Assemble ChangeLog
Executed scripts/assemble_changelog.py.
Signed-off-by: Janos Follath <janos.follath@arm.com>
diff --git a/ChangeLog b/ChangeLog
index 32853ce..1c6e414 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,116 @@
mbed TLS ChangeLog (Sorted per branch, date)
+= mbed TLS x.x.x branch released xxxx-xx-xx
+
+API changes
+ * In the PSA API, rename the types of elliptic curve and Diffie-Hellman group families to
+ psa_ecc_family_t and psa_dh_family_t, in line with the PSA Crypto API specification version 1.0.0.
+ Rename associated macros as well:
+ PSA_ECC_CURVE_xxx renamed to PSA_ECC_FAMILY_xxx
+ PSA_DH_GROUP_xxx renamed to PSA_DH_FAMILY_xxx
+ PSA_KEY_TYPE_GET_CURVE renamed to to PSA_KEY_TYPE_ECC_GET_FAMILY
+ PSA_KEY_TYPE_GET_GROUP renamed to PSA_KEY_TYPE_DH_GET_FAMILY
+
+Default behavior changes
+ * Stop storing persistent information about externally stored keys created
+ through PSA Crypto with a volatile lifetime. Reported in #3288 and
+ contributed by Steven Cooreman in #3382.
+
+Features
+ * The new function mbedtls_ecp_write_key() exports private ECC keys back to
+ a byte buffer. It is the inverse of the existing mbedtls_ecp_read_key().
+ * Support building on e2k (Elbrus) architecture: correctly enable
+ -Wformat-signedness, and fix the code that causes signed-one-bit-field
+ and sign-compare warnings. Contributed by makise-homura (Igor Molchanov)
+ <akemi_homura@kurisa.ch>.
+
+Security
+ * Fix a vulnerability in the verification of X.509 certificates when
+ matching the expected common name (the cn argument of
+ mbedtls_x509_crt_verify()) with the actual certificate name: when the
+ subjecAltName extension is present, the expected name was compared to any
+ name in that extension regardless of its type. This means that an
+ attacker could for example impersonate a 4-bytes or 16-byte domain by
+ getting a certificate for the corresponding IPv4 or IPv6 (this would
+ require the attacker to control that IP address, though). Similar attacks
+ using other subjectAltName name types might be possible. Found and
+ reported by kFYatek in #3498.
+ * When checking X.509 CRLs, a certificate was only considered as revoked if
+ its revocationDate was in the past according to the local clock if
+ available. In particular, on builds without MBEDTLS_HAVE_TIME_DATE,
+ certificates were never considered as revoked. On builds with
+ MBEDTLS_HAVE_TIME_DATE, an attacker able to control the local clock (for
+ example, an untrusted OS attacking a secure enclave) could prevent
+ revocation of certificates via CRLs. Fixed by no longer checking the
+ revocationDate field, in accordance with RFC 5280. Reported by
+ yuemonangong in #3340. Reported independently and fixed by
+ Raoul Strackx and Jethro Beekman in #3433.
+ * In (D)TLS record decryption, when using a CBC ciphersuites without the
+ Encrypt-then-Mac extension, use constant code flow memory access patterns
+ to extract and check the MAC. This is an improvement to the existing
+ countermeasure against Lucky 13 attacks. The previous countermeasure was
+ effective against network-based attackers, but less so against local
+ attackers. The new countermeasure defends against local attackers, even
+ if they have access to fine-grained measurements. In particular, this
+ fixes a local Lucky 13 cache attack found and reported by Tuba Yavuz,
+ Farhaan Fowze, Ken (Yihan) Bai, Grant Hernandez, and Kevin Butler
+ (University of Florida) and Dave Tian (Purdue University).
+ * Fix side channel in RSA private key operations and static (finite-field)
+ Diffie-Hellman. An adversary with precise enough timing and memory access
+ information (typically an untrusted operating system attacking a secure
+ enclave) could bypass an existing counter-measure (base blinding) and
+ potentially fully recover the private key.
+ * Fix a 1-byte buffer overread in mbedtls_x509_crl_parse_der().
+ Credit to OSS-Fuzz for detecting the problem and to Philippe Antoine
+ for pinpointing the problematic code.
+ * Zeroising of plaintext buffers in mbedtls_ssl_read() to erase unused
+ application data from memory. Reported in #689 by
+ Johan Uppman Bruce of Sectra.
+
+Bugfix
+ * Library files installed after a CMake build no longer have execute
+ permission.
+ * Use local labels in mbedtls_padlock_has_support() to fix an invalid symbol redefinition if the function is inlined.
+ Reported in #3451 and fix contributed in #3452 by okhowang.
+ * Fix the endianness of Curve25519 keys imported/exported through the PSA
+ APIs. psa_import_key and psa_export_key will now correctly expect/output
+ Montgomery keys in little-endian as defined by RFC7748. Contributed by
+ Steven Cooreman in #3425.
+ * Fix build errors when the only enabled elliptic curves are Montgomery
+ curves. Raised by signpainter in #941 and by Taiki-San in #1412. This
+ also fixes missing declarations reported by Steven Cooreman in #1147.
+ * Fix self-test failure when the only enabled short Weierstrass elliptic
+ curve is secp192k1. Fixes #2017.
+ * PSA key import will now correctly import a Curve25519/Curve448 public key
+ instead of erroring out. Contributed by Steven Cooreman in #3492.
+ * Use arc4random_buf on NetBSD instead of rand implementation with cyclical
+ lower bits. Fix contributed in #3540.
+ * Fix a memory leak in mbedtls_md_setup() when using HMAC under low memory
+ conditions. Reported and fix suggested by Guido Vranken in #3486.
+ * Fix bug in redirection of unit test outputs on platforms where stdout is
+ defined as a macro. First reported in #2311 and fix contributed in #3528.
+
+Changes
+ * Only pass -Wformat-signedness to versions of GCC that support it. Reported
+ in #3478 and fix contributed in #3479 by okhowang.
+ * Reduce the stack consumption of mbedtls_x509write_csr_der() which
+ previously could lead to stack overflow on constrained devices.
+ Contributed by Doru Gucea and Simon Leet in #3464.
+ * Undefine the ASSERT macro before defining it locally, in case it is defined
+ in a platform header. Contributed by Abdelatif Guettouche in #3557.
+ * Update copyright notices to use Linux Foundation guidance. As a result,
+ the copyright of contributors other than Arm is now acknowledged, and the
+ years of publishing are no longer tracked in the source files. This also
+ eliminates the need for the lines declaring the files to be part of
+ MbedTLS. Fixes #3457.
+ * Add the command line parameter key_pwd to the ssl_client2 and ssl_server2
+ example applications which allows to provide a password for the key file
+ specified through the existing key_file argument. This allows the use of
+ these applications with password-protected key files. Analogously but for
+ ssl_server2 only, add the command line parameter key_pwd2 which allows to
+ set a password for the key file provided through the existing key_file2
+ argument.
+
= mbed TLS 2.23.0 branch released 2020-07-01
Default behavior changes