ID CVE-2008-3195
Summary Directory traversal vulnerability in bin/configure in TWiki before 4.2.3, when a certain step in the installation guide is skipped, allows remote attackers to read arbitrary files via a query string containing a .. (dot dot) in the image variable, and execute arbitrary files via unspecified vectors.
Vulnerable Configurations
  • cpe:2.3:a:twiki:twiki:4.1.2
  • cpe:2.3:a:twiki:twiki:4.2.1
  • cpe:2.3:a:twiki:twiki:4.1.1
  • cpe:2.3:a:twiki:twiki:4.2.0
  • cpe:2.3:a:twiki:twiki:4.1.0
  • cpe:2.3:a:twiki:twiki:4.0.5
  • cpe:2.3:a:twiki:twiki:4.0.4
  • cpe:2.3:a:twiki:twiki:4.0.3
  • cpe:2.3:a:twiki:twiki:4.0.2
  • cpe:2.3:a:twiki:twiki:4.0.1
  • cpe:2.3:a:twiki:twiki:4.0.0
  • cpe:2.3:a:twiki:twiki:4.0
  • cpe:2.3:a:twiki:twiki:4.2.2
Base: 6.8 (as of 18-09-2008 - 12:41)
  • 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.
  • Using Escaped Slashes in Alternate Encoding
    This attack targets the use of the backslash in alternate encoding. An attacker can provide a backslash as a leading character and causes a parser to believe that the next character is special. This is called an escape. By using that trick, the attacker tries to exploit alternate ways to encode the same character which leads to filter problems and opens avenues to attack.
  • Using Slashes in Alternate Encoding
    This attack targets the encoding of the Slash characters. An attacker would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the attacker many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.
exploit-db via4
  • description TWiki 4.2.0 (configure) Remote File Disclosure Vulnerability. CVE-2008-3195,CVE-2008-4112. Webapps exploit for cgi platform
    file exploits/cgi/webapps/6269.txt
    id EDB-ID:6269
    last seen 2016-02-01
    modified 2008-08-19
    platform cgi
    published 2008-08-19
    reporter Th1nk3r
    title TWiki 4.2.0 configure Remote File Disclosure Vulnerability
    type webapps
  • description TWiki <= 4.2.2 (action) Remote Code Execution Vulnerability. CVE-2008-3195,CVE-2008-4112. Webapps exploit for cgi platform
    id EDB-ID:6509
    last seen 2016-02-01
    modified 2008-09-21
    published 2008-09-21
    reporter webDEViL
    title TWiki <= 4.2.2 action Remote Code Execution Vulnerability
nessus via4
  • NASL family FreeBSD Local Security Checks
    NASL id FREEBSD_PKG_9227DCAF827F11DD9CD70050568452AC.NASL
    description Th1nk3r reports : The version of TWiki installed on the remote host allows access to the 'configure' script and fails to sanitize the 'image' parameter of that script of directory traversal sequences before returning the file contents when the 'action' parameter is set to 'image'. An unauthenticated attacker can leverage this issue to view arbitrary files on the remote host subject to the privileges of the web server user id. .
    last seen 2019-02-21
    modified 2018-12-19
    plugin id 34206
    published 2008-09-15
    reporter Tenable
    title FreeBSD : twiki -- Arbitrary code execution in session files (9227dcaf-827f-11dd-9cd7-0050568452ac)
  • NASL family Debian Local Security Checks
    description It was discovered that twiki, a web-based collaboration platform, didn't properly sanitize the image parameter in its configuration script. This could allow remote users to execute arbitrary commands upon the system, or read any files which were readable by the webserver user.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 34246
    published 2008-09-22
    reporter Tenable
    title Debian DSA-1639-1 : twiki - command execution
  • NASL family CGI abuses
    description The version of TWiki running on the remote host allows access to the 'configure' script, and fails to sanitize the 'image' parameter of that script. When the 'action' parameter is set to 'image', an unauthenticated attacker can exploit this issue to execute arbitrary code or to view arbitrary files on the remote host subject to the privileges of the web server user id. Note that the TWiki Installation Guide says the 'configure' script should never be left open to the public.
    last seen 2019-02-21
    modified 2018-08-15
    plugin id 34031
    published 2008-08-23
    reporter Tenable
    title TWiki bin/configure 'image' Parameter Traversal Arbitrary File Access/Execution
packetstorm via4
data source
last seen 2016-12-05
published 2008-09-22
reporter webDEViL
title twiki-exec.txt
refmap via4
cert-vn VU#362012
exploit-db 6269
  • 31849
  • 31964
sreason 4265
vupen ADV-2008-2586
  • twiki-configure-directory-traversal(45182)
  • twiki-configure-image-command-execution(45183)
Last major update 07-03-2011 - 22:10
Published 18-09-2008 - 11:04
Last modified 28-09-2017 - 21:31
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