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Author SHA1 Message Date
Gilles Peskine ae97c25a91 Add ChangeLog entry 2018-10-08 11:49:15 +02:00
Gilles Peskine dabe87cd71 Fix a timing-based Bleichenbacher attack on PKCS#1v1.5 decryption 
mbedtls_rsa_rsaes_pkcs1_v15_decrypt took care of calculating the
padding length without leaking the amount of padding or the validity
of the padding. However it then skipped the copying of the data if the
padding was invalid, which could allow an adversary to find out
whether the padding was valid through precise timing measurements,
especially if for a local attacker who could observe memory access via
cache timings.

Avoid this leak by always copying from the decryption buffer to the
output buffer, even when the padding is invalid. With invalid padding,
copy the same amount of data as what is expected on valid padding: the
minimum valid padding size if this fits in the output buffer,
otherwise the output buffer size. To avoid leaking payload data from
an unsuccessful decryption, zero the decryption buffer before copying
if the padding was invalid.
 2018-10-08 11:49:15 +02:00
Gilles Peskine cd500f3832 Minor readability improvement 
Polish the beginning of mbedtls_rsa_rsaes_pkcs1_v15_decrypt a little,
to prepare for some behavior changes.
 2018-10-08 11:49:15 +02:00
Simon Butcher 7a539a57d7 Merge remote-tracking branch 'public/pr/1812' into mbedtls-2.7 2018-09-27 17:19:29 +01:00
Simon Butcher f73b437fc6 Add ChangeLog entry for PR #1812 2018-09-26 22:59:42 +01:00
Simon Butcher fa5054ffab Fix ChangeLog entry for PR #1972 2018-09-26 22:59:31 +01:00
Andrzej Kurek c895821766 ssl-opt.sh: change expected output for large srv packet test with SSLv3 
This test also exercises a protection against BEAST
and should expect message splitting.
 2018-09-26 22:53:13 +01:00
Andrzej Kurek 3d5cd4ec0a Remove trailing whitespace 2018-09-26 22:53:13 +01:00
Andrzej Kurek 216b40de9b ssl_server2: add buffer overhead for a termination character 
Switch to mbedtls style of memory allocation
 2018-09-26 22:53:12 +01:00
Andrzej Kurek d731a6348a Add missing large and small packet tests for ssl_server2 2018-09-26 22:53:12 +01:00
Andrzej Kurek 557335e56d Added buffer_size and response_size options for ssl-server2. 
Added appropriate tests.
 2018-09-26 22:53:12 +01:00
Simon Butcher 651902d062 Merge remote-tracking branch 'public/pr/1972' into mbedtls-2.7 2018-09-26 22:35:51 +01:00
Simon Butcher 9863afc5e2 Merge remote-tracking branch 'public/pr/1899' into mbedtls-2.7 2018-09-26 22:00:02 +01:00
Simon Butcher d6a63f4ca5 Clarified ChangeLog entry 
ChangeLog entry for backport of #1890 was misleading, so corrected it.
 2018-09-13 11:59:03 +01:00
Simon Butcher eee169a082
Merge pull request #506 from sbutcher-arm/mbedtls-version-2.7.6 
Update library version number to 2.7.6
 2018-08-31 17:29:24 +01:00
Simon Butcher 34997fd291 Update library version number to 2.7.6 2018-08-31 16:07:23 +01:00
Simon Butcher a36fe37429 Revised and clarified ChangeLog 
Minor changes to fix language, merge mistakes and incorrect classifications of
changes.
 2018-08-31 12:00:58 +01:00
Andrzej Kurek 77798b9f2d ssl-opt.sh: change expected output for large srv packet test with SSLv3 
This test also exercises a protection against BEAST
and should expect message splitting.
 2018-08-29 07:05:59 -04:00
Andrzej Kurek 0d50aeb4d4 Remove trailing whitespace 2018-08-29 07:05:44 -04:00
Andrzej Kurek fb764931ee ssl_server2: add buffer overhead for a termination character 
Switch to mbedtls style of memory allocation
 2018-08-29 07:05:44 -04:00
Andrzej Kurek d5ab1883b7 Add missing large and small packet tests for ssl_server2 2018-08-29 07:05:44 -04:00
Andrzej Kurek 6b3ec17463 Added buffer_size and response_size options for ssl-server2. 
Added appropriate tests.
 2018-08-29 07:05:44 -04:00
Simon Butcher 9877efb401 Merge remote-tracking branch 'restricted/pr/437' into mbedtls-2.7-restricted 2018-08-28 15:34:28 +01:00
Simon Butcher 242169bdc3 Merge remote-tracking branch 'restricted/pr/498' into mbedtls-2.7-restricted 2018-08-28 15:29:55 +01:00
Simon Butcher 6910201cd1 Merge remote-tracking branch 'restricted/pr/493' into mbedtls-2.7-restricted 2018-08-28 15:23:39 +01:00
Simon Butcher fbd0ccc0f0 Merge remote-tracking branch 'public/pr/1978' into mbedtls-2.7 2018-08-28 12:32:21 +01:00
Simon Butcher 4102b3d377 Merge remote-tracking branch 'public/pr/1888' into mbedtls-2.7 2018-08-28 12:25:12 +01:00
Simon Butcher cc4f58d08c Merge remote-tracking branch 'public/pr/1956' into mbedtls-2.7 2018-08-28 12:16:11 +01:00
Simon Butcher f7be6b029e Merge remote-tracking branch 'public/pr/1960' into mbedtls-2.7 2018-08-28 11:51:56 +01:00
Simon Butcher 040cff9895 Merge remote-tracking branch 'public/pr/1974' into mbedtls-2.7 2018-08-28 10:20:37 +01:00
Simon Butcher b6cf145b7a Merge remote-tracking branch 'public/pr/1981' into mbedtls-2.7 2018-08-28 10:18:32 +01:00
Hanno Becker 063c50df8a pk_encrypt: Uniformize debugging output 2018-08-23 15:57:15 +01:00
Hanno Becker 45d006a9cc Fix typos in programs/x509/cert_write.c 
Fixes #1922.
 2018-08-23 15:27:21 +01:00
Hanno Becker 6953ac2dbe Minor formatting improvements in pk_encrypt and pk_decrypt examples 2018-08-23 15:14:52 +01:00
Hanno Becker 20b5d14b28 Adapt ChangeLog 2018-08-23 15:14:51 +01:00
Hanno Becker a82a6e126d Correct memory leak in pk_decrypt example program 2018-08-23 15:14:50 +01:00
Hanno Becker 20fce25f28 Correct memory-leak in pk_encrypt example program 2018-08-23 15:14:50 +01:00
Hanno Becker dc6c0e49ad ssl-opt.sh: Preserve proxy log, too, if --preserve-logs is specified 2018-08-22 15:24:25 +01:00
Hanno Becker 4d646a60bd Adapt ChangeLog 2018-08-22 15:11:28 +01:00
Hanno Becker b554636236 ssl-opt.sh: Add DTLS session resumption tests 
Fixes #1969.
 2018-08-22 15:07:31 +01:00
Hanno Becker 6c794faa46 Fix bug in SSL ticket implementation removing keys of age < 1s 
Fixes #1968.
 2018-08-22 14:58:31 +01:00
Jaeden Amero e4d14208aa Merge remote-tracking branch 'upstream-public/pr/1953' into mbedtls-2.7 2018-08-17 15:31:58 +01:00
Hanno Becker 12f7ede56e Compute record expansion in steps to ease readability 2018-08-17 15:30:03 +01:00
Jaeden Amero ab397dd47c Merge remote-tracking branch 'upstream-public/pr/1944' into mbedtls-2.7 2018-08-17 14:27:06 +01:00
Hanno Becker f38db01c42 Adapt ChangeLog 2018-08-17 10:12:23 +01:00
Hanno Becker dbd3e88479 Fix mbedtls_ssl_get_record_expansion() for CBC modes 
`mbedtls_ssl_get_record_expansion()` is supposed to return the maximum
difference between the size of a protected record and the size of the
encapsulated plaintext.

Previously, it did not correctly estimate the maximum record expansion
in case of CBC ciphersuites in (D)TLS versions 1.1 and higher, in which
case the ciphertext is prefixed by an explicit IV.

This commit fixes this bug. Fixes #1914.
 2018-08-17 10:12:21 +01:00
Hanno Becker 517e84a0e3 Improve ChangeLog wording for the commmit that Fixes #1954. 2018-08-17 10:04:08 +01:00
Hanno Becker 3a333a58ba Add tests for empty CA list in CertificateRequest, TLS 1.0 & 1.1 2018-08-17 10:04:08 +01:00
Hanno Becker 4a4c04dc9c Adapt ChangeLog 2018-08-16 15:53:02 +01:00
Hanno Becker 78d5d8225e Fix overly strict bounds check in ssl_parse_certificate_request() 2018-08-16 15:53:02 +01:00