Re: [Haifux] The Heartbeat vulnerability in OpenSSL (and hence ssh/https)

2014-04-27 Thread Tzafrir Cohen
On Sun, Apr 27, 2014 at 12:17:45PM +0300, Nadav Har'El wrote:
 On Sun, Apr 27, 2014, Tzafrir Cohen wrote about Re: [Haifux] The Heartbeat 
 vulnerability in OpenSSL (and hence ssh/https):
  On Sat, Apr 26, 2014 at 02:20:17PM +0300, Sorana Fraier wrote:
   There is now a fork by openbsd people for openssl. It's called libressl.
   
   http://www.libressl.org/
   
   They crave for more people to help.
  
  Not really. If they wanted more people they wouldn't use the OpenBSD
  CVS.
 
 Not everyone has been drinking from the distributed version-control
 system coolaid. I agree that CVS should be dropped for Subversion which
 is more-or-less a superset of CVS, but let's not judge them harshly for
 not using Git.

I don't judge them for not using git. I judge them for using CVS.

In fact they clearly state on their page that they're not looking for
code contributions as the code is not ready yet.

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Re: [Haifux] The Heartbeat vulnerability in OpenSSL (and hence ssh/https)

2014-04-26 Thread ik
On Sat, Apr 26, 2014 at 2:20 PM, Sorana Fraier sf10...@gmail.com wrote:

 There is now a fork by openbsd people for openssl. It's called libressl.

 http://www.libressl.org/


Why a fork ?!
There are bugs, some of them are set to be security risks, but you can
never avoid bugs.
And when C and C++ are your main programming language, the number of bugs
raises, due to so many reasons such as:
1. memory management (with all of it's issues)
2. In-proper data input
3. hard code to read and understand

etc...

I do think that the heartbleed issue was anything else but a bug, and
rewriting code will not make things less vulnerable for the next big bug
that might exists.

So why do they fork it ?!



 They crave for more people to help.


 On Tue, Apr 15, 2014 at 5:57 AM, Michael Vasiliev li...@infoscav.netwrote:

  If any of you guys and gals think this isn's serious, think twice. The
 CloudFlare SSL Heartbleed challenge site's SSL key was stolen within hours
 of being announced. There is a wave of security compromises all over the
 world and sane CAs are offering free renewals of SSL certificates.


 On 04/11/2014 08:35 AM, Eli Billauer wrote:

 Hi all,

 I suppose that the security freaks already know about this, and still,
 this seems important enough for an alert.

 In a nutshell, a bug in the mechanism that allows keepalive messages to
 be sent to maintain an SSL link, also allows, accidentally, a remote
 attacker to read a segment of up to 64 kBytes from the server's memory.
 It's doesn't give access to any chunk of 64 kBytes, but it's a segment
 which is likely to be dirty with data that belongs to the process
 running openSSL. So there's a chance that data related to private keys
 and passwords is revealed this way.

 See http://en.wikipedia.org/wiki/Heartbleed

 I haven't found any tool checking a local SSH server, say as source code
 in C. I suppose it's being avoided for the sake of not supplying the
 almost-finished attack to script kiddies.

 Hag Sameah,

 Eli




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Re: [Haifux] The Heartbeat vulnerability in OpenSSL (and hence ssh/https)

2014-04-26 Thread Tzafrir Cohen
On Sat, Apr 26, 2014 at 02:20:17PM +0300, Sorana Fraier wrote:
 There is now a fork by openbsd people for openssl. It's called libressl.
 
 http://www.libressl.org/
 
 They crave for more people to help.

Not really. If they wanted more people they wouldn't use the OpenBSD
CVS.

This is the only example I can think of of a project switching from Git
to CVS. Though we had OpenOffice switching from Mercurial to Subversion
when moving to Apache.

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Re: [Haifux] The Heartbeat vulnerability in OpenSSL (and hence ssh/https)

2014-04-14 Thread Michael Vasiliev

  
  
If any of you guys and gals think this
  isn's serious, think twice. The CloudFlare SSL Heartbleed
  challenge site's SSL key was stolen within hours of being
  announced. There is a wave of security compromises all over the
  world and sane CAs are offering free renewals of SSL certificates.
  
  On 04/11/2014 08:35 AM, Eli Billauer wrote:


  Hi all,

I suppose that the security freaks already know about this, and still, 
this seems important enough for an alert.

In a nutshell, a bug in the mechanism that allows keepalive messages to 
be sent to maintain an SSL link, also allows, accidentally, a remote 
attacker to read a segment of up to 64 kBytes from the server's memory. 
It's doesn't give access to any chunk of 64 kBytes, but it's a segment 
which is likely to be dirty with data that belongs to the process 
running openSSL. So there's a chance that data related to private keys 
and passwords is revealed this way.

See http://en.wikipedia.org/wiki/Heartbleed

I haven't found any tool checking a local SSH server, say as source code 
in C. I suppose it's being avoided for the sake of not supplying the 
almost-finished attack to script kiddies.

Hag Sameah,

Eli




  

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Re: [Haifux] The Heartbeat vulnerability in OpenSSL (and hence ssh/https)

2014-04-11 Thread Tzafrir Cohen
On Fri, Apr 11, 2014 at 08:35:00AM +0300, Eli Billauer wrote:
 Hi all,
 
 I suppose that the security freaks already know about this, and still, 
 this seems important enough for an alert.
 
 In a nutshell, a bug in the mechanism that allows keepalive messages to 
 be sent to maintain an SSL link, also allows, accidentally, a remote 
 attacker to read a segment of up to 64 kBytes from the server's memory. 
 It's doesn't give access to any chunk of 64 kBytes, but it's a segment 
 which is likely to be dirty with data that belongs to the process 
 running openSSL. So there's a chance that data related to private keys 
 and passwords is revealed this way.
 
 See http://en.wikipedia.org/wiki/Heartbleed
 
 I haven't found any tool checking a local SSH server, say as source code 
 in C. I suppose it's being avoided for the sake of not supplying the 
 almost-finished attack to script kiddies.

SSH is safe from this - it does not use this mechanism. Its protocol is
different.Likewise is GPG is safe from this bug as it is built with
GnuTLS.

-- 
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tzaf...@cohens.org.il ||  best
tzaf...@debian.org|| friend
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[Haifux] The Heartbeat vulnerability in OpenSSL (and hence ssh/https)

2014-04-10 Thread Eli Billauer
Hi all,

I suppose that the security freaks already know about this, and still, 
this seems important enough for an alert.

In a nutshell, a bug in the mechanism that allows keepalive messages to 
be sent to maintain an SSL link, also allows, accidentally, a remote 
attacker to read a segment of up to 64 kBytes from the server's memory. 
It's doesn't give access to any chunk of 64 kBytes, but it's a segment 
which is likely to be dirty with data that belongs to the process 
running openSSL. So there's a chance that data related to private keys 
and passwords is revealed this way.

See http://en.wikipedia.org/wiki/Heartbleed

I haven't found any tool checking a local SSH server, say as source code 
in C. I suppose it's being avoided for the sake of not supplying the 
almost-finished attack to script kiddies.

Hag Sameah,

Eli

-- 
Web: http://www.billauer.co.il

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