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Category:   OS (Microsoft)  >   Windows TCP/IP Stack Vendors:   Microsoft
Microsoft Windows SSL/TLS Protocol Flaw Lets Remote Users Decryption Sessions
SecurityTracker Alert ID:  1026103
SecurityTracker URL:  http://securitytracker.com/id/1026103
CVE Reference:   CVE-2011-3389   (Links to External Site)
Date:  Sep 27 2011
Impact:   Disclosure of user information, Modification of user information
Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): XP SP3, 2003 SP2, Vista SP2, 2008 SP2, 7 SP1, 2008 R2 SP1; and prior service packs
Description:   A vulnerability was reported in Windows SSL/TLS stack. A remote user can decrypt SSL/TLS sessions in certain cases.

A remote user with the ability to conduct a man-in-the-middle attack on an HTTPS connection can decrypt SSL/TLS sessions.

The vulnerability resides in the SSL 3.0 and TLS 1.0 specifications when using a Cipher-Block Chaining (CBC) based cryptographic algorithm.

The TLS 1.1 and 1.2 protocols are not affected.

Thai Duong and Juliano Rizzo reported this vulnerability.

Impact:   A remote user with the ability to conduct a man-in-the-middle attack can decrypt SSL/TLS sessions.
Solution:   No solution was available at the time of this entry.

The vendor is working on a fix.

The vendor's advisory is available at:

http://technet.microsoft.com/en-us/security/advisory/2588513

Vendor URL:  technet.microsoft.com/en-us/security/advisory/2588513 (Links to External Site)
Cause:   Access control error
Underlying OS:  

Message History:   None.


 Source Message Contents

Date:  Mon, 26 Sep 2011 23:54:26 +0000
Subject:  SSL / TLS


CVE-2011-3389

SSL 3.0 and TLS 1.0 CBC
 
 


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