<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div>On Aug 19, 2013, at 9:56 , B.R. wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div class="gmail_default" style="font-size:small;color:rgb(51,51,153)">On Mon, Aug 19, 2013 at 12:41 AM, Igor Sysoev <span dir="ltr"><<a href="mailto:igor@sysoev.ru" target="_blank">igor@sysoev.ru</a>></span> wrote:</div><div class="gmail_extra"><div class="gmail_quote">
<blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-style: solid; border-left-color: rgb(204, 204, 204); padding-left: 1ex; position: static; z-index: auto; "><br>
These are different vulnerabilities: SSL compression is subject to<br>
CRIME vulnerability while HTTP/SSL compression is subject to BREACH<br>
vulnerability.<br></blockquote><div><br><div class="gmail_default" style="font-size:small;color:rgb(51,51,153);display:inline">Incorrect.<br><br>CRIME attacks a vulnerability in the implementation of SSLv3 and TLS1.0 using CBC flaw: the IV was guessable. Hte other vulnerability was a facilitator to inject automatically arbitrary content (so attackers could inject what they wish to make their trail-and-error attack).<br>
CRIME conclusion is: use TLS v1.1 or later (not greater than v1.2 for now).<br></div></div></div></div></div></blockquote><div><br></div>You probably mix up it with BEAST.</div><div><br><blockquote type="cite"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div><div class="gmail_default" style="font-size:small;color:rgb(51,51,153);display:inline">BREACH attacks the fact that compressed HTTP content encrypted with SSL makes it easy to guess a known existing header field from the request that is repeated in the (encrypted) answer looking at the size of the body.<br>
BEAST conclusion is: don't use HTTP compression underneath SSL encryption.<br></div></div></div></div></div></blockquote></div><br><div>
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