeat
  data = recv(socket: soc2, length: 1024);
 until (! data);
 t[i] = unixtime() - t1;
 #b = ftp_recv_line(socket:soc);
 close(soc); soc = NULL;
 close(soc2);
}

if (t[0] == 0) t[0] = 1;
if (t[1] > 3 * t[0]) security_hole(port);

#%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-705. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(18010);
  script_version("1.21");
  script_cvs_date("Date: 2019/08/02 13:32:18");

  script_cve_id("CVE-2003-0854", "CVE-2005-0256");
  script_xref(name:"DSA", value:"705");

  script_name(english:"Debian DSA-705-1 : wu-ftpd - missing input sanitising");
  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:
"Several denial of service conditions have been discovered in wu-ftpd,
the popular FTP daemon. The Common Vulnerabilities and Exposures
project identifies the following problems :

  - CAN-2005-0256
    Adam Zabrocki discovered a denial of service condition
    in wu-ftpd that could be exploited by a remote user and
    cause the server to slow down by resource exhaustion.

  - CAN-2003-0854

    Georgi Guninski discovered that /bin/ls may be called
    from within wu-ftpd in a way that will result in large
    memory consumption and hence slow down the server."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2005/dsa-705"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the wu-ftpd package.

For the stable distribution (woody) these problems have been fixed in
version 2.6.2-3woody5."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_cwe_id(119);

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

  script_set_attribute(attribute:"patch_publication_date", value:"2005/04/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/04/11");
  script_set_attribute(attribute:"vuln_publication_date", value:"2003/05/16");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2005-2019 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:"wu-ftpd", reference:"2.6.2-3woody5")) flag++;
if (deb_check(release:"3.0", prefix:"wu-ftpd-academ", reference:"2.6.2-3woody5")) flag++;

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

#%NASL_MIN_LEVEL 80502

# @DEPRECATED@
#
# This script has been deprecated as the associated patch is not
# currently a recommended security fix.
#
# Disabled on 2011/09/17.

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

if ( ! defined_func("bn_random") ) exit(0);
include("compat.inc");

if(description)
{
 script_id(19216);
 script_version("1.29");

 script_name(english: "Solaris 10 (x86) : 120086-02");
 script_cve_id("CVE-2005-0256");
 script_set_attribute(attribute: "synopsis", value:
"The remote host is missing Sun Security Patch number 120086-02");
 script_set_attribute(attribute: "description", value:
'SunOS 5.10_x86: patch usr/sbin/in.ftpd.
Date this patch was last updated by Sun : Apr/16/07');
 script_set_attribute(attribute: "solution", value:
"You should install this patch for your system to be up-to-date.");
 script_set_attribute(attribute: "see_also", value:
"https://getupdates.oracle.com/readme/120086-02");
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
 script_cwe_id(119);
 script_set_attribute(attribute:"plugin_publication_date", value: "2005/07/17");
 script_cvs_date("Date: 2019/10/25 13:36:22");
 script_set_attribute(attribute:"vuln_publication_date", value: "2005/02/25");
 script_end_attributes();

 script_summary(english: "Check for patch 120086-02");
 script_category(ACT_GATHER_INFO);
 script_copyright(english:"This script is Copyright (C) 2005-2019 Tenable Network Security, Inc.");
 family["english"] = "Solaris Local Security Checks";
 script_family(english:family["english"]);
 
 script_dependencies("ssh_get_info.nasl");
 script_require_keys("Host/Solaris/showrev");
 exit(0);
}



# Deprecated.
exit(0, "The associated patch is not currently a recommended security fix.");

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and patch checks in this plugin were 
# extracted from HP patch PHNE_34306. The text itself is
# copyright (C) Hewlett-Packard Development Company, L.P.
#

include("compat.inc");

if (description)
{
  script_id(21550);
  script_version("1.20");
  script_cvs_date("Date: 2018/08/10 18:07:07");

  script_cve_id("CVE-2005-0256");
  script_xref(name:"HP", value:"emr_na-c00637342");
  script_xref(name:"HP", value:"HPSBUX02110");
  script_xref(name:"HP", value:"SSRT061110");

  script_name(english:"HP-UX PHNE_34306 : HP-UX Running wu-ftpd Remote Denial of Service (DoS) (HPSBUX02110 SSRT061110 rev.1)");
  script_summary(english:"Checks for the patch in the swlist output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote HP-UX host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"s700_800 11.23 ftpd(1M) and ftp(1) patch : 

A potential vulnerability has been identified with HP-UX running
wu-ftpd where the vulnerability could be exploited by an authorized
remote user to create a Denial of Service (DoS)."
  );
  # http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00637342
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?2ce3bd6f"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Install patch PHNE_34306 or subsequent."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_cwe_id(119);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:hp:hp-ux");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/04/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/05/13");
  script_set_attribute(attribute:"vuln_publication_date", value:"2005/02/25");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2018 Tenable Network Security, Inc.");
  script_family(english:"HP-UX Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/HP-UX/version", "Host/HP-UX/swlist");

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/HP-UX/version")) audit(AUDIT_OS_NOT, "HP-UX");
if (!get_kb_item("Host/HP-UX/swlist")) audit(AUDIT_PACKAGE_LIST_MISSING);

if (!hpux_check_ctx(ctx:"11.23"))
{
  exit(0, "The host is not affected since PHNE_34306 applies to a different OS release.");
}

patches = make_list("PHNE_34306", "PHNE_34698", "PHNE_36065", "PHNE_36193", "PHNE_38578", "PHNE_38916", "PHNE_40380", "PHNE_41248", "PHNE_41581", "PHNE_42661");
foreach patch (patches)
{
  if (hpux_installed(app:patch))
  {
    exit(0, "The host is not affected because patch "+patch+" is installed.");
  }
}


flag = 0;
if (hpux_check_patch(app:"InternetSrvcs.INET-ENG-A-MAN", version:"B.11.23")) flag++;
if (hpux_check_patch(app:"InternetSrvcs.INETSVCS2-RUN", version:"B.11.23")) flag++;


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

• name	Robert L. Hollis
  organization	ThreatGuard, Inc.

• name	Todd Dolinsky
  organization	Opsware, Inc.

• name	Robert L. Hollis
  organization	ThreatGuard, Inc.

• name	Todd Dolinsky
  organization	Opsware, Inc.

• name	Robert L. Hollis
  organization	ThreatGuard, Inc.

• name	Todd Dolinsky
  organization	Opsware, Inc.