Date: Fri, 15 Nov 2013 11:18:33 -0800 From: Chris Palmer <snackypants@...il.com> To: oss-security@...ts.openwall.com Subject: Re: cryptographic primitive choices [was: Re: Microsoft Warns Customers Away From RC4 and SHA-1] On Thu, Nov 14, 2013 at 10:58 PM, Kurt Seifried <kseifried@...hat.com> wrote: > Compatibility, for example HTTPS, you can disable a lot but if you > only allowed one cipher chances are a good chunk of clients wouldn't > be able to connect. There's a LOT of software out there, some open > source, some commercial, some written in house, it all uses encryption > and signing (usually wrongly, sigh) and a lot of it cannot or will not > be updated any time soon, if at all. Think of all the devices that act > as a web client and will never have TLS 1.2 support (e.g. "smart" TVs) > for example. Would I prefer the world to ditch SSL, TLS 1.0 and 1.1 > and move to TLS 1.2 entirely? Of course. Is it going to happen? Not > for a loooong time. > > Think of all the things that currently use (often older versions of) > OpenSSL/PolarSSL/GnuTLS/etc and will never get updated... I posit that there is a strong correlation between un-updated, un-updatable software that did not ship with (for example) support for modern cipher suites and protocols, and software that should be recalled for a variety of reasons. Random example: https://securityledger.com/2013/08/samsung-smart-tv-like-a-web-app-riddled-with-vulnerabilities/ Let's unpack your use of the passive voice: Who, exactly, is choosing not to update the OpenSSL they ship? Why do we forgive that? To an extent, even security engineers are acting as enablers, allowing obsolete software/protocols/cipher suites to live far longer than they should have. "LTS", "ESR", and not EOL'ing Windows XP 4+ years ago is a significant part of the problem.
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