[#59462] [ruby-trunk - Bug #9342][Open] [PATCH] SizedQueue#clear does not notify waiting threads in Ruby 1.9.3 — "jsc (Justin Collins)" <redmine@...>

9 messages 2014/01/02

[#59466] [ruby-trunk - Bug #9343][Open] [PATCH] SizedQueue#max= wakes up waiters properly — "normalperson (Eric Wong)" <normalperson@...>

11 messages 2014/01/02

[#59498] [ruby-trunk - Bug #9352][Open] [BUG] rb_sys_fail_str(connect(2) for [fe80::1%lo0]:3000) - errno == 0 — "kain (Claudio Poli)" <claudio@...>

10 messages 2014/01/03

[#59516] [ruby-trunk - Bug #9356][Open] TCPSocket.new does not seem to handle INTR — "charliesome (Charlie Somerville)" <charliesome@...>

48 messages 2014/01/03

[#59538] [ruby-trunk - Feature #9362][Assigned] Minimize cache misshit to gain optimal speed — "shyouhei (Shyouhei Urabe)" <shyouhei@...>

33 messages 2014/01/03
[#59541] Re: [ruby-trunk - Feature #9362][Assigned] Minimize cache misshit to gain optimal speed — Eric Wong <normalperson@...> 2014/01/04

Hi, I noticed a trivial typo in array.c, and it fails building struct.c

[#59582] Re: [ruby-trunk - Feature #9362][Assigned] Minimize cache misshit to gain optimal speed — SASADA Koichi <ko1@...> 2014/01/06

Intersting challenge.

[#59583] [ruby-trunk - Bug #9367][Open] REXML::XmlDecl doesn't use user specified quotes — "bearmini (Takashi Oguma)" <bear.mini@...>

12 messages 2014/01/06

[#59642] [ruby-trunk - Bug #9384][Open] Segfault in ruby 2.1.0p0 — "cbliard (Christophe Bliard)" <christophe.bliard@...>

11 messages 2014/01/08

[#59791] About unmarshallable DRb objects life-time — Rodrigo Rosenfeld Rosas <rr.rosas@...>

A while ago I created a proof-of-concept that I intended to use in my

16 messages 2014/01/15
[#59794] Re: About unmarshallable DRb objects life-time — Eric Hodel <[email protected]> 2014/01/15

On 15 Jan 2014, at 11:58, Rodrigo Rosenfeld Rosas <[email protected]> =

[#59808] Re: About unmarshallable DRb objects life-time — Rodrigo Rosenfeld Rosas <rr.rosas@...> 2014/01/16

Em 15-01-2014 19:42, Eric Hodel escreveu:

[#59810] Re: About unmarshallable DRb objects life-time — Eric Hodel <[email protected]> 2014/01/16

On 16 Jan 2014, at 02:15, Rodrigo Rosenfeld Rosas <[email protected]> =

[#59826] Re: About unmarshallable DRb objects life-time — Rodrigo Rosenfeld Rosas <rr.rosas@...> 2014/01/17

Em 16-01-2014 19:43, Eric Hodel escreveu:

[#59832] Re: About unmarshallable DRb objects life-time — Eric Hodel <[email protected]> 2014/01/17

On 17 Jan 2014, at 04:22, Rodrigo Rosenfeld Rosas <[email protected]> =

[ruby-core:59971] [ruby-trunk - Bug #9424] ruby 1.9 & 2.x has insecure SSL/TLS client defaults

From: shyouhei@...
Date: 2014-01-22 09:05:03 UTC
List: ruby-core #59971
Issue #9424 has been updated by Shyouhei Urabe.


Charlie Somerville wrote:
> Shyouhei Urabe wrote:
> > Security is hard because NO ONE HELPS US BUT JUST COMPLAIN. Fuck off.
> 
> This is a completely unreasonable reply.

Sorry, I said too much.

> Several members of the community have already offered to assist in maintaining more secure defaults in the OpenSSL extension.
> 
> Perhaps we should accept these offers and work with people who are willing to help improve Ruby, rather than telling people to "fuck off" for arguing why ruby-core's decision on this issue may not be in the best interest of the majority of Ruby's users.

I have been reading this thread as a request for us to be perfect
to provide 128% secure product or just die.  If there are people
interested in being a super hero, please just kill us take the 
position. Oust us from being perfect.  I welcome them very much.

----------------------------------------
Bug #9424: ruby 1.9 & 2.x has insecure SSL/TLS client defaults 
https://bugs.ruby-lang.org/issues/9424#change-44501

* Author: Jeff Hodges
* Status: Assigned
* Priority: Normal
* Assignee: Martin Bosslet
* Category: ext/openssl
* Target version: current: 2.2.0
* ruby -v: ruby 2.1.0p0 (2013-12-25 revision 44422) [x86_64-darwin12]
* Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN, 2.1: UNKNOWN
----------------------------------------
Ruby 1.9, 2.0, and 2.1 use insecure defaults for SSL/TLS client connections. They have inherited or overridden configs that make the OpenSSL-controlled connections insecure. Note: both OpenSSL's and Ruby's defaults in all tested versions are currently insecure. Confirmation of the issues with Ruby's TLS client can be done with the code in [1].

Ruby is using TLS compression by default. This opens Ruby clients to the CRIME attack[2].

Ruby also uses a variety of insecure cipher suites. These cipher suites either use key sizes much smaller than the currently recommended size, making brute forcing a decryption easy, or do not check the veracity of the server's certificate making them susceptible to man-in-the-middle attacks[3][4].

Ruby also appears to allow SSLv2 connections by default. It does so by first trying to connect with a SSLv2 client hello with a higher SSL/TLS version inside of it which allows SSLv2 servers to work. SSLv2 was broken in the 1990s and is considered unsafe.

These issues expose Ruby users to attacks that have been known for many years, and are trivial to discover. These defaults are often build specific, and are not the same across platforms, but are consistently poor (the code in [1] can evaluate the build). A patch from a core developer on the security@ list is attached. However, the patch does not correct the suspect SSLv2 configuration. It is believed that Ruby 1.8 is also a concern, but, since it was obsoleted, it's not been investigated.

A report similar to this was sent to [email protected] four days ago. The Ruby core developers have been unable to patch these problems in a timely manner for it for what I and others believe are concerning reasons. This ticket is being made to allow engineers outside of the small group that are on security@ to protect themselves from these attacks.

[1] https://gist.github.com/cscotta/8302049
[2] https://www.howsmyssl.com/s/about.html#tls-compression
[3] https://www.howsmyssl.com/s/about.html#insecure-cipher-suites
[4] TLS_DHE_DSS_WITH_DES_CBC_SHA - small keys
TLS_DHE_RSA_WITH_DES_CBC_SHA - small keys
TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA - MITM
TLS_ECDH_anon_WITH_AES_128_CBC_SHA - MITM
TLS_ECDH_anon_WITH_AES_256_CBC_SHA - MITM
TLS_ECDH_anon_WITH_RC4_128_SHA - MITM
TLS_RSA_WITH_DES_CBC_SHA - small keys
TLS_SRP_SHA_WITH_3DES_EDE_CBC_SHA - MITM
TLS_SRP_SHA_WITH_AES_128_CBC_SHA - MITM
TLS_SRP_SHA_WITH_AES_256_CBC_SHA - MITM

---Files--------------------------------
ruby_ssl.patch (1.08 KB)


-- 
http://bugs.ruby-lang.org/

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