This is only setting something that is default anyways and
prevents sshd from starting if one of the listed methods
is not activated.
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
In order to harden OpenSSH server in IPFire, using the upstream default configuration
and edit it via sed commands in LFS file is error-prone and does not scale.
Thereof we ship a custom and more secure OpenSSH server configuration which
is copied into the image during build time.
The fourth version of this patch disables password authentication by
default, since this is required by some cloud hosters in order to apply
the image. Further, this method is less secure than pubkey
authentication.
Non-AEAD ciphers have been re-added to provide compatibility to older
RHEL systems.
Fixes#11750Fixes#11751
Partially fixes#11538
Signed-off-by: Peter Müller <peter.mueller@link38.eu>
Cc: Marcel Lorenz <marcel.lorenz@ipfire.org>
Cc: Michael Tremer <michael.tremer@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
This parameter was passed to some shell commands without any
sanitisation which allowed an attacker who was authenticated to
the web UI to download arbitrary files from some directories
and delete any file from the filesystem.
References: #11830
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Only set the state of a used rulefile to "on" if it is present in
the %idsrules hash. This happens if it contains at least one rule.
This prevents from showing a rulefile in the ruleset section if, it
does not exist anymore or does not contains any rules at all.
Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>
If an IP-address has been added to the whitelist, any traffic from
this host will not longer inspected by suricata.
Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>
Most of these files still used old dates and/or domain names for contact
mail addresses. This is now replaced by an up-to-date copyright line.
Just some housekeeping... :-)
Signed-off-by: Peter Müller <peter.mueller@link38.eu>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Introduce a custom OpenSSH client configuration file for IPFire.
Some people use it as a jumping host, so applying hardening options
system-wide improves security.
Cryptography setup is the same as for OpenSSH server configuration.
The second version of this patch re-adds some non-AEAD cipher suites
which are needed for connecting to older RHEL systems.
Partially fixes#11751
Signed-off-by: Peter Müller <peter.mueller@link38.eu>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Attempt to detect DNS spoofing attacks by inserting 0x20-encoded
random bits into upstream queries. Upstream documentation claims
it to be an experimental implementation, it did not cause any trouble
on productive systems here.
See https://nlnetlabs.nl/documentation/unbound/unbound.conf/ for
further details.
Signed-off-by: Peter Müller <peter.mueller@link38.eu>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
By default, Unbound neither keeps track of the number of unwanted
replies nor initiates countermeasures if they become too large (DNS
cache poisoning).
This sets the maximum number of tolerated unwanted replies to
1M, causing the cache to be flushed afterwards. (Upstream documentation
recommends 10M as a threshold, but this turned out to be ineffective
against attacks in the wild.)
See https://nlnetlabs.nl/documentation/unbound/unbound.conf/ for
details. This version of the patch uses 1M as threshold instead of
5M and supersedes the first and second version.
Signed-off-by: Peter Müller <peter.mueller@link38.eu>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Embed the IPFire background image into the redirect template
directly via CSS instead of loading it from somewhere else.
This is necessary because of Content Security Policy (CSP).
This patch inserts the base64 encoded image during build so
nothing needs to be updated twice in case background image
changes.
It supersedes first to fourth version of this patch and has
been successfully tested during a clean build.
Fixes#11650
Signed-off-by: Peter Müller <peter.mueller@link38.eu>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
As default show the events generated by suricata and if
for a certain selected date no suricata log is available
try to fall-back to read the events from the old snort
alert files (if available).
Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>
Enable and specify the path to the threshold-file in the suricata.yaml,
otherwise the programm is trying to read it from a build-in default
location and prints the following error message:
Error opening file: "/etc/suricata//threshold.config": No such file or directory
Fixes#11837.
Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>
Now all oinkmaster related config files and suricata
related yaml files in "/var/ipfire/suricata/" will be
included into the backups.
Also the entire ruleset is part of the backup, so after a
backup has been restored, the IDS can be used in the same way
as before.
Fixes#11835.
Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>
Create this file on first execution of the script if it does not exist yet.
This will allow suricata to imediately be started. Otherwise the ruleset has
to be downloaded and configured before this file has been created and suricata
could be launched.
Fixes#11833.
Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>
Change the get_memory_usage() function to grab and return the
memory usage of the entire process, containing all sub-processes and
threads.
Fixes#11821
Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>
