Vulnerabilities > CVE-2003-0156 - Unspecified vulnerability in Cross Referencer LXR

#%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-264. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(15101);
  script_version("1.21");
  script_cvs_date("Date: 2019/08/02 13:32:17");

  script_cve_id("CVE-2003-0156");
  script_xref(name:"DSA", value:"264");

  script_name(english:"Debian DSA-264-1 : lxr - missing filename sanitizing");
  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:
"Upstream developers of lxr, a general hypertext cross-referencing
tool, have been alerted of a vulnerability that allows a remote
attacker to read arbitrary files on the host system as user www-data.
This could disclose local files that were not meant to be shared with
the public."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2003/dsa-264"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the lxr package.

For the stable distribution (woody) this problem has been fixed in
version 0.3-3.

The old stable distribution (potato) is not affected since it does not
contain an lxr package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2003/03/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/29");
  script_set_attribute(attribute:"vuln_publication_date", value:"2003/03/10");
  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:"lxr", reference:"0.3-3")) 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");

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


include("compat.inc");


if(description)
{
 script_id(11368);
 script_cve_id("CVE-2003-0156");
 script_bugtraq_id(7062);
 
 script_version ("1.23");
 
 script_name(english:"Cross-Referencing Linux (lxr) CGI v Parameter Traversal Arbitrary File Access");
 script_summary(english:"Checks for the presence of /cgi-bin/source");

 script_set_attribute(attribute:"synopsis", value:
"A web application running on the remote host has a directory
traversal vulnerability." );
 script_set_attribute(attribute:"description", value:
"Cross-Referencing Linux appaers to be installed on the remote host.
There is a directory traversal vulnerability in the 'v' parameter
of the 'source' CGI.  A remote attacker could exploit this to read
arbitrary files on the system. " );
 script_set_attribute(
   attribute:"see_also",
   value:"https://seclists.org/bugtraq/2003/Mar/141"
 );
 script_set_attribute(
   attribute:"solution", 
   value:"Remove this CGI from the system."
 );
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
 script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
 script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
 script_set_attribute(attribute:"exploit_available", value:"true");
 script_set_attribute(attribute:"plugin_publication_date", value: "2003/03/12");
 script_set_attribute(attribute:"vuln_publication_date", value: "2003/03/10");
 script_cvs_date("Date: 2018/11/15 20:50:16");
 script_set_attribute(attribute:"plugin_type", value:"remote");
 script_end_attributes();

 script_category(ACT_GATHER_INFO);
 script_family(english:"CGI abuses");
 
 script_copyright(english:"This script is Copyright (C) 2003-2018 Tenable Network Security, Inc.");

 script_dependencie("http_version.nasl", "find_service1.nasl", "no404.nasl");
 script_require_ports("Services/www", 80);
 script_exclude_keys("Settings/disable_cgi_scanning");

 exit(0);
}

#
# The script code starts here
#

include("global_settings.inc");
include("misc_func.inc");
include("http.inc");


port = get_http_port(default:80);

foreach d (make_list(cgi_dirs()))
{
 url = string(d, "/source?v=../../../../../../../../../../etc/passwd%00");
 res = http_send_recv3(method:"GET", item:url, port:port);
 if(isnull(res)) exit(0);
 if(egrep(pattern:"root:.*:0:[01]:", string:res[2])){
 	security_warning(port);
	exit(0);
	}	
}