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Merge remote-tracking branch 'mbedtls-restricted/development-restricted' into mbedtls-3.2.0rc0-pr

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This commit is contained in:
Ronald Cron
2022-07-08 18:56:49 +02:00
parent 6e80e09bd1 41aa808a56
commit ce7d76e2ee
47 changed files with 1283 additions and 94 deletions
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11
ChangeLog.d/add_mbedtls_setbuf.txt Normal file
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Security
* Add the platform function mbedtls_setbuf() to allow buffering to be
disabled on stdio files, to stop secrets loaded from said files being
potentially left in memory after file operations. Reported by
Glenn Strauss.
Requirement changes
* The library will no longer compile out of the box on a platform without
setbuf(). If your platform does not have setbuf(), you can configure an
alternative function by enabling MBEDTLS_PLATFORM_SETBUF_ALT or
MBEDTLS_PLATFORM_SETBUF_MACRO.

4
ChangeLog.d/bignum-0-mod-2.txt Normal file
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Bugfix
* Fix a null pointer dereference when performing some operations on zero
represented with 0 limbs (specifically mbedtls_mpi_mod_int() dividing
by 2, and mbedtls_mpi_write_string() in base 2).

6
ChangeLog.d/buf-overread-use-psa-static-ecdh.txt Normal file
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Security
* Fix a potential heap buffer overread in TLS 1.2 server-side when
MBEDTLS_USE_PSA_CRYPTO is enabled, an opaque key (created with
mbedtls_pk_setup_opaque()) is provisioned, and a static ECDH ciphersuite
is selected. This may result in an application crash or potentially an
information leak.

9
ChangeLog.d/cookie_parsing_bug.txt Normal file
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Security
* Fix a buffer overread in DTLS ClientHello parsing in servers with
MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled. An unauthenticated client
or a man-in-the-middle could cause a DTLS server to read up to 255 bytes
after the end of the SSL input buffer. The buffer overread only happens
when MBEDTLS_SSL_IN_CONTENT_LEN is less than a threshold that depends on
the exact configuration: 258 bytes if using mbedtls_ssl_cookie_check(),
and possibly up to 571 bytes with a custom cookie check function.
Reported by the Cybeats PSI Team.

4
ChangeLog.d/fix_tls_record_size_check.txt Normal file
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Bugfix
* Fix record sizes larger than 16384 being sometimes accepted despite being
non-compliant. This could not lead to a buffer overflow. In particular,
application data size was already checked correctly.

8
ChangeLog.d/tls13-add-missing-overread-check.txt Normal file
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Security
* Fix a buffer overread in TLS 1.3 Certificate parsing. An unauthenticated
client or server could cause an MbedTLS server or client to overread up
to 64 kBytes of data and potentially overread the input buffer by that
amount minus the size of the input buffer. As overread data undergoes
various checks, the likelihood of reaching the boundary of the input
buffer is rather small but increases as its size
MBEDTLS_SSL_IN_CONTENT_LEN decreases.

7
ChangeLog.d/tls13-fix-key-usage-checks.txt Normal file
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Security
* Fix check of certificate key usage in TLS 1.3. The usage of the public key
provided by a client or server certificate for authentication was not
checked properly when validating the certificate. This could cause a
client or server to be able to authenticate itself through a certificate
to an Mbed TLS TLS 1.3 server or client while it does not own a proper
certificate to do so.