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ca31b47188
mbedtls/library
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Hanno Becker ca31b47188 Fail when encountering invalid CBC padding in EtM records 
This commit changes the behavior of the record decryption routine
`ssl_decrypt_buf()` in the following situation:
1. A CBC ciphersuite with Encrypt-then-MAC is used.
2. A record with valid MAC but invalid CBC padding is received.
In this situation, the previous code would not raise and error but
instead forward the decrypted packet, including the wrong padding,
to the user.

This commit changes this behavior to return the error
MBEDTLS_ERR_SSL_INVALID_MAC instead.

While erroneous, the previous behavior does not constitute a
security flaw since it can only happen for properly authenticated
records, that is, if the peer makes a mistake while preparing the
padded plaintext.
2018-10-17 14:54:16 +01:00
..
.gitignore
aes.c Add missing MBEDTLS_DEPRECATED_REMOVED guards 2018-02-21 19:16:20 +01:00
aesni.c
arc4.c
asn1parse.c
asn1write.c Merge remote-tracking branch 'public/pr/1655' into mbedtls-2.7 2018-06-12 17:40:08 +01:00
base64.c
bignum.c Minor fixes 2018-03-09 10:48:12 +00:00
blowfish.c
camellia.c
ccm.c enforce input and output of ccm selftest on stack 2018-07-30 11:43:08 +03:00
certs.c
cipher_wrap.c
cipher.c Move definition of MBEDTLS_CIPHER_MODE_STREAM 2018-06-28 08:44:47 +03:00
cmac.c Merge remote-tracking branch 'public/pr/1390' into mbedtls-2.7 2018-06-27 11:11:34 +01:00
CMakeLists.txt Update library version number to 2.7.6 2018-08-31 16:07:23 +01:00
ctr_drbg.c ctr_drbg: Typo fix in the file description comment. 2018-02-10 11:11:41 +02:00
debug.c Fix compilation error with Mingw32 2017-09-06 17:51:14 +03:00
des.c
dhm.c Merge remote-tracking branch 'upstream-restricted/pr/410' into development-restricted 2018-01-26 18:43:04 +00:00
ecdh.c Address PR cpomments reviews 2017-10-10 19:04:27 +03:00
ecdsa.c Clarify the use of MBEDTLS_ERR_PK_SIG_LEN_MISMATCH 2018-03-30 18:43:16 +02:00
ecjpake.c Fix multiple quality issues in the source 2018-06-08 11:14:43 +01:00
ecp_curves.c
ecp.c Fix memory leak in ecp_mul_comb() if ecp_precompute_comb() fails 2018-07-26 11:08:06 +03:00
entropy_poll.c
entropy.c Merge branch 'development' into development-restricted 2018-01-25 17:28:31 +00:00
error.c Update error.c 2018-03-30 18:52:10 +02:00
gcm.c Merge remote-tracking branch 'upstream-public/pr/964' into development 2018-01-02 16:24:29 +01:00
havege.c
hmac_drbg.c
Makefile Merge remote-tracking branch 'upstream-public/pr/1500' into mbedtls-2.7-proposed 2018-04-01 12:41:29 +02:00
md2.c MD: Make deprecated functions not inline 2018-02-22 08:20:42 +00:00
md4.c MD: Make deprecated functions not inline 2018-02-22 08:20:42 +00:00
md5.c Fix Lucky 13 cache attack on MD/SHA padding 2018-07-12 10:18:37 +02:00
md_wrap.c New MD API: rename functions from _ext to _ret 2018-01-22 11:54:42 +01:00
md.c Merge branch 'development' into development-restricted 2018-01-25 17:28:31 +00:00
memory_buffer_alloc.c Fix braces in mbedtls_memory_buffer_alloc_status() 2018-05-23 16:32:33 +01:00
net_sockets.c Merge remote-tracking branch 'public/pr/1711' into mbedtls-2.7 2018-06-14 11:01:14 +01:00
oid.c pkcs5v2: add support for additional hmacSHA algorithms 2018-02-08 17:18:15 +08:00
padlock.c
pem.c Merge remote-tracking branch 'upstream-public/pr/778' into mbedtls-2.7-proposed 2018-03-12 23:44:56 +01:00
pk_wrap.c Clarify the use of MBEDTLS_ERR_PK_SIG_LEN_MISMATCH 2018-03-30 18:43:16 +02:00
pk.c Change PK module preprocessor check on word size 2017-08-04 13:32:15 +01:00
pkcs5.c Treat warnings as errors for IAR 2018-05-25 14:58:33 +01:00
pkcs11.c
pkcs12.c
pkparse.c Remove unnecessary mark as unused #1098 (backport) 2018-07-20 14:08:02 +02:00
pkwrite.c Adapt PK test suite to use new interface 2017-08-23 16:17:27 +01:00
platform.c Merge remote-tracking branch 'upstream-public/pr/1079' into mbedtls-2.7-proposed 2018-03-11 00:48:17 +01:00
ripemd160.c MD: Make deprecated functions not inline 2018-02-22 08:20:42 +00:00
rsa_internal.c Add explicit type cast to avoid truncation warning 2018-01-03 09:27:40 +00:00
rsa.c Merge tag 'mbedtls-2.7.2' into iotssl-1381-x509-verify-refactor-2.7-restricted 2018-03-23 02:12:44 +01:00
sha1.c Fix Lucky 13 cache attack on MD/SHA padding 2018-07-12 10:18:37 +02:00
sha256.c Fix Lucky 13 cache attack on MD/SHA padding 2018-07-12 10:18:37 +02:00
sha512.c Fix Lucky 13 cache attack on MD/SHA padding 2018-07-12 10:18:37 +02:00
ssl_cache.c Address PR review comments 2017-10-29 17:53:52 +02:00
ssl_ciphersuites.c Add ecc extensions only if ecc ciphersuite is used 2018-06-28 15:49:34 +03:00
ssl_cli.c Merge remote-tracking branch 'public/pr/1888' into mbedtls-2.7 2018-08-28 12:25:12 +01:00
ssl_cookie.c
ssl_srv.c Merge remote-tracking branch 'upstream-public/pr/1814' into mbedtls-2.7 2018-08-10 11:01:29 +01:00
ssl_ticket.c Fix bug in SSL ticket implementation removing keys of age < 1s 2018-08-22 14:58:31 +01:00
ssl_tls.c Fail when encountering invalid CBC padding in EtM records 2018-10-17 14:54:16 +01:00
threading.c Do not define and initialize global mutexes on configurations that do not use them. 2018-03-21 15:13:08 +00:00
timing.c Fix alarm(0) failure on mingw32 2018-01-29 10:24:50 +01:00
version_features.c Merge branch 'prr_424' into mbedtls-2.7-proposed 2018-02-22 16:07:32 +01:00
version.c
x509_create.c
x509_crl.c x509: CRL: reject unsupported critical extensions 2018-03-14 09:24:12 +01:00
x509_crt.c Merge remote-tracking branch 'restricted/pr/498' into mbedtls-2.7-restricted 2018-08-28 15:29:55 +01:00
x509_csr.c Coding style 2018-06-22 11:45:38 +01:00
x509.c x509.c: Remove unused includes 2018-07-02 12:13:26 +01:00
x509write_crt.c New MD API: rename functions from _ext to _ret 2018-01-22 11:54:42 +01:00
x509write_csr.c Clarify code-paths in x509write_csr and x509write_crt 2017-09-22 16:05:43 +01:00
xtea.c