2019.77 - 23 March 2019 - Fix server -R option with ECDSA - only advertise one key size which will be accepted. Reported by Peter Krefting, 2018.76 regression. - Fix server regression in 2018.76 where multiple client -R forwards were all forwarded to the first destination. Reported by Iddo Samet. - Make failure delay more consistent to avoid revealing valid usernames, set server password limit of 100 characters. Problem reported by usd responsible disclosure team - Change handling of failed authentication to avoid disclosing valid usernames, CVE-2018-15599. - Fix dbclient to reliably return the exit code from the remote server. Reported by W. Mike Petullo - Fix export of 521-bit ECDSA keys, from Christian Hohnstädt - Add -o Port=xxx option to work with sshfs, from xcko - Merged fuzzing code, see FUZZER-NOTES.md - Add a DROPBEAR_SVR_MULTIUSER=0 compile option to run on single-user Linux kernels (CONFIG_MULTIUSER disabled). From Patrick Stewart - Increase allowed username to 100 characters, reported by W. Mike Petullo - Update config.sub and config.guess, should now work with RISC-V - Cygwin compile fix from karel-m - Don't require GNU sed (accidentally in 2018.76), reported by Samuel Hsu - Fix for IRIX and writev(), reported by Kazuo Kuroi - Other fixes and cleanups from François Perrad, Andre McCurdy, Konstantin Demin, Michael Jones, Pawel Rapkiewicz 2018.76 - 27 February 2018 > > > Configuration/compatibility changes IMPORTANT Custom configuration is now specified in localoptions.h rather than options.h Available options and defaults can be seen in default_options.h To migrate your configuration, compare your customised options.h against the upstream options.h from your relevant version. Any customised options should be put in localoptions.h in the build directory. - "configure --enable-static" should now be used instead of "make STATIC=1" This will avoid 'hardened build' flags that conflict with static binaries - Set 'hardened build' flags by default if supported by the compiler. These can be disabled with configure --disable-harden if needed. -Wl,-pie -Wl,-z,now -Wl,-z,relro -fstack-protector-strong -D_FORTIFY_SOURCE=2 # spectre v2 mitigation -mfunction-return=thunk -mindirect-branch=thunk Spectre patch from Loganaden Velvindron - "dropbear -r" option for hostkeys no longer attempts to load the default hostkey paths as well. If desired these can be specified manually. Patch from CamVan Nguyen - group1-sha1 key exchange is disabled in the server by default since the fixed 1024-bit group may be susceptible to attacks - twofish ciphers are now disabled in the default configuration - Default generated ECDSA key size is now 256 (rather than 521) for better interoperability - Minimum RSA key length has been increased to 1024 bits > > > Other features and fixes - Add runtime -T max_auth_tries option from Kevin Darbyshire-Bryant - Add 'dbclient -J &fd' to allow dbclient to connect over an existing socket. See dbclient manpage for a socat example. Patch from Harald Becker - Add "-c forced_command" option. Patch from Jeremy Kerr - Restricted group -G option added with patch from stellarpower - Support server-chosen TCP forwarding ports, patch from houseofkodai - Allow choosing outgoing address for dbclient with -b [bind_address][:bind_port] Patch from houseofkodai - Makefile will now rebuild object files when header files are modified - Add group14-256 and group16 key exchange options - curve25519-sha256 also supported without @libssh.org suffix - Update bundled libtomcrypt to 1.18.1, libtommath to 1.0.1 This fixes building with some recent versions of clang - Set PAM_RHOST which is needed by modules such as pam_abl - Improvements to DSS and RSA public key validation, found by OSS-Fuzz. - Don't exit when an authorized_keys file has malformed entries. Found by OSS-Fuzz - Fix null-pointer crash with malformed ECDSA or DSS keys. Found by OSS-Fuzz - Numerous code cleanups and small issues fixed by Francois Perrad - Test for pkt_sched.h rather than SO_PRIORITY which was problematic with some musl platforms. Reported by Oliver Schneider and Andrew Bainbridge - Fix some platform portability problems, from Ben Gardner - Add EXEEXT filename suffix for building dropbearmulti, from William Foster - Support --enable-