Re: LogJam exploit can force TLS down to 512 bytes, does it affect us? ?

2015-05-21 Thread Royce Williams
On Thu, May 21, 2015 at 6:21 AM, Mark Felder wrote: > > > On Wed, May 20, 2015, at 17:48, Xin Li wrote: > ]> > > Well, currently OpenSSL do accept weak DH so _arguably_ it does affect > > FreeBSD, and it's likely to break existing applications if we enforce > > such restrictions (namely, Java 6).

Re: LogJam exploit can force TLS down to 512 bytes, does it affect us? ?

2015-05-21 Thread Mark Felder
On Wed, May 20, 2015, at 17:48, Xin Li wrote: ]> > Well, currently OpenSSL do accept weak DH so _arguably_ it does affect > FreeBSD, and it's likely to break existing applications if we enforce > such restrictions (namely, Java 6). > AFAIK, Java doesn't support >1024 DH key until Java 8. _

Re: LogJam exploit can force TLS down to 512 bytes, does it affect us? ?

2015-05-21 Thread Matthew Seaman
On 05/20/15 23:48, Xin Li wrote: > The document at https://weakdh.org/sysadmin.html gives additional > information for individual daemons, including Apache (mod_ssl), nginx, > lighttpd, Tomcat, postfix, sendmail, dovecot and HAProxy. The part of that https://weakdh.org/ site that concerns me most

Re: LogJam exploit can force TLS down to 512 bytes, does it affect us? ?

2015-05-21 Thread Winfried Neessen
Hi, > The document at https://weakdh.org/sysadmin.html gives additional > information for individual daemons, including Apache (mod_ssl), nginx, > lighttpd, Tomcat, postfix, sendmail, dovecot and HAProxy. > Unfortunately the documentation does only offer guidance for Apache 2.4. As Apache 2.2 do

Re: LogJam exploit can force TLS down to 512 bytes, does it affect us? ?

2015-05-20 Thread Julian H. Stacey
Xin Li wrote: > On 05/20/15 14:40, Julian H. Stacey wrote: > > Hi secur...@freebsd.org > > Please note that secur...@freebsd.org = sect...@freebsd.org. Since > this is posted to ports@ which is public, I'm assuming it's not > intended to be in private. Yes, correct, thanks Xin Li, (Sorry I fo

Re: LogJam exploit can force TLS down to 512 bytes, does it affect us? ?

2015-05-20 Thread Xin Li
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 On 05/20/15 14:40, Julian H. Stacey wrote: > Hi secur...@freebsd.org Please note that secur...@freebsd.org = sect...@freebsd.org. Since this is posted to ports@ which is public, I'm assuming it's not intended to be in private. > (& bcc'd a couple

LogJam exploit can force TLS down to 512 bytes, does it affect us? ?

2015-05-20 Thread Julian H. Stacey
Hi secur...@freebsd.org (& bcc'd a couple of friends) Refa: http://www.bbc.com/news/technology-32814309 (posted 5 hours before Wed May 20 23:01:22 CEST 2015) http://www.theregister.co.uk/2015/05/20/logjam_impact/ 20 May 2015 at 16:29 Does it affect FreeBSD ? If so, I guess securi