Commit Graph

251 Commits

Author SHA1 Message Date
Manuel Pégourié-Gonnard
de9c8a5734 Fix potential overflow in CertificateRequest 2015-10-02 12:04:20 +02:00
Manuel Pégourié-Gonnard
a701d2f5e9 Fix bug in server parsing point formats extension
There is only one length byte but for some reason we skipped two, resulting in
reading one byte past the end of the extension. Fortunately, even if that
extension is at the very end of the ClientHello, it can't be at the end of the
buffer since the ClientHello length is at most SSL_MAX_CONTENT_LEN and the
buffer has some more room after that for MAC and so on. So there is no
buffer overread.

Possible consequences are:
- nothing, if the next byte is 0x00, which is a comment first byte for other
  extensions, which is why the bug remained unnoticed
- using a point format that was not offered by the peer if next byte is 0x01.
  In that case the peer will reject our ServerKeyExchange message and the
handshake will fail.
- thinking that we don't have a common point format even if we do, which will
  cause us to immediately abort the handshake.
None of these are a security issue.

The same bug was fixed client-side in fd35af15

Backport of f7022d1
2015-09-17 11:46:56 +02:00
Manuel Pégourié-Gonnard
8e8ae3d961 Fix potential NULL dereference on bad usage 2015-06-23 18:57:28 +02:00
Manuel Pégourié-Gonnard
b26b75e17b Clean up RSA PMS checking code 2015-06-23 18:52:09 +02:00
Manuel Pégourié-Gonnard
e16b62c3a9 Make results of (ext)KeyUsage accessible 2015-04-29 17:07:31 +02:00
Manuel Pégourié-Gonnard
ce60fbeb30 Fix potential timing difference with RSA PMS 2015-04-15 16:56:28 +02:00
Manuel Pégourié-Gonnard
fe44643b0e Rename website and repository 2015-03-06 13:17:10 +00:00
Manuel Pégourié-Gonnard
2ee8d24ca2 Simplify some constant-time code
Some people recommend using bit operations to avoid the compiler producing a
branch on `ret != 0`, but:
- this makes the code less readable,
- here I got a warning from some compilers about unsigned unary minus
- and anyway modern compilers don't produce a branch here, checked on x64 and
  arm with various -O values.
2015-02-11 15:29:15 +00:00
Rich Evans
00ab47026b cleanup library and some basic tests. Includes, add guards to includes 2015-02-10 11:28:46 +00:00
Manuel Pégourié-Gonnard
6674cce892 Fix potential timing issue in RSA pms handling 2015-02-06 11:36:56 +00:00
Manuel Pégourié-Gonnard
860b51642d Fix url again 2015-01-28 17:12:07 +00:00
Manuel Pégourié-Gonnard
607d663b41 Add debug info for cert/suite selection 2015-01-28 15:28:30 +01:00
Manuel Pégourié-Gonnard
085ab040aa Fix website url to use https. 2015-01-23 11:06:27 +00:00
Manuel Pégourié-Gonnard
9698f5852c Remove maintainer line. 2015-01-23 10:59:00 +00:00
Manuel Pégourié-Gonnard
19f6b5dfaa Remove redundant "all rights reserved" 2015-01-23 10:54:00 +00:00
Manuel Pégourié-Gonnard
a658a4051b Update copyright 2015-01-23 09:55:24 +00:00
Manuel Pégourié-Gonnard
967a2a5f8c Change name to mbed TLS in the copyright notice 2015-01-22 14:28:16 +00:00
Manuel Pégourié-Gonnard
59c6f2ef21 Avoid nested if's without braces.
Creates a potential for confusing code if we later want to add an else clause.
2015-01-22 11:06:40 +00:00
Paul Bakker
5b8f7eaa3e Merge new security defaults for programs (RC4 disabled, SSL3 disabled) 2015-01-14 16:26:54 +01:00
Paul Bakker
c82b7e2003 Merge option to disable truncated hmac on the server-side 2015-01-14 16:16:55 +01:00
Paul Bakker
e522d0fa57 Merge smarter certificate selection for pre-TLS-1.2 clients 2015-01-14 16:12:48 +01:00
Paul Bakker
f6080b8557 Merge support for enabling / disabling renegotiation support at compile-time 2015-01-13 16:18:23 +01:00
Paul Bakker
d7e2483bfc Merge miscellaneous fixes into development 2015-01-13 16:04:38 +01:00
Manuel Pégourié-Gonnard
bd47a58221 Add ssl_set_arc4_support()
Rationale: if people want to disable RC4 but otherwise keep the default suite
list, it was cumbersome. Also, since it uses a global array,
ssl_list_ciphersuite() is not a convenient place. So the SSL modules look like
the best place, even if it means temporarily adding one SSL setting.
2015-01-13 13:03:06 +01:00
Manuel Pégourié-Gonnard
e117a8fc0d Make truncated hmac a runtime option server-side
Reading the documentation of ssl_set_truncated_hmac() may give the impression
I changed the default for clients but I didn't, the old documentation was
wrong.
2015-01-09 12:52:20 +01:00
Manuel Pégourié-Gonnard
f01768c55e Specific error for suites in common but none good 2015-01-08 17:06:16 +01:00
Manuel Pégourié-Gonnard
df331a55d2 Prefer SHA-1 certificates for pre-1.2 clients 2015-01-08 16:43:07 +01:00
Manuel Pégourié-Gonnard
6458e3b743 Some more refactoring/tuning. 2015-01-08 14:16:56 +01:00
Manuel Pégourié-Gonnard
846ba473af Minor refactoring 2015-01-08 13:54:38 +01:00
Manuel Pégourié-Gonnard
d94232389e Skip signature_algorithms ext if PSK only 2014-12-02 11:57:29 +01:00
Manuel Pégourié-Gonnard
eaecbd3ba8 Fix warning in reduced configs 2014-12-02 10:40:55 +01:00
Manuel Pégourié-Gonnard
615e677c0b Make renegotiation a compile-time option 2014-12-02 10:40:54 +01:00
Manuel Pégourié-Gonnard
78e745fc0a Don't send back EtM extension if not using CBC 2014-11-05 16:00:50 +01:00
Manuel Pégourié-Gonnard
699cafaea2 Implement initial negotiation of EtM
Not implemented yet:
- actually using EtM
- conditions on renegotiation
2014-11-05 16:00:50 +01:00
Manuel Pégourié-Gonnard
b575b54cb9 Forbid extended master secret with SSLv3 2014-11-05 16:00:50 +01:00
Manuel Pégourié-Gonnard
367381fddd Add negotiation of Extended Master Secret
(But not the actual thing yet.)
2014-11-05 16:00:49 +01:00
Manuel Pégourié-Gonnard
01b2699198 Implement FALLBACK_SCSV server-side 2014-11-05 16:00:49 +01:00
Manuel Pégourié-Gonnard
43c3b28ca6 Fix memory leak with crafted ClientHello 2014-10-17 12:42:11 +02:00
Manuel Pégourié-Gonnard
480905d563 Fix selection of hash from sig_alg ClientHello ext. 2014-08-30 14:19:59 +02:00
Paul Bakker
84bbeb58df Adapt cipher and MD layer with _init() and _free() 2014-07-09 10:19:24 +02:00
Paul Bakker
accaffe2c3 Restructure ssl_handshake_init() and small fixes 2014-07-09 10:19:24 +02:00
Paul Bakker
5b4af39a36 Add _init() and _free() for hash modules 2014-07-09 10:19:23 +02:00
Manuel Pégourié-Gonnard
d27680bd5e Clarify code using PSK callback 2014-07-08 14:20:26 +02:00
Manuel Pégourié-Gonnard
14beb08542 Fix missing const 2014-07-08 14:20:26 +02:00
Manuel Pégourié-Gonnard
08e81e0c8f Change selection of hash algorithm for TLS 1.2 2014-07-08 14:20:26 +02:00
Manuel Pégourié-Gonnard
dd0c0f33c0 Better usage of dhm_calc_secret in SSL 2014-06-25 11:26:14 +02:00
Manuel Pégourié-Gonnard
4d2a8eb6ff SSL modules now using x509_crt_parse_der()
Avoid uselessly trying to decode PEM.
2014-06-23 11:54:57 +02:00
Paul Bakker
66d5d076f7 Fix formatting in various code to match spacing from coding style 2014-06-17 17:06:47 +02:00
Paul Bakker
db20c10423 Add #endif comments for #endif more than 10 lines from #if / #else 2014-06-17 14:34:44 +02:00
Paul Bakker
3461772559 Introduce polarssl_zeroize() instead of memset() for zeroization 2014-06-14 16:46:03 +02:00