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RE: URGENT SECURITY ADVISORY FOR SSH SECURE SHELL 3.0.0

daemon@ATHENA.MIT.EDU (Sports)
Tue Jul 24 14:47:48 2001

Reply-To: <madboo@gwu.edu>
From: "Sports" <madboo@gwu.edu>
To: "'Thomas Roessler'" <roessler@does-not-exist.org>,
        "'Florian Weimer'" <Florian.Weimer@RUS.Uni-Stuttgart.DE>
Cc: <BUGTRAQ@securityfocus.com>, <customer.service@ssh.com>
Date: Mon, 23 Jul 2001 15:17:26 -0400
Message-ID: <001101c113ac$1c4b8ae0$1200a8c0@com>
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What about 2.9?

- -----Original Message-----
From: Thomas Roessler [mailto:roessler@does-not-exist.org]
Sent: Monday, July 23, 2001 11:42 AM
To: Florian Weimer
Cc: BUGTRAQ@SECURITYFOCUS.COM; customer.service@ssh.com
Subject: Re: URGENT SECURITY ADVISORY FOR SSH SECURE SHELL 3.0.0


On 2001-07-22 10:03:31 +0200, Florian Weimer wrote:

>A quick glance at the source code suggests that SSH 2.3.0 and 
>2.4.0 have the same problem.  Is this true?

I suppose we are talking about this section of ssh 2.4.0's
sshunixuser.c:

   940
   941	  /* Authentication is accepted if the encrypted passwords are
identical. */
   942	#ifdef HAVE_HPUX_TCB_AUTH
   943	  return strncmp(encrypted_password, correct_passwd,
   944	                 strlen(correct_passwd)) == 0;
   945	#else /* HAVE_HPUX_TCB_AUTH */
   946	  return strcmp(encrypted_password, correct_passwd) == 0;
   947	#endif /* HAVE_HPUX_TCB_AUTH */

If I read this correctly, it's certainly not a problem unless ssh is 
compiled with HAVE_HPUX_TCB_AUTH defined.  In that case, it may or 
may not be a problem.

- -- 
Thomas Roessler                        http://log.does-not-exist.org/

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