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Fix renegotiation at incorrect times in DTLS

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Fix an incorrect condition in ssl_check_ctr_renegotiate() that compared
64 bits of record counter instead of 48 bits as described in RFC 6347
Section 4.3.1. This would cause the function's return value to be
occasionally incorrect and the renegotiation routines to be triggered
at unexpected times.
This commit is contained in:
Andres AG
2016-12-15 17:01:16 +00:00
committed by Simon Butcher
parent 747fceb785
commit 2196c7f81c
3 changed files with 21 additions and 6 deletions
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@@ -8,6 +8,11 @@ Bugfix
* Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
x509_csr.c that are reported when building mbed TLS with a config.h that
does not define MBEDTLS_PEM_PARSE_C. #562
* Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
would compare 64 bits of the record counter instead of 48 bits as indicated
in RFC 6347 Section 4.3.1. This could cause the execution of the
renegotiation routines at unexpected times when the protocol is DTLS. Found
by wariua. #687
* Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
the input string in PEM format to extract the different components. Found
by Eyal Itkin.