Commit graph

75 commits

Author SHA1 Message Date
Kurt Roeckx
29cce50897 Remove LOW from the default
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
2016-03-07 18:54:57 +01:00
Viktor Dukhovni
9dfd2be8a1 Disable SSLv2 default build, default negotiation and weak ciphers.
SSLv2 is by default disabled at build-time.  Builds that are not
configured with "enable-ssl2" will not support SSLv2.  Even if
"enable-ssl2" is used, users who want to negotiate SSLv2 via the
version-flexible SSLv23_method() will need to explicitly call either
of:

    SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
or
    SSL_clear_options(ssl, SSL_OP_NO_SSLv2);

as appropriate.  Even if either of those is used, or the application
explicitly uses the version-specific SSLv2_method() or its client
or server variants, SSLv2 ciphers vulnerable to exhaustive search
key recovery have been removed.  Specifically, the SSLv2 40-bit
EXPORT ciphers, and SSLv2 56-bit DES are no longer available.

Mitigation for CVE-2016-0800

Reviewed-by: Emilia Käsper <emilia@openssl.org>
2016-03-01 11:20:10 +00:00
Emilia Kasper
86f8fb0e34 Fix reachable assert in SSLv2 servers.
This assert is reachable for servers that support SSLv2 and export ciphers.
Therefore, such servers can be DoSed by sending a specially crafted
SSLv2 CLIENT-MASTER-KEY.

Also fix s2_srvr.c to error out early if the key lengths are malformed.
These lengths are sent unencrypted, so this does not introduce an oracle.

CVE-2015-0293

This issue was discovered by Sean Burford (Google) and Emilia Käsper of
the OpenSSL development team.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-03-19 12:58:35 +00:00
Matt Caswell
ae5c8664e5 Run util/openssl-format-source -v -c .
Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-01-22 09:31:38 +00:00
Matt Caswell
335d4d06a7 Tweaks for comments due to indent's inability to handle them
Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-01-22 09:28:55 +00:00
Bodo Moeller
a46c705214 Support TLS_FALLBACK_SCSV.
Reviewed-by: Rich Salz <rsalz@openssl.org>
2014-10-15 04:04:55 +02:00
Dr. Stephen Henson
05b2210476 Update strength_bits for 3DES.
Fix strength_bits to 112 for 3DES.
(cherry picked from commit 837c203719205ab19b5609b2df7151be8df05687)
2014-06-09 12:09:51 +01:00
Dr. Stephen Henson
1520e6c084 Add ctrl and utility functions to retrieve raw cipher list sent by client in
client hello message. Previously this could only be retrieved on an initial
connection and it was impossible to determine the cipher IDs of any uknown
ciphersuites.
(backport from HEAD)
2012-12-26 16:25:06 +00:00
Dr. Stephen Henson
2dd5ca1fbc Make no-ssl2 work including on Win32 builds. 2009-04-04 17:57:34 +00:00
Ben Laurie
0eab41fb78 If we're going to return errors (no matter how stupid), then we should
test for them!
2008-12-29 16:11:58 +00:00
Dr. Stephen Henson
e19106f5fb Create function of the form OBJ_bsearch_xxx() in bsearch typesafe macros
with the appropriate parameters which calls OBJ_bsearch(). A compiler will
typically inline this.

This avoids the need for cmp_xxx variables and fixes unchecked const issues
with CHECKED_PTR_OF()
2008-10-22 15:43:01 +00:00
Dr. Stephen Henson
606f6c477a Fix a shed load or warnings:
Duplicate const.
Use of ; outside function.
2008-10-20 15:12:00 +00:00
Ben Laurie
babb379849 Type-checked (and modern C compliant) OBJ_bsearch. 2008-10-12 14:32:47 +00:00
Bodo Möller
7e69565fe6 fix warnings/inconsistencies caused by the recent changes to the
ciphersuite selection code in HEAD

Submitted by: Victor Duchovni
2007-02-19 14:53:18 +00:00
Bodo Möller
52b8dad8ec Reorganize the data used for SSL ciphersuite pattern matching.
This change resolves a number of problems and obviates multiple kludges.
A new feature is that you can now say "AES256" or "AES128" (not just
"AES", which enables both).

In some cases the ciphersuite list generated from a given string is
affected by this change.  I hope this is just in those cases where the
previous behaviour did not make sense.
2007-02-17 06:45:38 +00:00
Dr. Stephen Henson
42182852f5 Constify version strings is ssl lib. 2007-01-21 16:06:05 +00:00
Bodo Möller
d804f86b88 disable some invalid ciphersuites 2005-11-15 23:32:11 +00:00
Ben Laurie
337e368239 Fix warnings. 2005-08-27 12:10:34 +00:00
Nils Larsch
6e119bb02e Keep cipher lists sorted in the source instead of sorting them at
runtime, thus removing the need for a lock. Add a test to ssltest
to verify that the cipher lists are sorted.
2005-08-25 07:29:54 +00:00
Nils Larsch
01a9792f05 remove unused internal foo_base_method functions 2005-08-08 19:04:37 +00:00
Dr. Stephen Henson
f3b656b246 Initialize SSL_METHOD structures at compile time. This removes the need
for locking code. The CRYPTO_LOCK_SSL_METHOD lock is now no longer used.
2005-08-05 23:56:11 +00:00
Ben Laurie
36d16f8ee0 Add DTLS support. 2005-04-26 16:02:40 +00:00
Ben Laurie
41a15c4f0f Give everything prototypes (well, everything that's actually used). 2005-03-31 09:26:39 +00:00
Ben Laurie
0821bcd4de Constification. 2005-03-30 10:26:02 +00:00
Geoff Thorpe
60a938c6bc (oops) Apologies all, that last header-cleanup commit was from the wrong
tree. This further reduces header interdependencies, and makes some
associated cleanups.
2004-04-19 18:09:28 +00:00
Richard Levitte
5fdf06666c Avoid including cryptlib.h, it's not really needed.
Check if IDEA is being built or not.
This is part of a large change submitted by Markus Friedl <markus@openbsd.org>
2003-12-27 16:10:30 +00:00
Geoff Thorpe
2754597013 A general spring-cleaning (in autumn) to fix up signed/unsigned warnings.
I have tried to convert 'len' type variable declarations to unsigned as a
means to address these warnings when appropriate, but when in doubt I have
used casts in the comparisons instead. The better solution (that would get
us all lynched by API users) would be to go through and convert all the
function prototypes and structure definitions to use unsigned variables
except when signed is necessary. The proliferation of (signed) "int" for
strictly non-negative uses is unfortunate.
2003-10-29 20:24:15 +00:00
Richard Levitte
4579924b7e Cleanse memory using the new OPENSSL_cleanse() function.
I've covered all the memset()s I felt safe modifying, but may have missed some.
2002-11-28 08:04:36 +00:00
Ben Laurie
54a656ef08 Security fixes brought forward from 0.9.7. 2002-11-13 15:43:43 +00:00
Bodo Möller
b8565a9af9 really fix race conditions
Submitted by: "Patrick McCormick" <patrick@tellme.com>

PR: 262
PR: 291
2002-09-25 15:38:57 +00:00
Bodo Möller
db4f691f9f oops -- must use EVP_MD_size, not EVP_MD_block_size 2002-08-03 18:49:39 +00:00
Bodo Möller
5574e0ed41 get rid of OpenSSLDie 2002-08-02 11:48:15 +00:00
Lutz Jänicke
c046fffa16 OpenSSL Security Advisory [30 July 2002]
Changes marked "(CHATS)" were sponsored by the Defense Advanced
Research Projects Agency (DARPA) and Air Force Research Laboratory,
Air Force Materiel Command, USAF, under agreement number
F30602-01-2-0537.
2002-07-30 13:04:04 +00:00
Lutz Jänicke
063a8905bf Ciphers with NULL encryption were not properly handled because they were
not covered by the strength bit mask.
Submitted by:
Reviewed by:
PR: 130
2002-07-10 06:41:55 +00:00
Bodo Möller
cf82191d77 Implement msg_callback for SSL 2.0.
Important SSL 2.0 bugfixes (bugs found while implementing msg_callback).
2001-11-10 01:16:28 +00:00
Bodo Möller
a661b65357 New functions SSL[_CTX]_set_msg_callback().
New macros SSL[_CTX]_set_msg_callback_arg().

Message callback imlementation for SSL 3.0/TLS 1.0 (no SSL 2.0 yet).

New '-msg' option for 'openssl s_client' and 'openssl s_server'
that enable a message callback that displays all protocol messages.


In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert if
client_version is smaller than the protocol version in use.
Also change ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0
if the client demanded SSL 3.0 but only TLS 1.0 is enabled; then the
client will at least see that alert.

Fix SSL[_CTX]_ctrl prototype (void * instead of char * for generic
pointer).

Add/update some OpenSSL copyright notices.
2001-10-20 17:56:36 +00:00
Dr. Stephen Henson
20d2186c87 Retain compatibility of EVP_DigestInit() and EVP_DigestFinal()
with existing code.

Modify library to use digest *_ex() functions.
2001-10-16 01:24:29 +00:00
Ben Laurie
dbad169019 Really add the EVP and all of the DES changes. 2001-07-30 23:57:25 +00:00
Dr. Stephen Henson
323f289c48 Change all calls to low level digest routines in the library and
applications to use EVP. Add missing calls to HMAC_cleanup() and
don't assume HMAC_CTX can be copied using memcpy().

Note: this is almost identical to the patch submitted to openssl-dev
by Verdon Walker <VWalker@novell.com> except some redundant
EVP_add_digest_()/EVP_cleanup() calls were removed and some changes
made to avoid compiler warnings.
2001-06-19 22:30:40 +00:00
Richard Levitte
bc36ee6227 Use new-style system-id macros everywhere possible. I hope I haven't
missed any.

This compiles and runs on Linux, and external applications have no
problems with it.  The definite test will be to build this on VMS.
2001-02-20 08:13:47 +00:00
Bodo Möller
725c88879c Finish SSL_peek/SSL_pending fixes. 2000-12-26 12:07:23 +00:00
Bodo Möller
a0aae68cf6 Fix SSL_peek and SSL_pending. 2000-12-25 18:40:46 +00:00
Bodo Möller
3880cd35ad Import s2_pkt.c wbuf fixes from OpenSSL_0_9_6-stable branch. 2000-12-18 11:35:32 +00:00
Bodo Möller
24b44446e2 Comments on SSL_peek deficiencies 2000-11-28 06:58:22 +00:00
Dr. Stephen Henson
130832150c Fixes for Win32 build.
This is mostly a work around for the old VC++ problem
that it treats func() as func(void).

Various prototypes had been added to 'compare' function
pointers that triggered this. This could be fixed by removing
the prototype, adding function pointer casts to every call or
changing the passed function to use the expected arguments.
I mostly did the latter.

The mkdef.pl script was modified to remove the typesafe
functions which no longer exist.

Oh and some functions called OPENSSL_freeLibrary() were
changed back to FreeLibrary(), wonder how that happened :-)
2000-06-21 02:25:30 +00:00
Richard Levitte
26a3a48d65 There have been a number of complaints from a number of sources that names
like Malloc, Realloc and especially Free conflict with already existing names
on some operating systems or other packages.  That is reason enough to change
the names of the OpenSSL memory allocation macros to something that has a
better chance of being unique, like prepending them with OPENSSL_.

This change includes all the name changes needed throughout all C files.
2000-06-01 22:19:21 +00:00
Richard Levitte
d3442bc780 Move the registration of callback functions to special functions
designed for that.  This removes the potential error to mix data and
function pointers.

Please note that I'm a little unsure how incorrect calls to the old
ctrl functions should be handled, in som cases.  I currently return 0
and that's it, but it may be more correct to generate a genuine error
in those cases.
2000-02-20 23:43:02 +00:00
Bodo Möller
b35e9050f2 Tolerate fragmentation and interleaving in the SSL 3/TLS record layer. 2000-02-20 23:04:06 +00:00
Ben Laurie
c417db4675 Get rid of evil cast. 2000-02-17 09:39:22 +00:00
Dr. Stephen Henson
018e57c74d Apply Lutz Behnke's 56 bit cipher patch with a few
minor changes.

Docs haven't been added at this stage. They are probably
best included in the 'ciphers' program docs.
2000-01-22 03:17:06 +00:00