Commit Graph

138 Commits

Author SHA1 Message Date
John Crispin
e428d7999a dropbear: add a uci-defaults script for loading authorized keys
Write the ssh authorized key to /etc/dropbear/ssh_authorized_keys if present
inside boad.json.

Signed-off-by: John Crispin <john@phrozen.org>
2024-10-02 15:41:33 +02:00
Christian Marangi
9f6fc4f524
dropbear: don't install /usr/lib/opkg/info in package install
Don't install /usr/lib/opkg/info in package install as it doesn't make
sense and conflicts with APK installations.

Fixes: a377aa9ab5 ("add dropkey ssh keys and config files to the conffiles section (#2014)")
Link: https://github.com/openwrt/openwrt/pull/15543
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
2024-06-11 23:58:17 +02:00
Konstantin Demin
2cd414c33e dropbear: clarify DROPBEAR_MODERN_ONLY option
don't mention SHA1 in order to not confuse users - SHA1 support is already disabled (except RSA-SHA1 signagures).

ref: https://github.com/openwrt/openwrt/issues/15281

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-05-09 19:35:36 +02:00
Konstantin Demin
f230d00e64 dropbear: bump to 2024.85
- update dropbear to latest stable 2024.85;
  for the changes see https://matt.ucc.asn.au/dropbear/CHANGES
- drop cherry-picked patches (merged in release 2024.84)
- refresh remaining patches

Tested-by: Stijn Segers <foss@volatilesystems.org>
Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-05-09 19:35:20 +02:00
Sergey Ponomarev
1d4b88265b
dropbear: use ssh-keygen as an alias for dropbearkey
The DropBear's dropbearkey supports limited set of arguments of
OpenSSH ssh-keygen:  -t, -q -N -Y
After the change you can generate a key with the same command.
Still many features of the original OpenSSH ssh-keygen are absent in
the dropbearkey.
If it's needed then users should install openssh-keygen package that
will replace the /usr/bin/ssh-keygen with the full version.

Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/14174
[ wrap commit description to 80 columns ]
Link: https://github.com/openwrt/openwrt/pull/14174
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
2024-05-06 13:41:43 +02:00
Fabrice Fontaine
289f811abb package/network/services/dropbear: fix PKG_CPE_ID
cpe:/a:dropbear_ssh_project:dropbear_ssh is the correct CPE ID for dropbear:
https://nvd.nist.gov/products/cpe/search/results?keyword=cpe:2.3🅰️dropbear_ssh_project:dropbear_ssh

Fixes: c61a239514 (add PKG_CPE_ID ids to package and tools)

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/15290
Signed-off-by: Robert Marko <robimarko@gmail.com>
2024-04-27 23:43:58 +02:00
Konstantin Demin
3f96246e97 dropbear: better handle interfaces
- introduce 'DirectInterface' option to bind exactly to specified interface;
  fixes #9666 and late IPv4/IPv6 address assignment
- option 'DirectInterface' takes precedence over 'Interface'
- improve interface/address handling,
  e.g. verify count of listening endpoints due to dropbear limit (10 for now)

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
865ae1c10c dropbear: better handle receive window size
- correct maximum receive window size
- adjust receive window size against maximum allowed value
- warn about too high receive window size in syslog

improves f95eecfb

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
05100d8651 dropbear: adjust file permissions
runtime:
- adjust ownership/permissions while starting dropbear
build time:
- correct file permissions for preseed files in $(TOPDIR)/files/etc/dropbear/ (if any)

closes #10849

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
a97e0dad6e dropbear: 'rsakeyfile' -> 'keyfile' transition
end users should have done this since OpenWrt 19.07.
if they didn't do this yet - perform auto-transition.

schedule 'rsakeyfile' removal for next year release.

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
ff1ccd85e8 dropbear: failsafe: handle all supported key types
dropbear may be configured and compiled with support for different host key types

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
55218bcedb dropbear: minor config reorder
move DROPBEAR_ASKPASS under DROPBEAR_DBCLIENT (in all meanings)

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
c87a192386 dropbear: split U2F/FIDO support
these options allow one to configure U2F/FIDO support in more granular way

inspired by upstream commit aa6559db

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
bf900e02c7 dropbear: add option to enable modern crypto only
reduces binary/package size and increases overall performance

also:
- adjust 910-signkey-fix-use-of-rsa-sha2-256-pubkeys.patch
  to build without DROPBEAR_RSA/DROPBEAR_RSA_SHA256

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
88c8053d47 dropbear: adjust allowed shell list
this takes an effect only if getusershell(3) is missing

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
7f6fcaa3bf dropbear: honor CONFIG_TARGET_INIT_PATH
fixes 65256aee

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
2d9a0be307 dropbear: disable two weak kex/mac algorithms
hmac-sha1 and diffie-hellman-group14-sha1 are weak algorithms.
A future deprecation notice of ssh-rsa (2048-bit) has been issued. [1]

It has no place in a potentially internet-facing daemon like dropbear.
Upstream has acknowledged this and offered this solution to disable
these two until this is made to be the default in the next release
of dropbear next year. [2]

1. https://www.openssh.com/txt/release-8.2
2. https://github.com/mkj/dropbear/issues/138

Signed-off-by: John Audia <therealgraysky@proton.me>
Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
0b277f8659 dropbear: minor config clarification
- "default n" is not needed: options are not selected by default
- wrap config on 80 characters width (assuming tab is 8 characters long)
- add feature cost size and security notes for DROPBEAR_AGENTFORWARD
  and DROPBEAR_DBCLIENT_AGENTFORWARD:
  describe why and where it should be disabled

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
fa849fd411 dropbear: better object cleanup
improves b78aae79

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
f2b2293663 dropbear: allow more complex configuration
- switch DB_OPT_COMMON and DB_OPT_CONFIG to comma-separated lists:
  this allows to have values with "|" in DB_OPT_COMMON and DB_OPT_CONFIG
  which is more likely to be than values with commas;
  use $(comma) variable for values with commas.
- sort DB_OPT_COMMON and DB_OPT_CONFIG to have "overrides" on top of list.
- allow DB_OPT_COMMON to have values with commas.
- allow to replace multiline definitions in sysoptions.h.

improves e1bd9645

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
b5cde26048 dropbear: cherry-pick upstream patches
critical fixes:
- libtommath: possible integer overflow (CVE-2023-36328)
- implement Strict KEX mode (CVE-2023-48795)

various fixes:
- fix DROPBEAR_DSS and DROPBEAR_RSA config options
- y2038 issues
- remove SO_LINGER socket option
- make banner reading failure non-fatal
- fix "noremotetcp" behavior
- don't try to shutdown a pty
- fix test for multiuser kernels

adds new features:
- option to bind to interface
- allow inetd with non-syslog
- ignore unsupported command line options with dropbearkey

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
Konstantin Demin
d4dfb566e2 dropbear: bump to 2022.83
- update dropbear to latest stable 2022.83;
  for the changes see https://matt.ucc.asn.au/dropbear/CHANGES
- drop patches:
  - 001-fix-MAX_UNAUTH_CLIENTS-regression.patch
- rework patches:
  - 901-bundled-libs-cflags.patch
- refresh remaining patches

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2024-02-09 09:13:05 +00:00
David Bauer
f95eecfb21 dropbear: increase default receive window size
Increasing the receive window size improves throughout on higher-latency
links such as WAN connections. The current default of 24KB caps out at
around 500 KB/s.

Increasing the receive buffer to 256KB increases the throughput to at
least 11 MB/s.

Signed-off-by: David Bauer <mail@david-bauer.net>
2023-12-28 23:37:51 +01:00
Etienne Champetier
6ac61dead9 dropbear: add ed25519 for failsafe key
At least Fedora and RHEL 9 set RSAMinSize=2048, so when trying to use
failsafe, we get 'Bad server host key: Invalid key length'
To workaround the issue, we can use: ssh -o RSAMinSize=1024 ...

Generating 2048 bits RSA is extremely slow, so add ed25519.
We keep RSA 1024 to be as compatible as possible.

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
2023-07-26 14:00:01 +02:00
Nozomi Miyamori
d728d05c6c dropbear: add ForceCommand uci option
adds ForceCommand option. If the command is specified,
it forces users to execute the command when they log in.

Signed-off-by: Nozomi Miyamori <inspc43313@yahoo.co.jp>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2023-05-20 23:24:50 +02:00
Tianling Shen
48ed07bc0b treewide: replace AUTORELEASE with real PKG_RELEASE
Based on Paul Fertser <fercerpav@gmail.com>'s guidance:
Change AUTORELEASE in rules.mk to:
```
AUTORELEASE = $(if $(DUMP),0,$(shell sed -i "s/\$$(AUTORELEASE)/$(call commitcount,1)/" $(CURDIR)/Makefile))
```

then update all affected packages by:
```
for i in $(git grep -l PKG_RELEASE:=.*AUTORELEASE | sed 's^.*/\([^/]*\)/Makefile^\1^';);
do
	make package/$i/clean
done
```

Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
2023-05-18 11:35:29 +02:00
Andre Heider
07730ff346
treewide: add support for "lto" in PKG_BUILD_FLAGS
This reduces open coding and allows to easily add a knob to enable
it treewide, where chosen packages can still opt-out via "no-lto".

Some packages used LTO, but not the linker plugin. This unifies 'em
all to attempt to produce better code.
Quoting man gcc(1):
"This improves the quality of optimization by exposing more code to the
link-time optimizer."

Also use -flto=auto instead of -flto=jobserver, as it's not guaranteed
that every buildsystem uses +$(MAKE) correctly.

Signed-off-by: Andre Heider <a.heider@gmail.com>
2023-03-21 18:28:22 +01:00
Andre Heider
da3700988d
treewide: add support for "gc-sections" in PKG_BUILD_FLAGS
This reduces open coding and allows to easily add a knob to
enable it treewide, where chosen packages can still opt-out via
"no-gc-sections".

Note: libnl, mbedtls and opkg only used the CFLAGS part without the
LDFLAGS counterpart. That doesn't help at all if the goal is to produce
smaller binaries. I consider that an accident, and this fixes it.

Note: there are also packages using only the LDFLAGS part. I didn't
touch those, as gc might have been disabled via CFLAGS intentionally.

Signed-off-by: Andre Heider <a.heider@gmail.com>
2023-03-21 18:28:22 +01:00
Andre Heider
5c545bdb36
treewide: replace PKG_USE_MIPS16:=0 with PKG_BUILD_FLAGS:=no-mips16
Keep backwards compatibility via PKG_USE_MIPS16 for now, as this is
used in all package feeds.

Signed-off-by: Andre Heider <a.heider@gmail.com>
2023-03-21 18:28:22 +01:00
Konstantin Demin
f98bb1ffe5 dropbear: cherry-pick upstream commit 544f28a0
Resolves #10081

Reported-By: Chen Minqiang <ptpt52@gmail.com>
Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2022-06-27 00:57:15 +02:00
Konstantin Demin
65256aee23 dropbear: bump to 2022.82
- update dropbear to latest stable 2022.82;
  for the changes see https://matt.ucc.asn.au/dropbear/CHANGES
- use $(AUTORELEASE) in PKG_RELEASE
- use https for all uris
- refresh all patches
- rewrite patches:
  - 100-pubkey_path.patch
  - 130-ssh_ignore_x_args.patch

binary/pkg size changes:
- ath79/generic, mips:
  - binary: 215112 -> 219228 (+4116)
  - pkg: 111914 -> 113404 (+1490)
- ath79/tiny, mips:
  - binary: 172501 -> 172485 (-16)
  - pkg: 89871 -> 90904 (+1033)

Tested-by: Stijn Segers <foss@volatilesystems.org>
Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2022-04-09 19:31:31 +02:00
Sven Roederer
5287defa1f dropbear: add config options for agent-forwarding support
* SSH agent forwarding might cause security issues, locally and on the jump
  machine (https://defn.io/2019/04/12/ssh-forwarding/). So allow to
  completely disabling it.
* separate options for client and server
* keep it enabled by default

Signed-off-by: Sven Roederer <devel-sven@geroedel.de>
2021-10-30 16:32:54 +02:00
Fritz D. Ansel
65ee14a118 dropbear: allow to use with xinetd
with xinetd allowed+blocked (ipv6) hosts could be set
what is not possible with stock dropbear package

The file size increased 12 Bytes, so this "opimisation" did not really helped.
Within a compressed storage format it is 0..

ipk: 111.171 -> 111.361 = 190 bytes
bin: 215.128 -> 215.140 =  12 bytes

Signed-off-by: Fritz D. Ansel <fdansel@yandex.ru>
2021-08-21 15:59:39 +02:00
Leonardo Mörlein
b993b68b6c build: introduce $(MKHASH)
Before this commit, it was assumed that mkhash is in the PATH. While
this was fine for the normal build workflow, this led to some issues if

    make TOPDIR="$(pwd)" -C "$pkgdir" compile

was called manually. In most of the cases, I just saw warnings like this:

    make: Entering directory '/home/.../package/gluon-status-page'
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    bash: line 1: mkhash: command not found
    [...]

While these were only warnings and the package still compiled sucessfully,
I also observed that some package even fail to build because of this.

After applying this commit, the variable $(MKHASH) is introduced. This
variable points to $(STAGING_DIR_HOST)/bin/mkhash, which is always the
correct path.

Signed-off-by: Leonardo Mörlein <me@irrelefant.net>
2021-05-13 15:13:15 +02:00
Konstantin Demin
52aa2017d3 dropbear: bump package version
Bump package version after previous changes.

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
[added missing commit description]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
2020-12-11 13:48:24 +01:00
Konstantin Demin
228298290e dropbear: add ssh-askpass support in configuration
binary size cost is much less than 1k.

tested on ath79/generic:
  bin: 215128 -> 215132 (+4b)
  ipk: 111183 -> 111494 (+311b)

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2020-12-11 13:48:24 +01:00
Konstantin Demin
e1bd9645b6 dropbear: roll up recipes into mapping lists
this commit removes manual recipes for options and introduces mapping lists:
- DB_OPT_COMMON holds option mappings which are common for all builds;
- DB_OPT_CONFIG holds option mappings which are depend on config settings.

DB_OPT_COMMON is space-separated list of 'words', each of them is in format:
  'header_option|value'

'header_option' is added with value 'value' to 'localoptions.h'.

if 'header_option' is preceded by two exclamation marks ('!!')
then option is not added to 'localoptions.h' but replaced in 'sysoptions.h'.

in short:
   option|value - add option to localoptions.h
 !!option|value - replace option in sysoptions.h

DB_OPT_CONFIG is space-separated list of 'words', each of them is in format:
  'header_option|config_variable|value_enabled|value_disabled'

'header_option' is handled likewise in DB_OPT_COMMON.

if 'config_variable' is enabled (technically: not disabled)
then 'header_option' is set to 'value_enabled' and 'value_disabled' otherwise.

in short:
   option|config|enabled|disabled = add option to localoptions.h
 !!option|config|enabled|disabled = replace option in sysoptions.h

   option := (config) ? enabled : disabled

If you're not sure that option's value doesn't have '|' within - add your recipe
manually right after '$(Build/Configure/dropbear_headers)' and write some words
about your decision.

PS about two exclamation marks:
early idea was to use one exclamation mark to denote such header options
but then i thought single exclamation mark may be overlooked by mistake.

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2020-12-11 13:48:24 +01:00
Konstantin Demin
79d5c24724 dropbear: rework recipes that configure build
- add two helper functions to avoid mistakes with
  choice of correct header file to work with
- update rules accordingly

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2020-12-11 13:48:24 +01:00
Konstantin Demin
42eff7c7e6 dropbear: reorder options in Configure recipe
put static options at first place, then place configurable options.
also put DROPBEAR_ECC right before DROPBEAR_ECC_FULL to ease maintainance.

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2020-12-11 13:48:24 +01:00
Konstantin Demin
7e122c353a dropbear: enable back DROPBEAR_USE_PASSWORD_ENV
this option was disabled in 2011 and these long nine years showed us that change was definitely wrong.

binary size cost is much less than 1k.

tested on ath79/generic:
  bin: 215128 -> 215128 (no change)
  ipk: 111108 -> 111183 (+75b)

Fixes: 3c801b3dc0 ("tune some more options by default to decrease size")
Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2020-12-11 13:48:24 +01:00
Hans Dedecker
aaf3443e1a dropbear: update to 2.81
Update dropbear to latest stable 2.81; for the changes see https://matt.ucc.asn.au/dropbear/CHANGES

Refresh patches

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2020-11-15 18:23:47 +01:00
Florian Eckert
42675aa30c dropbear: use new extra_command wrapper
Use new `extra_command` wrapper to fix the alignement.

Signed-off-by: Florian Eckert <fe@dev.tdt.de>
2020-11-02 21:32:38 +01:00
Paul Spooren
d0f295837a dropbear: Enable Ed25519 for normal devices
The Ed25519 key pairs are much shorter than RSA pairs and are supported
by default in OpenSSH. Looking at websites explaining how to create new
SSH keys, many suggest using Ed25519 rather than RSA, however consider
the former as not yet widely established. OpenWrt likely has a positive
influence on that development.

As enabling Ed25519 is a compile time option, it is currently not
possible to install the feature via `opkg` nor select that option in an
ImageBuilder.

Due to the size impact of **12kB** the option should only be enabled for
devices with `!SMALL_FLASH`.

This approach seems cleaner than splitting `dropbear` into two packages
like `dropbear` and `dropbear-ed25519`.

Signed-off-by: Paul Spooren <mail@aparcar.org>
2020-09-06 23:19:20 +02:00
Rui Salvaterra
763ce13b0b dropbear: allow disabling support for scp
If not needed, disabling scp allows for a nice size reduction.

Dropbear executable size comparison:

153621 bytes (baseline)
133077 bytes (without scp)

In other words, we trim a total of 20544 bytes.

Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
2020-08-15 20:25:08 +02:00
Rui Salvaterra
e5eeb34a8c dropbear: fix ssh alternative when dbclient isn't built
The ssh symlink was still being created even when dbclient was disabled in the
build configuration. Fix this annoyance.

Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
2020-08-12 21:57:37 +02:00
Petr Štetiar
4e57fd5ada dropbear: make rsa-sha2-256 pubkeys usable again
Upstream in commit 972d723484d8 ("split signkey_type and signature_type
for RSA sha1 vs sha256") has added strict checking of pubkey algorithms
which made keys with SHA-256 hashing algorithm unusable as they still
reuse the `ssh-rsa` public key format. So fix this by disabling the
check for `rsa-sha2-256` pubkeys.

Ref: https://tools.ietf.org/html/rfc8332#section-3
Fixes: d4c80f5b17 ("dropbear: bump to 2020.80")
Tested-by: Russell Senior <russell@personaltelco.net>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
2020-07-07 19:47:24 +02:00
Hans Dedecker
d4c80f5b17 dropbear: bump to 2020.80
- drop patches (applied upstream)
 * 001-backport_GNU_SOURCE-for-random.patch
 * 002-backport-move-GNU_SOURCE-earlier.patch
 * 010-backport-disable-toom-and-karatsuba.patch

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2020-06-30 22:13:46 +02:00
Rui Salvaterra
69ca308673 dropbear: init: replace backticks with $()
This replaces deprecated backticks by more versatile $(...) syntax.

Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
[add commit description]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
2020-06-30 19:01:18 +02:00
Hans Dedecker
751e6ab8e6 dropbear: fix compilation for uClibc
Backport patches which fix compile issue for uClibc-ng :

dbrandom.c:174:8: warning: implicit declaration of function 'getrandom'; did you mean 'genrandom'? [-Wimplicit-function-declaration]
  ret = getrandom(buf, sizeof(buf), GRND_NONBLOCK);
        ^~~~~~~~~
        genrandom
dbrandom.c:174:36: error: 'GRND_NONBLOCK' undeclared (first use in this function); did you mean 'SOCK_NONBLOCK'?
  ret = getrandom(buf, sizeof(buf), GRND_NONBLOCK);
                                    ^~~~~~~~~~~~~
                                    SOCK_NONBLOCK

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2020-06-24 22:36:21 +02:00
Konstantin Demin
29e170dbaa dropbear: bump to 2020.79
- drop patches (applied upstream):
  * 010-backport-change-address-logging.patch
  * 020-backport-ed25519-support.patch
  * 021-backport-chacha20-poly1305-support.patch
- backport patches:
  * 010-backport-disable-toom-and-karatsuba.patch:
    reduce dropbear binary size (about ~8Kb).
- refresh patches.
- don't bother anymore with following config options
  because they are disabled in upstream too:
  * DROPBEAR_3DES
  * DROPBEAR_ENABLE_CBC_MODE
  * DROPBEAR_SHA1_96_HMAC
- explicitly disable DO_MOTD as it was before commit a1099ed:
  upstream has (accidentally) switched it to 0 in release 2019.77,
  but reverted back in release 2020.79.

Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
2020-06-21 21:33:23 +02:00