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mbed TLS ChangeLog (Sorted per branch, date)
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- = mbed TLS x.x.x branch released xxxx-xx-xx
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+ = mbed TLS 2.14.0 branch released 2018-11-19
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Security
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* Fix overly strict DN comparison when looking for CRLs belonging to a
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- particular CA. This previously lead to ignoring CRLs when the CRL's issuer
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+ particular CA. This previously led to ignoring CRLs when the CRL's issuer
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name and the CA's subject name differed in their string encoding (e.g.,
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one using PrintableString and the other UTF8String) or in the choice of
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upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
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#1784.
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* Fix a flawed bounds check in server PSK hint parsing. In case the
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- incoming message buffer was placed within the first 64KB of address
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+ incoming message buffer was placed within the first 64KiB of address
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space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
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- to trigger a memory access up to 64KB beyond the incoming message buffer,
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- potentially leading to application crash or information disclosure.
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+ to trigger a memory access up to 64KiB beyond the incoming message buffer,
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+ potentially leading to an application crash or information disclosure.
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* Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
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previous settings for the number of rounds made it practical for an
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adversary to construct non-primes that would be erroneously accepted as
@@ -28,11 +28,11 @@ Security
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Features
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* Add support for temporarily suspending expensive ECC computations after
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- some configurable amount of operations, to be used in single-threaded
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- constrained systems where ECC is time consuming and blocking until
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- completion cannot be tolerated . This is enabled by
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- MBEDTLS_ECP_RESTARTABLE at compile time (disabled by default) and
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- configured by mbedtls_ecp_set_max_ops() at runtime. It applies to new
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+ some configurable amount of operations. This is intended to be used in
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+ constrained, single-threaded systems where ECC is time consuming and can
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+ block other operations until they complete . This is disabled by default,
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+ but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
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+ configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
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xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
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yet), and to existing functions in ECDH and SSL (currently only
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implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
@@ -41,12 +41,11 @@ Features
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operations. On CPUs where the extensions are available, they can accelerate
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MPI multiplications used in ECC and RSA cryptography. Contributed by
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Aurelien Jarno.
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- * Extend RSASSA-PSS signature to allow slightly a smaller salt size.
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- Previously, PSS signature always used a salt with the same length as the
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- hash, and returned an error if this was not possible. Now the salt size
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- may be up to two bytes shorter. This allows the library to support all
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- hash and signature sizes that comply with FIPS 186-4, including SHA-512
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- with a 1024-bit key.
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+ * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
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+ signature always used a salt with the same length as the hash, and returned
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+ an error if this was not possible. Now the salt size may be up to two bytes
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+ shorter. This allows the library to support all hash and signature sizes
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+ that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
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* Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
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than 256 bits limits the security of generated material to 128 bits.
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