Difference between revisions of "Absolute Path Traversal"

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#REDIRECT [[Path Traversal]]
[[Category:Deployment]]
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[[Category:Attack]]
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Last revision (mm/dd/yy): '''{{REVISIONMONTH}}/{{REVISIONDAY}}/{{REVISIONYEAR}}'''
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==Description==
 
If a product expects a filename as input it is possible that it can construct an absolute path such as "/rootdir/subdir," which is then processed by the operating system to access a file or resource that is outside of a restricted path that was intended by the developer.
 
If a product expects a filename as input it is possible that it can construct an absolute path such as "/rootdir/subdir," which is then processed by the operating system to access a file or resource that is outside of a restricted path that was intended by the developer.
  
 
This is similar to path traversal but uses only "/" and not ".." to gain access.
 
This is similar to path traversal but uses only "/" and not ".." to gain access.
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More detailed information can be found on [[Path_Traversal]]
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==Risk Factors==
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==Examples==
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===How does the attack work?===
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:The following URLs maybe are vulnerable to this attack:
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<nowiki>http://testsite.com/get.php?f=list</nowiki>
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<nowiki>http://testsite.com/get.cgi?f=2</nowiki>
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<nowiki>http://testsite.com/get.asp?f=test</nowiki>
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:A simple way to execute this attack is like this:
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<nowiki>http://testsite.com/get.php?f=/var/www/html/get.php</nowiki>
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<nowiki>http://testsite.com/get.cgi?f=/var/www/html/admin/get.inc</nowiki>
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<nowiki>http://testsite.com/get.asp?f=/etc/passwd</nowiki>
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:When the web server returns information about errors in a web application, it is much easier for the attacker to guess the correct locations (e.g. path to the file with a source code, which then may be displayed).
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==Related [[Threat Agents]]==
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==Related [[Attacks]]==
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* [[Path Manipulation]]
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* [[Path Traversal]]
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* [[Resource Injection]]
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==Related [[Vulnerabilities]]==
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* [[:Category:Input Validation Vulnerability]]
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==Related [[Controls]]==
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* [[:Category:Input Validation]]
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==References==

Latest revision as of 08:13, 12 February 2009


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#REDIRECT Path Traversal

Last revision (mm/dd/yy): 02/12/2009

Contents

Description

If a product expects a filename as input it is possible that it can construct an absolute path such as "/rootdir/subdir," which is then processed by the operating system to access a file or resource that is outside of a restricted path that was intended by the developer.

This is similar to path traversal but uses only "/" and not ".." to gain access. More detailed information can be found on Path_Traversal

Risk Factors

Examples

How does the attack work?

The following URLs maybe are vulnerable to this attack:
http://testsite.com/get.php?f=list
http://testsite.com/get.cgi?f=2
http://testsite.com/get.asp?f=test
A simple way to execute this attack is like this:
http://testsite.com/get.php?f=/var/www/html/get.php
http://testsite.com/get.cgi?f=/var/www/html/admin/get.inc
http://testsite.com/get.asp?f=/etc/passwd
When the web server returns information about errors in a web application, it is much easier for the attacker to guess the correct locations (e.g. path to the file with a source code, which then may be displayed).

Related Threat Agents

Related Attacks

Related Vulnerabilities


Related Controls

References