WOLFSSH CHANGELOG

(07/23/2021)

• New Feature Additions and Improvements
  • SCP improvements to run on embedded RTOS
  • For SFTP messages, check both minimum bound and maximum bound of the length value
  • Added option for --enable-small-stack
  • Added SFTP support for FatFs
  • Added 192 and 256 bit support for AES-CBC, AES-CTR, and AES-GCM
  • Added options to disable algorithms. (ie WOLFSSH_NO_ECDSA, WOLFSSH_NO_AES_CBC, etc)
  • Improved handling of builds without ECC
• Fixes
  • When processing public key user auth, initialize the key earlier
  • When processing public key user auth, use GetSize() instead of GetUint32()
  • Fix for better handling rekey
  • Fix for build with NO_WOLFSSH_CLIENT macro and --enable-all
  • Fix configuration with WOLFSSH_NO_DH
  • To add internal function to purge a packet in case building one fails
  • Fix for cleanup in error case with SFTP read packet
  • Fix initialization of DH Size values

(02/03/2021)

• New Feature Additions
  • Added optional builds for not using RSA or ECC making the build more modular for resource constrained situations.
  • MQX IDE build added
  • Command line option added for Agent use with the example client
• Fixes
  • Increase the ID list size for interop with some OpenSSH servers
  • In the case of a network error add a close to any open files with SFTP connection
  • Fix for potential memory leak with agent and a case with wolfSHS_SFTP_GetHandle
  • Fuzzing fix for potential out of bounds read in the public key user auth messages
  • MQX build fixes
  • Sanity check that agent was set before setting the agent’s channel
  • Fuzzing fix for bounds checking with DoKexDhReply internal function
  • Fuzzing fix for clean up of base path with SCP use
  • Fuzzing fix for sanity checks on setting the prime group and generator
  • Fuzzing fix for return result of high water check
  • Fuzzing fix for null terminator in internal ReceiveScpConfirmation function
• Improvements and Optimizations
  • Example timeout added to SFTP example
  • Update wolfSSH_ReadKey_buffer() to handle P-384 and P-521 when reading a key from a buffer
  • Use internal version of strdup
  • Use strncmp instead of memcmp for comparing session string type

(08/31/2020)

• New Feature Additions
  • Added SSH-AGENT support to the echoserver and client
  • For testing purposes, add ability to have named users with authentication type of "none"
  • Added support for building for EWARM
  • Echoserver can now spawn a shell and set up a pty with it
  • Added example to the SCP callback for file transfers without a filesystem
• Fixes
  • Fixes for clean connection shutdown in the example.
  • Fixes for some issues with DH KEX discovered with fuzz testing
  • Fix for an OOB read around the RSA signature
  • Fix for building with wolfSSL v4.5.0 with respect to `wc_ecc_set_rng()`; configure will detect the function's presence and work around it absence; see note in internal.c regarding the flag `HAVE_WC_ECC_SET_RNG` if not using configure
• Improvements and Optimizations
  • Improved interoperability with winSCP
  • Improved interoperability with Dropbear
  • Example client can now authenticate with public keys

(04/28/2020)

• New Feature Additions
  • Added wolfSCP client example
  • Added support for building for VxWorks
• Fixes
  • Fixes for some buffer issues discovered with fuzz testing
  • Fixes for some SCP directory issues in Nucleus
  • Fixed an issue where a buffer size went negative, cosmetic
  • Fixed bug in ECDSA when using alt-ecc-size in wolfCrypt
  • Fixed bug with AES-CTR and FIPSv2 build
  • Fixed bug when using single precision
  • Fix for SCP rename action
• Improvements and Optimizations
  • Improved interoperability with FireZilla
  • Example tool option clarification
  • Better SFTP support in 32-bit environments
  • SFTP and SCP aren't dependent on ioctl() anymore
  • Add password rejection count
  • Public key vs password authentication chosen by user auth callback
  • MQX maintenance

(10/31/2019)

• wolfSFTP port to MQX 4.2 (MQX/MFS/RTCS)
• Maintenance and bug fixes
• Improvements and additions to the test cases
• Fix some portablility between C compilers
• Fixed an issue in the echoserver example where it would error sometimes on shutdown
• Improvement to the global request processing
• Fixed bug in the new keys message handler where it reported the wrong size in the data buffer; invalid value was logged, not used
• Fixed bug in AES initialization that depended on build settings
• Improved interoperability with puTTY
• Added user auth callback error code for too many password failures
• Improvements to the Nucleus filesystem abstraction
• Added example for an "autopilot" file get and file put with the wolfSFTP example client

(08/06/2019)

• GCC 8 build warning fixes
• Fix for warning with enums used with SFTP and set socket type
• Added example server with Renesas CS+ port
• Fix for initializing UserAuthData to all zeros before use
• Fix for SFTP “LS” operation when setting the default window size to 2048
• Add structure size print out option -z to example client when the macro WOLFSSH_SHOW_SIZES is defined
• Additional automated tests of wolfSSH_CTX_UsePrivateKey_buffer and fix for call when key is already loaded
• Refactoring done to internal handling of packet assembly
• Add client side public key authentication support
• Support added for global requests
• Fix for NULL dereference warning, rPad/sPad initialization and SFTP check on want read. Thanks to GitHub user LinuxJedi for the reports
• Addition of WS_USER_AUTH_E error returned when user authentication callback returns WOLFSSH_USERAUTH_REJECTED
• Remove void cast on variable not compiled in with single threaded builds

(04/30/2019)

• SFTP support for time attributes
• TCP port forwarding feature added (--enable-fwd)
• Example tcp port forwarding added to /examples/portfwd/portfwd
• Fixes to SCP, including default direction set
• Fix to match ID during KEX init
• Add check for window adjustment packets when sending large transfers
• Fixes and maintenance to Nucleus port for file closing
• Add enable all option (--enable-all)
• Fix for --disable-inline build
• Fixes for GCC-7 warnings when falling through switch statements
• Additional sanity checks added from fuzz testing
• Refactor and fixes for use with non blocking
• Add extended data read for piping stderr
• Add client side pseudo terminal connection with ./examples/client/client -t
• Add some basic Windows terminal conversions with wolfSSH_ConvertConsole
• Add wolfSSH_stream_peek function to peek at incoming SSH data
• Change name of internal function SendBuffered() to avoid clash with wolfSSL
• Add support for SFTP on Windows
• Use int types for arguments in examples to fix Raspberry Pi build
• Fix for fail case with leading 0’s on MPINT
• Default window size (DEFAULT_WINDOW_SZ) lowered from ~ 1 MB to ~ 16 KB
• Disable examples option added to configure (--disable-examples)
• Callback function and example use added for checking public key sent
• AES CTR cipher support added
• Fix for free’ing ECC caches with examples
• Renamed example SFTP to be examples/sftpclient/wolfsftp

(08/15/2018)

• Accepted code submission from Stephen Casner for SCP support. Thanks Stephen!
• Added SCP server support.
• Added SFTP client and server support.
• Updated the autoconf scripts.
• Other bug fixes and enhancements.

(09/26/2017)

• Added ECDH Group Exchange with SHA2 hashing and curves nistp256, nistp384, and nistp521.
• Added ECDSA with SHA2 hashing and curves nistp256, nistp384, and nistp521.
• Added client support.
• Added an example client that talks to the echoserver.
• Changed the echoserver to allow only one connection, but multiple connections are allowed with a command line option.
• Added option to echoserver to offer an ECC public key.
• Added a Visual Studio solution to build the library, examples, and tests.
• Other bug fixes and enhancements.

(06/16/2017)

• Added DH Group Exchange with SHA-256 hashing to the key exchange.
• Removed the canned banner and provided a function to set a banner string. If no sting is provided, no banner is sent.
• Expanded the make checking to include an API test.
• Added a function that returns session statistics.
• When connecting to the echoserver, hitting Ctrl-E will give you some session statistics.
• Parse and reply to the Global Request message.
• Fixed a bug with client initiated rekeying.
• Fixed a bug with the GetString function.
• Other small bug fixes and enhancements.