1.3.8 Release Notes ------------------------ This file contains a description of the major changes to ProFTPD for the 1.3.8 release cycle, from the 1.3.8rc1 release to the 1.3.8 maintenance releases. More information on these changes can be found in the NEWS and ChangeLog files. 1.3.8c ------ + Fixed segfault when TLSOptions StdEnvVars is used in conjunction with an FTPS session. + Properly use all configured ECDSA SSH hostkeys, not just the first configured ECSA SSH hostkey. + Fixed issue with RADIUS authentication when using mod_radius and newer FreeRADIUS, due to BlastRadius mitigation. 1.3.8b ------ + Implemented mitigations for "Terrapin" SSH attack (CVE-2023-48795). 1.3.8a ------ + Fixed builds when using OpenSSL 3.x 1.3.8 ------ + Implement support for the CSID FTP command, from an IETF Draft. + The mod_auth_otp module improperly allowed keyboard-interactive authentication to succeed for users lacking OTP entries. + Changed Directives FSCachePolicy The default value for FSCachePolicy is now "off". 1.3.8rc4 --------- + Ensure that mod_sftp algorithms work properly when OpenSSL 3.x is used. + New Directives SFTPHostKeys This directive for the mod_sftp module can be used to specify the list of SSH host key algorithms that will be presented to clients; see doc/contrib/mod_sftp.html#SFTPHostKeys for more information. + Changed Directives SFTPClientMatch The SFTPClientMatch directive has been expanded to allow setting some SSH algorithms based on the matched client banner, including encryption and signature algorithms. See doc/contrib/mod_sftp.html#SFTPClientMatch for details. SFTPKeyExchanges The mod_sftp module now supports the "curve448-sha512" key exchange algorithm, and the SFTPKeyExchanges directive has been updated accordingly. See doc/contrib/mod_sftp.html#SFTPKeyExchanges. 1.3.8rc3 --------- + Improved consistency/support for name-based virtual hosts. + Support for the AES-GCM ciphers "aes128-gcm@openssh.com" and "aes256-gcm@openssh.com" have been added to mod_sftp. + Support SSH hostkey rotation via OpenSSH "hostkeys-00@openssh.com" and "hostkeys-prove-00@openssh.com" extensions. + Support for the "home-directory" SFTP extenssion. + Support use of PCRE2, rather than PCRE, via the `--enable-pcre2` configure option. + New Directives FactsDefault This directive can be used to explicitly configure the list of "facts" returned, per path, in the MLSD/MLSD FTP responses. See doc/modules/mod_facts.html#FactsDefault for more details. LDAPConnectTimeout When connecting to LDAP servers, use this directive to configure a longer timeout, if necessary. See doc/contrib/mod_ldap.html#LDAPConnectTimeout for more information. + Changed Directives RegexOptions With the additional support for the PCRE2 library, the RegexOptions directive now supports explicitly selecting that as the regex "engine"; see doc/modules/mod_core.html#RegexOptions for details. SFTPCiphers The OpenSSH-specific AES GCM ciphers are now implemented; see doc/contrib/mod_sftp.html#SFTPCiphers. SFTPDigests The OpenSSH-specific Encrypt-Then-MAC (ETM) digests are now supported; see doc/contrib/mod_sftp.html#SFTPDigests. SFTPExtensions homeDirectory The `mod_sftp` module supports the SFTP extension for querying a user's home directory (once the client has authenticated). Use the SFTPExtensions directive to disable support for this extension if necessary. SFTPOptions NoHostkeyRotation The `mod_sftp` module now supports the OpenSSH-specific "hostkey" extensions, for hostkey rotation. Use this option to disable support for those extensions where needed; see doc/contrib/mod_sftp.html#SFTPOptions. SocketOptions ReusePort The SocketOptions directive now support configuring the `SO_REUSEPORT` socket option, for cases where this is useful, such as specific ProFTPD + Docker networking situations. TransferOptions AllowSymlinkUpload In past releases, ProFTPD allows uploads to symlinks; this was inadvertently broken at some point. Such uploading to symlinks is possible once more, using this new TransferOption. See doc/modules/mod_xfer.html#TransferOptions. 1.3.8rc2 --------- + Fix memory disclosure to RADIUS servers by mod_radius (Issue #1284). + PCRE expressions with capture groups were not being handled properly (Issue #1300). + Add support for the libidn2 library, over libidn, for e.g. mod_rewrite mappings (Issue #1286). + Changed Directives RegexOptions Engine The RegexOptions directive now supports explicitly configuring which regular expression "engine" to use, POSIX or PCRE. Thus ProFTPD installations with PCRE support enabled (via the --enable-pcre configure option) can be told to treat all regular expressions as POSIX expressions at run-time. TLSRenegotiate default behavior The TLSRenegotiate directive configures when the mod_tls module requests TLS renegotations on both control and data connections. TLS renegotiations, as a protocol feature, have a long and sordid history of abuse; many TLS libraries/clients no longer implement them, or disable support for renegotiation by default. Thus mod_tls will no longer request TLS renegotations by default now, either. + Developer Notes The generated Make.rules file will now be installed alongside the installed ProFTPD headers. It contains build rules used by third-party modules that use multiple source files. 1.3.8rc1 --------- + Minimum DH parameter size for TLS has been raised from 1024 to 2048. + Passive transfers fail unexpectedly due to use of SO_REUSEPORT socket option (Issue #1171). + Fixed occasional segfaults with FTPS data transfers using TLSv1.3, when session tickets cannot be decrypted (Issue #1063). + Fixed "Corrupted MAC on inptut" errors when SFTP uses the umac-64@openssh.com digest (Issue #1111). + Fixed memory use-after-free issue in mod_sftp which can cause unexpected login/authentication issues. + Fixed speed regression for logins, directory listings when AuthUserFile is used. + ftpasswd now generates SHA256 password hashes by default, rather than MD5. * Set the `OPENSSL_API_COMPAT` API version compatibility macro. We currently set our OpenSSL API version to 1.0.0 and later; code which uses an OpenSSL API earlier than 1.0.0 will cause the build to fail. Use the new `--disable-openssl-api-compat` configure option to disable use of this macro. + Fixed SQL syntax regression for some generated SQL statements (Issue #1149). + Deprecated Directives MultilineRFC2228 This directive has caused many issues unexpectedly, particularly for responses of the FEAT command, and is not necessary. + New Directives ListStyle This directive is used to emit Windows-style directory listings, for compatibility with certain FTP clients. See doc/modules/mod_ls.html#ListStyle for more information. RedisLogFormatExtra This directive supports adding custom key/values to the JSON logging done by the RedisLogOnCommand, RedisLogOnEvent directives. See doc/modules/mod_redis.html#RedisLogFormatExtra for details. + Changed Directives AuthFileOptions SyntaxCheck Syntax checks of configured AuthUserFile, AuthGroupFile can now be performed, at startup time, via this option. See doc/modules/mod_auth_file.html#AuthFileOptions for more information. BanOnEvent MaxLoginAttemptsFromUser The mod_ban module now supports bans for a given user/IP address combination; see Issue #1170 for details. RedisSentinel Support for using TLS when connecting to Redis Sentinels has been implemented; see doc/modules/mod_redis.html#RedisSentinel for details. RedisServer Redis 6.x changed its AUTH command, due to the Redis ACL system, for supporting multiple users. Thus the `RedisServer` directive now takes a username, as well as a password. The Redis server version is auto- detected; the configured username will be ignored for Redis servers older than Redis 6.x. Support for using TLS when connecting to Redis servers has been implemented; see doc/modules/mod_redis.html#RedisServer for details. SFTPKeyExchanges "curve25519-sha256" has been added as an alias/synonym for "curve25519-sha256@libssh.org". TLSCipherSuite TLSv1.3 ciphersuites have different names, and are configured differently in OpenSSL. To support configuration of TLSv1.3 ciphersuites, the `TLSCipherSuite` directive takes an optional protocol specifier; see the documentation for details. TLSOptions Support for the long-deprecated `NoCertRequest` TLSOption has been removed. AllowWeakSecurity TLSOption added, for cases where interacting with "insecure" (by system OpenSSL policy) clients is required; see doc/contrib/mod_tls.html#TLSOptions for more details. Wrap2Tables The mod_wrap2 module now supports including additional files for its allow/deny tables; see Issue #1133. + Developer Notes The new `pr_pool_debug_memory2` function uses a visitor pattern to walk the memory pools, and provides the pool data to the callback via structure, allowing the callback to format/use the memory pool information as needed, including emitting the data as JSON. The "make install" target now will _only_ try to install existing code/binaries, and will no longer attempt to recompile existing binaries. That is, this sequence will no longer work: $ ./configure $ make install Instead, the officially documented and supported sequence is now required: $ ./configure $ make $ make install This ensures that no unexpected recompilation occurs; see Issue #548.