Vulnerabilities > CVE-2001-0609 - Off-by-one Error vulnerability in Infodrom Cfingerd

#%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-049. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(14886);
  script_version("1.18");
  script_cvs_date("Date: 2019/08/02 13:32:16");

  script_cve_id("CVE-2001-0609");
  script_bugtraq_id(2576);
  script_xref(name:"DSA", value:"049");

  script_name(english:"Debian DSA-049-1 : cfingerd");
  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:
"Megyer Laszlo report on Bugtraq that the cfingerd daemon as
 distributed with Debian GNU/Linux 2.2 was not careful in its logging
 code. By combining this with an off-by-one error in the code that
 copied the username from an ident response cfingerd could be
 exploited by a remote user. Since cfingerd does not drop its root
 privileges until after it has determined which user to finger an
 attacker can gain root privileges."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2001/dsa-049"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"This has been fixed in version 1.4.1-1.1, and we recommend that you
upgrade your cfingerd package immediately.

Note: this advisory was previously posted as DSA-048-1 by mistake."
  );
  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:F/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:cfingerd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:2.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2001/04/19");
  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:"2.2", prefix:"cfingerd", reference:"1.4.1-1.1")) 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(10652);
 script_version ("1.27");
 script_cve_id("CVE-1999-0243", "CVE-1999-0708", "CVE-2001-0609");
 script_bugtraq_id(2576, 651);

 script_name(english:"cfingerd < 1.4.4 Multiple Vulnerabilities");
 script_summary(english:"Checks the cfinger version");
 
 script_set_attribute(
   attribute:"synopsis",
   value:"The remote finger service has multiple vulnerabilities."
 );
 script_set_attribute( attribute:"description", value:
"The version of cfingerd running on the remote host has multiple
vulnerabilities, including :

  - A local buffer overflow in the GECOS field, which can be used to
    escalate privileges.
  - A format string vulnerability, triggered by a malformed ident
    reply.  This can be used to execute arbitrary code.
  - A local privilege escalation issue." );
 script_set_attribute(
   attribute:"see_also",
   value:"https://seclists.org/bugtraq/1999/Sep/326"
 );
 # https://web.archive.org/web/20010725012119/http://archives.neohapsis.com/archives/vendor/2001-q2/0009.html
 script_set_attribute(
   attribute:"see_also",
   value:"http://www.nessus.org/u?f2f0892c"
 );
 script_set_attribute(
   attribute:"solution", 
   value:"Upgrade to cfingerd version 1.4.4 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:POC/RL:OF/RC:C");
 script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
 script_set_attribute(attribute:"exploit_available", value:"true");
 script_set_attribute(attribute:"plugin_publication_date", value: "2001/04/16");
 script_set_attribute(attribute:"vuln_publication_date", value: "1996/09/19");
 script_cvs_date("Date: 2018/11/15 20:50:23");
 script_set_attribute(attribute:"plugin_type", value:"remote");
 script_end_attributes();

 script_category(ACT_GATHER_INFO);
 script_family(english:"Misc."); 
 script_copyright(english:"This script is Copyright (C) 2001-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
 script_dependencie("find_service1.nasl", 
 		     "cfinger_version.nasl");
 script_require_keys("cfingerd/version");
 exit(0);
}

#
# The script code starts here
#

port = get_kb_item("Services/finger");
if(!port)port = 79;

version = get_kb_item("cfingerd/version");
if(version)
{
 if(ereg(pattern:"[0-1]\.(([0-3]\.[0-9]*)|(4\.[0-3]))",
 	string:version))security_hole(port);
}