As security precaution and to limit the attack surface based on
the version reported by tools like nmap mask out the dropbear
version so the version is not visible anymore by snooping on the
wire. Version is still visible by 'dropbear -V'
Based on a patch by Hans Dedecker <dedeckeh@gmail.com>
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
Signed-off-by: Felix Fietkau <nbd@nbd.name> [remove trailing _]
Don't expose dnsmasq version & other data to clients via the *.bind
pseudo domain. This uses a new 'NO_ID' compile time option which has been
discussed and submitted upstream.
This is an alternate to replacing version with 'unknown' which affects
the version reported to syslog and 'dnsmasq --version'
Run time tested with & without NO_ID on Archer C7 v2
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
Regression introduced by 3481d0d dnsmasq: run as dedicated UID/GID
dnsmasq is unable to remove its own pidfile as /var/run/dnsmasq is owned
by root and now dnsmasq runs as dnsmasq:dnsmasq. Change directory
ownership to match.
dnsmasq initially starts as root, creates the pidfile, then drops to
requested non-root user. Until this fix dnsmasq had insufficient
privilege to remove its own pidfile.
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
PPP daemon can be put into persist mode meaning the
daemon will not exit after a connection gets terminated
but will instead try to reopen the connection.
The re-initiation after the link has been terminated
can be controlled via holdoff; this is helpfull in
scenarios where a BRAS is in denial of service mode
due to link setup requests after a BRAS has gone down
Following uci parameters have been added :
persist (boolean) : Puts the ppp daemon in persist mode
maxfail (integer) : Number of consecutive fail attempts which
puts the PPP daemon in exit mode
holdoff (interget) : Specifies how many seconds to wait
before re-initiating link setup after it has been terminated
Signed-off-by: Alin Nastac <alin.nastac@gmail.com>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
* Only parse interfaces that are up during init_config (as the
script depends on this to determine the proper IP/subnet range)
* Add reload interface triggers for samba-designated interfaces
* Force full service restart upon config change to ensure Samba
binds to new interfaces (sending HUP signal doesn't work)
* Rename "interface" variable to "samba_iface" and move into
global scope
Needed to fix Samba connectivity for clients connecting from a
different LAN subnet (e.g. pseudobridge configurations) due to the
'bind interfaces only' setting.
Signed-off-by: Conn O'Griofa <connogriofa@gmail.com>
- Security: Message printout was vulnerable to format string injection.
If specific usernames including "%" symbols can be created on a system
(validated by getpwnam()) then an attacker could run arbitrary code as root
when connecting to Dropbear server.
A dbclient user who can control username or host arguments could potentially
run arbitrary code as the dbclient user. This could be a problem if scripts
or webpages pass untrusted input to the dbclient program.
- Security: dropbearconvert import of OpenSSH keys could run arbitrary code as
the local dropbearconvert user when parsing malicious key files
- Security: dbclient could run arbitrary code as the local dbclient user if
particular -m or -c arguments are provided. This could be an issue where
dbclient is used in scripts.
- Security: dbclient or dropbear server could expose process memory to the
running user if compiled with DEBUG_TRACE and running with -v
The security issues were reported by an anonymous researcher working with
Beyond Security's SecuriTeam Secure Disclosure www.beyondsecurity.com/ssd.html
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
RADIUS accounting can be used even when RADIUS authentication is not
used. Move the accounting configuration outside of the EAP-exclusive
sections.
Signed-off-by: Petko Bordjukov <bordjukov@gmail.com>
multiple invocation of dnsmasq script (e.g. by procd and hotplugd)
might cause procd to restart dnsmasq with an incomplete config file.
Config file generation might take quite a long time on larger configs
due ubus calls for each listening interface...
Signed-off-by: Ulrich Weber <ulrich.weber@riverbed.com>
Removed socket options = TCP_NODELAY IPTOS_LOWDELAY
TCP_NODELAY (disables Nagle algorithm) is default since samba2.
IPTOS_LOWDELAY sets DSCP 0x10 coding (CS2)
The alternate IPTOS_THROUGHPUT sets DSCP 0x08 coding (CS1)
CS1 is a scavenger class, whilst CS2 is more OAM/interactive
(SNMP,SSH,syslog)
Using CS2 is definitely an abuse of DSCP classification, CS1 less so
however even if the ISP takes note of DSCP codings having a default that
sets traffic to CS2 is wrong. Better to use the default Best Effort
class.
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
Move logging command line option to uci:
option verbose [0]/1/2 - mono-syllabic/verbose/noisy
Previously handled as 'OPTIONS' in .init script however variable
was ignored so never worked.
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
Removed some options which are default anyway and added bind interfaces
only which causes the interfaces line to actually have an effect. Can be
verified with netstat.
Signed-off by: Rosen Penev <rosenp@gmail.com>
By default dnsmasq uses the time function; which returns the time since
Epoch; to retrieve the current time. On boards which have no realtime
clock this can lead to side effects when the time is synced via ntp
as the "time wrap" forces dhcp leases to be considered as expired.
By enabling the broken realtime clock build switch dnsmasq uses the
times utility which returns the number of clock tick.
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
[Jo-Philipp Wich: change symbol name, add sym to PKG_CONFIG_DEPENDS]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Upstream OpenSSL hardening work introduced a change in shared code that
causes polarssl / mbedtls builds to break when no --tls-cipher is specified.
Import the upstream fix commit as patch until the next OpenVPN release gets
released and packaged.
Reported-by: Sebastian Koch <seb@metafly.info>
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
With the addition of /etc/os-release patching lldpd to use
/etc/openwrt_release and to have the initscript use
/etc/openwrt_release and/or /etc/openwrt_version becomes
unnecessary.
Signed-off-by: Daniel Dickinson <lede@daniel.thecshore.com>
Change dnsmasq's dnssec time check handling to use time validity
indicated by ntpd rather than maintaining a cross boot/upgrade
/etc/dnsmasq.time timestamp file. This saves flash device wear.
If ntpd client is configured in uci and you're using dnssec, then
dnsmasq will not check dnssec timestamp validity until ntpd hotplug
indicates sync via a stratum change. The ntpd hotplug leaves a status
flag file to indicate to dnsmasq.init that time is valid and that it
should now start in 'check dnssec timestamp valid' mode.
If ntpd client is not configured and you're using dnssec, then it is
presumed you're using an alternate time sync mechanism and that time is
correct, thus dnsmasq checks dnssec timestamps are valid from 1st start.
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
V2 - stratum & step ntp changes indicate time is valid
V3 - on initial flag file step signal dnsmasq with SIGHUP if running
V4 - only accept step ntp changes. Accepting both stratum & step could
result in unpleasant script race conditions
V5 - Actually only accepting stratum is the correct thing to do after
further testing
V6 - improve handling of non busybox ntpd
if sysntpd not executable
dnsmasq checks dnssec timestamps
else
sysntp script disabled - look for timestamp file - allows external mechanism to use hotplug flag file
sysntp script enabled & uci ntp enabled - look for timestamp file
sysntp script enabled & uci ntp disabled - dnsmasq checks dnssec
timestamps
fi
In company networks everything except the http and https protocol is
often causes problems, because the network administrators try to block
everything else. To make it easier to use LEDE in company networks use
the https/http protocol for git access when possible.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Add support for hostid dhcp config entry to dnsmasq. This allows
specification of dhcpv6 hostid suffix and works in the same way as
odhcpd.
Entries in auto generated dnsmasq.conf should conform to:
dhcp-host=mm:mm:mm:mm:mm:mm,IPv4addr,[::V6su:ffix],hostname
example based on sample config/dhcp entry:
config host
option name 'Kermit'
option mac 'E0:3F:49:A1:D4:AA'
option ip '192.168.235.4'
option hostid '4'
dhcp-host=E0:3F:49:A1:D4:AA,192.168.235.4,[::0:4],Kermit
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
By default dnsmasq uses random ports for outbound dns queries;
when the maxport UCI option is specified the ports used will
always be smaller than the specified value.
This is usefull for systems behind firewalls.
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
Currently, the uci data model does not provide support for specifying
the minimum TLS version supported in an OpenVPN instance (be it server
or client).
This patch adds support for writing the relevant option to the openvpn
configuration file at service startup.
Signed-off-by: Matteo Panella <morpheus@level28.org>
[Jo-Philipp Wich: shorten commit title, bump pkg release]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Fix a „semantic typo“ introduced in b78aae793e,
where TARGET_INIT_PATH was used instead of CONFIG_TARGET_INIT_PATH.
Signed-off-by: Dario Ernst <Dario.Ernst@riverbed.com>
Kevin Darbyshire-Bryant
Felix Fietkau
Johannes Römer
Karl Palsson
Magnus Kroken
Ash Benz
Hans Dedecker
Conn O'Griofa
Jo-Philipp Wich
Petko Bordjukov
Ulrich Weber
neheb
Hans Dedecker
Daniel Dickinson
Hauke Mehrtens
Michal Hrusecky
John Crispin
Matteo Panella
Dirk Neukirchen
Dario Ernst