[SECURITY] [DLA 81-1] openssl security update

Package : openssl
Version : 0.9.8o-4squeeze18
CVE ID : CVE-2014-3567 CVE-2014-3568 CVE-2014-3569

Several vulnerabilities have been found in OpenSSL.

CVE-2014-3566 ("POODLE")

A flaw was found in the way SSL 3.0 handled padding bytes when
decrypting messages encrypted using block ciphers in cipher block
chaining (CBC) mode. This flaw allows a man-in-the-middle (MITM)
attacker to decrypt a selected byte of a cipher text in as few as 256
tries if they are able to force a victim application to repeatedly
send the same data over newly created SSL 3.0 connections.  

This update adds support for Fallback SCSV to mitigate this issue.
This does not fix the issue.  The proper way to fix this is to
disable SSL 3.0.

CVE-2014-3567

A memory leak flaw was found in the way an OpenSSL handled failed
session ticket integrity checks. A remote attacker could exhaust all
available memory of an SSL/TLS or DTLS server by sending a large number
of invalid session tickets to that server.

CVE-2014-3568

When OpenSSL is configured with "no-ssl3" as a build option, servers
could accept and complete a SSL 3.0 handshake, and clients could be
configured to send them.

Note that the package is Debian is not build with this option.

CVE-2014-3569

When openssl is build with the no-ssl3 option and a SSL v3 Client
Hello is received the ssl method would be set to NULL which could
later result in a NULL pointer dereference.

Note that the package is Debian is not build with this option.

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