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Merge branch 'pr_1395' into development-proposed

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This commit is contained in:
Gilles Peskine 2018-04-04 09:14:12 +02:00
parent 1fae860f0f d6953b58d7
commit a09453f495
2 changed files with 19 additions and 0 deletions
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3
ChangeLog
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@ -65,6 +65,9 @@ Changes
environment variable when using the project makefiles.
* Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
by Alexey Skalozub in #405.
* In the SSL module, when f_send, f_recv or f_recv_timeout report
transmitting more than the required length, return an error. Raised by
Sam O'Connor in #1245.
= mbed TLS 2.8.0 branch released 2018-03-16

16
library/ssl_tls.c
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@ -2434,6 +2434,14 @@ int mbedtls_ssl_fetch_input( mbedtls_ssl_context *ssl, size_t nb_want )
if( ret < 0 )
return( ret );
if ( (size_t)ret > len || ( INT_MAX > SIZE_MAX && ret > SIZE_MAX ) )
{
MBEDTLS_SSL_DEBUG_MSG( 1,
( "f_recv returned %d bytes but only %lu were requested",
ret, (unsigned long)len ) );
return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
}
ssl->in_left += ret;
}
}
@ -2481,6 +2489,14 @@ int mbedtls_ssl_flush_output( mbedtls_ssl_context *ssl )
if( ret <= 0 )
return( ret );
if( (size_t)ret > ssl->out_left || ( INT_MAX > SIZE_MAX && ret > SIZE_MAX ) )
{
MBEDTLS_SSL_DEBUG_MSG( 1,
( "f_send returned %d bytes but only %lu bytes were sent",
ret, (unsigned long)ssl->out_left ) );
return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
}
ssl->out_left -= ret;
}