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Category:   Application (Directory)  >   IBM Tivoli Directory Server Vendors:   IBM
IBM Tivoli Directory Server SSL 3.0 Protocol Downgrade Flaw Lets Remote Users Decrypt SSL Traffic
SecurityTracker Alert ID:  1031120
SecurityTracker URL:  http://securitytracker.com/id/1031120
CVE Reference:   CVE-2014-3566   (Links to External Site)
Date:  Oct 28 2014
Impact:   Disclosure of system information, Disclosure of user information
Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 6.0, 6.1, 6.2, 6.3
Description:   A vulnerability was reported in IBM Tivoli Directory Server. A remote user can decrypt SSL sessions in certain cases.

A remote user can with the ability to conduct a man-in-the-middle attack can force a client to negotiate a downgrade to SSLv3 instead of a TLS v1.x protocol and then conduct a BEAST-style of attack to decrypt portions of the session.

This protocol vulnerability is referred to as the POODLE ("Padding Oracle On Downgraded Legacy Encryption") vulnerability.

This is a flaw in the protocol rather than in the SSL implementation.

The original advisory is available at:

https://www.openssl.org/~bodo/ssl-poodle.pdf

Bodo Moller, Thai Duong, and Krzysztof Kotowicz reported this vulnerability.

Impact:   A remote user with the ability to conduct a man-in-the-middle attack can decrypt SSL sessions.
Solution:   The vendor has described a workaround in their advisory.

The vendor's advisories are available at:

http://www-01.ibm.com/support/docview.wss?uid=isg3T1021431
http://www-01.ibm.com/support/docview.wss?uid=swg21687611

Vendor URL:  www-01.ibm.com/support/docview.wss?uid=isg3T1021431 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (AIX), UNIX (HP/UX), UNIX (Solaris - SunOS), Windows (2003), Windows (2008)

Message History:   None.


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