CVSTrac chdir() chroot jail escape

2005-11-03T00:00:00
ID OPENVAS:14288
Type openvas
Reporter This script is Copyright (C) 2004 David Maciejak
Modified 2017-12-07T00:00:00

Description

The remote host seems to be running cvstrac, a web-based bug and patch-set tracking system for CVS.

This version contains a flaw related to the chdir() function that may allow an attacker to escape the chroot jail. An attacker, exploiting this flaw, would be able to access files outside of the web root.

* OpenVAS has determined the vulnerability exists on the target simply by looking at the version number(s) of CVSTrac ** installed there.

                                        
                                            # OpenVAS Vulnerability Test
# $Id: cvstrac_jail_escape.nasl 8023 2017-12-07 08:36:26Z teissa $
# Description: CVSTrac chdir() chroot jail escape
#
# Authors:
# David Maciejak <david dot maciejak at kyxar dot fr>
# based on work from (C) Tenable Network Security
#
# Copyright:
# Copyright (C) 2004 David Maciejak
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2,
# as published by the Free Software Foundation
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#

tag_summary = "The remote host seems to be running cvstrac, 
a web-based bug and patch-set tracking system for CVS.

This version contains a flaw related to the chdir() function 
that may allow an attacker to escape the chroot jail.  An
attacker, exploiting this flaw, would be able to access files
outside of the web root.

***** OpenVAS has determined the vulnerability exists on the target
***** simply by looking at the version number(s) of CVSTrac
***** installed there.";

tag_solution = "Update to version 1.1.4 or disable this CGI suite";

if(description)
{
 script_id(14288);
 script_version("$Revision: 8023 $");
 script_tag(name:"last_modification", value:"$Date: 2017-12-07 09:36:26 +0100 (Thu, 07 Dec 2017) $");
 script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
 script_tag(name:"cvss_base", value:"7.1");
 script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:N/A:N");
 script_xref(name:"OSVDB", value:"8643");
 name = "CVSTrac chdir() chroot jail escape";

 script_name(name);
 


 
 
 script_category(ACT_GATHER_INFO);
  script_tag(name:"qod_type", value:"remote_banner");
 
 
 script_copyright("This script is Copyright (C) 2004 David Maciejak");
 family = "Web application abuses";
 script_family(family);
 script_dependencies("cvstrac_detect.nasl");
 script_require_ports("Services/www", 80);
 script_tag(name : "solution" , value : tag_solution);
 script_tag(name : "summary" , value : tag_summary);
 exit(0);
}

#
# The script code starts here
#

include("http_func.inc");

port = get_http_port(default:80);
kb = get_kb_item("www/" + port + "/cvstrac" );
if ( ! kb ) exit(0);
stuff = eregmatch(pattern:"(.*) under (.*)", string:kb );
version = stuff[1]; 
if(ereg(pattern:"^(0\.|1\.(0|1\.[0-3]([^0-9]|$)))", string:version))
	security_message(port);