wolfSSL/wolfssl v5.7.2-stable

wolfSSL Release 5.7.2 (July 8, 2024)

on GitHub

NOTE: * --enable-heapmath is being deprecated and will be removed by end of 2024

Vulnerabilities

• [Medium] CVE-2024-1544
  Potential ECDSA nonce side channel attack in versions of wolfSSL before 5.6.6 with wc_ecc_sign_hash calls. Generating the ECDSA nonce k samples a random number r and then truncates this randomness with a modular reduction mod n where n is the order of the elliptic curve. Analyzing the division through a control-flow revealing side-channel reveals a bias in the most significant bits of k. Depending on the curve this is either a negligible bias or a significant bias large enough to reconstruct k with lattice reduction methods. Thanks to Luca Wilke, Florian Sieck and Thomas Eisenbarth (University of Lübeck) for reporting the vulnerability. Details will appear in the proceedings of CCS 24.
  Fixed #7020

• [Medium] CVE-2024-5288
  A private key blinding operation, enabled by defining the macro WOLFSSL_BLIND_PRIVATE_KEY, was added to mitigate a potential row hammer attack on ECC operations. If performing ECC private key operations in an environment where a malicious user could gain fine control over the device and perform row hammer style attacks it is recommended to update the version of wolfSSL used and to build with WOLFSSL_BLIND_PRIVATE_KEY defined. Thanks to Kemal Derya, M. Caner Tol, Berk Sunar for the report (Vernam Applied Cryptography and Cybersecurity Lab at Worcester Polytechnic Institute)
  Fixed in github pull request #7416

• [Low] When parsing a provided maliciously crafted certificate directly using wolfSSL API, outside of a TLS connection, a certificate with an excessively large number of extensions could lead to a potential DoS. There are existing sanity checks during a TLS handshake with wolfSSL which mitigate this issue. Thanks to Bing Shi for the report.
  Fixed in github pull request #7597

• [Low] CVE-2024-5991
  In the function MatchDomainName(), input param str is treated as a NULL terminated string despite being user provided and unchecked. Specifically, the Openssl compatibility function X509_check_host() takes in a pointer and length to check against, with no requirements that it be NULL terminated. While calling without a NULL terminated string is very uncommon, it is still technically allowed. If a caller was attempting to do a name check on a non*NULL terminated buffer, the code would read beyond the bounds of the input array until it found a NULL terminator.
  Fixed in github pull request #7604

• [Medium] CVE-2024-5814
  A malicious TLS1.2 server can force a TLS1.3 client with downgrade capability to use a ciphersuite that it did not agree to and achieve a successful connection. This is because, aside from the extensions, the client was skipping fully parsing the server hello when downgrading from TLS 1.3.
  Fixed in github pull request #7619

• [Medium] OCSP stapling version 2 response verification bypass issue when a crafted response of length 0 is received. Found with internal testing.
  Fixed in github pull request #7702

• [Medium] OCSP stapling version 2 revocation bypass with a retry of a TLS connection attempt. A revoked CA certificate could incorrectly be loaded into the trusted signers list and used in a repeat connection attempt. Found with internal testing.
  Fixed in github pull request #7702

New Feature Additions

• Added Dilithium/ML-DSA: Implementation of ML-DSA-44/65/87 (PR 7622)
• AES RISC-V 64-bit ASM: ECB/CBC/CTR/GCM/CCM (PR 7569)
• Added CUDA support for AES encryption (PR 7436)
• Added support for gRPC (PR 7445)
• Added function wc_RsaPrivateKeyDecodeRaw to import raw RSA private keys (PR 7608)
• Added crypto callback for SHA-3 (PR 7670)
• Support for Infineon Modus Toolbox with wolfSSL (PR 7369)
• Allow user to send a user_canceled alert by calling wolfSSL_SendUserCanceled (PR 7590)
• C# wrapper SNI support added (PR 7610)
• Quantum-safe algorithm support added to the Linux kernel module (PR 7574)
• Support for NIST 800-56C Option 1 KDF, using the macro WC_KDF_NIST_SP_800_56C added (PR 7589)
• AES-XTS streaming mode added, along with hardware acceleration and kernel module use (PR 7522, 7560, 7424)
• PlatformIO FreeRTOS with ESP build and addition of benchmark and test example applications (PR 7528, 7413, 7559, 7542)

Enhancements and Optimizations

• Expanded STM32 AES hardware acceleration support for use with STM32H5 (PR 7578)
• Adjusted wc_xmss and wc_lms settings to support use with wolfBoot (PR 7393)
• Added the --enable-rpk option to autotools build for using raw public key support (PR 7379)
• SHA-3 Thumb2, ARM32 assembly implementation added (PR 7667)
• Improvements to RSA padding to expose Pad/Unpad APIs (PR 7612)
• Updates and API additions for supporting socat version 1.8.0.0 (PR 7594)
• cmake build improvements, expanding build options with SINGLE_THREADED and post-quantum algorithms, adjusting the generation of options.h file and using “yes;no” boolean instead of strings (PR 7611, 7546, 7479, 7480, 7380)
• Improvements for Renesas RZ support (PR 7474)
• Improvements to dual algorithm certificates for post-quantum keys (PR 7286)
• Added wolfSSL_SessionIsSetup so the user can check if a session ticket has been sent by the server (PR 7430)
• hostap updates: Implement PACs for EAP-FAST and filter cipher list on TLS version change (PR 7446)
• Changed subject name comparison to match different upper and lower cases (PR 7420)
• Support for DTLS 1.3 downgrade when using PSK (PR 7367)
• Update to static memory build for more generic memory pools used (PR 7418)
• Improved performance of Kyber C implementation (PR 7654)
• Support for ECC_CACHE_CURVE with no malloc (PR 7490)
• Added the configure option --enable-debug-trace-errcodes (macro WOLFSSL_DEBUG_TRACE_ERROR_CODES) which enables more debug tracking of error code values (PR 7634)
• Enhanced wc_MakeRsaKey and wc_RsaKeyToDer to work with WOLFSSL_NO_MALLOC (PR 7362)
• Improvements to assembly implementations of ChaCha20 and Poly1305 ASM for use with MSVC (PR 7319)
• Cortex-M inline assembly labels with unique number appended (PR 7649)
• Added secret logging callback to TLS <= 1.2, enabled with the macro HAVE_SECRET_CALLBACK (PR 7372)
• Made wc_RNG_DRBG_Reseed() a public wolfCrypt API (PR 7386)
• Enabled DES3 support without the DES3 ciphers. To re-enable DES3 cipher suites, use the configure flag --enable-des3-tls-suites (PR 7315)
• Added stubs required for latest nginx (1.25.5) (PR 7449)
• Added option for using a custom salt with the function wc_ecc_ctx_set_own_salt (PR 7552)
• Added PQ files for Windows (PR 7419)
• Enhancements to static memory feature, adding the option for a global heap hint (PR 7478) and build options for a lean or debug setting, enabled with --enable-staticmemory=small or --enable-staticmemory=debug (PR 7597)
• Updated --enable-jni to define SESSION_CERTS for wolfJSSE (PR 7557)
• Exposed DTLS in Ada wrapper and updated examples (PR 7397)
• Added additional minimum TLS extension size sanity checks (PR 7602)
• ESP improvements: updating the examples and libraries, updates for Apple HomeKit SHA/SRP, and fix for endianness with SHA512 software fallback (PR 7607, 7392, 7505, 7535)
• Made the wc_CheckCertSigPubKey API publicly available with the define of the macro WOLFSSL_SMALL_CERT_VERIFY (PR 7599)
• Added an alpha/preview of additional FIPS 140-3 full submission, bringing additional algorithms such as SRTP-KDF, AES-XTS, GCM streaming, AES-CFB, ED25519, and ED448 into the FIPS module boundary (PR 7295)
• XCODE support for v5.2.3 of the FIPS module (PR 7140)
• Expanded OpenSSL compatibility layer and added EC_POINT_hex2point (PR 7191)

Fixes

• Fixed Kyber control-flow timing leak. Thanks to Antoon Purnal from PQShield for the report.
• Fixed the NXP MMCAU HW acceleration for SHA-256 (PR 7389)
• Fixed AES-CFB1 encrypt/decrypt on size (8*x-1) bits (PR 7431)
• Fixed use of %rip with SHA-256 x64 assembly (PR 7409)
• Fixed OCSP response message build for DTLS (PR 7671)
• Handled edge case in wc_ecc_mulmod() with zero (PR 7532)
• Fixed RPK (Raw Public Key) to follow certificate use correctly (PR 7375)
• Added sanity check on record header with QUIC use (PR 7638)
• Added sanity check for empty directory strings in X.509 when parsing (PR 7669)
• Added sanity check on non-conforming serial number of 0 in certificates being parsed (PR 7625)
• Fixed wolfSSL_CTX_set1_sigalgs_list() to make the TLS connection conform to the selected sig hash algorithm (PR 7693)
• Various fixes for dual algorithm certificates including small stack use and support for Certificate Signing Requests (PR 7577)
• Added sanity check for critical policy extension when wolfSSL is built without policy extension support enabled (PR 7388)
• Added sanity check that the ed25519 signature is smaller than the order (PR 7513)
• Fixed Segger emNet to handle non-blocking want read/want write (PR 7581)