Aaron Rainbolt
1708a03e1e
Enable umask hardening
2024-11-28 15:39:59 -06:00
Aaron Rainbolt
690e8dd826
Avoid faillock lock/tally reset on reboot or timeout
2024-10-19 23:52:51 -05:00
Patrick Schleizer
86f91e3030
revert umask 027 by default
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because broken because this also happens for root while it should not
https://github.com/Kicksecure/security-misc/issues/185
2024-01-06 09:11:54 -05:00
Patrick Schleizer
b85d48eb83
do not change default umask for root
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since this causes permission issues in `/etc/`
https://github.com/Kicksecure/security-misc/pull/151
2023-11-03 10:31:59 -04:00
Patrick Schleizer
07540db90d
Revert "Revert "set default umask to 027""
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This reverts commit f8913ceb2e
2023-11-03 09:45:12 -04:00
Patrick Schleizer
f8913ceb2e
Revert "set default umask to 027"
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This reverts commit cd216095eb
2023-11-03 09:43:44 -04:00
Patrick Schleizer
cd216095eb
set default umask to 027
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using package libpam-umask
https://www.debian.org/doc/manuals/securing-debian-manual/ch04s11.en.html#id-1.5.14.19
https://github.com/Kicksecure/security-misc/pull/151
2023-11-03 09:12:24 -04:00
Patrick Schleizer
be8c10496f
fix faillock implementation
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dovecot / ssh are exempted
2021-09-01 15:55:53 -04:00
Patrick Schleizer
582492d6d8
port from pam_tally2 to pam_faillock
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since pam_tally2 was deprecated upstream
2021-08-10 17:13:00 -04:00
Patrick Schleizer
2bf0e7471c
port from pam_tally2 to pam_faillock
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since pam_tally2 was deprecated upstream
2021-08-10 15:11:01 -04:00
Patrick Schleizer
2aea74bd71
renamed: usr/libexec/security-misc/pam_tally2-info -> usr/libexec/security-misc/pam-info
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renamed: usr/libexec/security-misc/pam_tally2_not_if_x -> usr/libexec/security-misc/pam_faillock_not_if_x
renamed: usr/share/pam-configs/tally2-security-misc -> usr/share/pam-configs/faillock-security-misc
2021-08-10 15:06:04 -04:00
Patrick Schleizer
50bdd097df
move /usr/lib/security-misc to /usr/libexec/security-misc as per lintian FHS
2021-08-03 12:56:31 -04:00
Patrick Schleizer
9622f28e25
skip counting failed login attempts from dovecot
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Failed dovecot logins should not result in account getting locked.
revert "use pam_tally2 only for login"
2021-01-27 05:49:34 -05:00
Patrick Schleizer
6757104aa4
use pam_tally2 only for login
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to skip counting failed login attempts over ssh and mail login
2021-01-24 05:04:48 -05:00
Patrick Schleizer
300f010fc2
increase priority of pam-abort-on-locked-password-security-misc
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since it has its own user help output
so it shows before pam tally2 info
to avoid duplicate non-applicable help text
2019-12-12 09:29:00 -05:00
Patrick Schleizer
729fa26eca
use pam_acccess only for /etc/pam.d/login
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remove "Allow members of group 'ssh' to login."
remove "+:ssh:ALL EXCEPT LOCAL"
2019-12-12 09:00:08 -05:00
Patrick Schleizer
c192644ee3
security-misc /usr/share/pam-configs/permission-lockdown-security-misc is no longer required, removed.
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Thereby fix apparmor issue.
> Dec 08 09:47:50 host audit[3232]: AVC apparmor="DENIED" operation="exec" profile="/usr/bin/whonixcheck" name="/usr/lib/security-misc/permission-lockdown" pid=3232 comm="sudo" requested_mask="x" denied_mask="x" fsuid=0 ouid=0
> Dec 08 09:47:50 host sudo[3232]: pam_exec(sudo:session): execve(/usr/lib/security-misc/permission-lockdown,...) failed: Permission denied
It is no longer required, because...
existing linux user accounts:
* Get permission lock down because security-misc `debian/security-misc.postinst` calls `/usr/lib/security-misc/permission-lockdown`.
new linux user accounts (created at first boot):
* security-misc `/usr/share/pam-configs/mkhomedir-security-misc` pam mkhomedir sets secure permissions using `umask=027`.
2019-12-08 05:21:35 -05:00
Patrick Schleizer
c7c65fe4e7
higher priority usr/share/pam-configs/tally2-security-misc
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so it can give info before pam stack gets aborted by other pam modules
2019-12-08 03:15:53 -05:00
Patrick Schleizer
19cc6d7555
pam description
2019-12-08 02:10:43 -05:00
Patrick Schleizer
b871421a54
usr/share/pam-configs/console-lockdown -> usr/share/pam-configs/console-lockdown-security-misc
2019-12-08 01:57:43 -05:00
Patrick Schleizer
6479c883bf
Console Lockdown.
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Allow members of group 'console' to use tty1 to tty7. Everyone else except
members of group 'console-unrestricted' are restricted from using console
using ancient, unpopular login methods such as using /bin/login over networks,
which might be exploitable. (CVE-2001-0797)
Not enabled by default in this package since this package does not know which
users shall be added to group 'console'.
In new Whonix builds, user 'user" will be added to group 'console' and
pam console-lockdown enabled by package anon-base-files.
/usr/share/pam-configs/console-lockdown
/etc/security/access-security-misc.conf
https://forums.whonix.org/t/etc-security-hardening/8592
2019-12-07 05:40:20 -05:00
Patrick Schleizer
aa5451c8cd
Lock user accounts after 50 rather than 100 failed login attempts.
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https://forums.whonix.org/t/how-strong-do-linux-user-account-passwords-have-to-be-when-using-full-disk-encryption-fde-too/7698/19
2019-11-25 01:39:53 -05:00
Patrick Schleizer
03e8023847
output
2019-11-22 14:11:30 -05:00
Patrick Schleizer
0ae5c5ff14
remove umask changes since these are causing issues are are not needed anymore
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thanks to home folder permission lockdown
https://forums.whonix.org/t/change-default-umask/7416/45
2019-08-24 12:14:22 -04:00
Patrick Schleizer
41b2819ec8
PAM: abort on locked password
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to avoid needlessly bumping pam_tally2 counter
https://forums.whonix.org/t/restrict-root-access/7658/1
2019-08-17 10:33:47 +00:00
Patrick Schleizer
ed90d8b025
change default umask to 027
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as per:
https://forums.whonix.org/t/change-default-umask/7416/47
2019-08-17 09:55:20 +00:00
Patrick Schleizer
ff9bc1d7ea
informational output during PAM:
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* Show failed and remaining password attempts.
* Document unlock procedure if Linux user account got locked.
* Point out, that there is no password feedback for `su`.
* Explain locked (root) account if locked.
* /usr/share/pam-configs/tally2-security-misc
* /usr/lib/security-misc/pam_tally2-info
2019-08-15 13:37:28 +00:00
Patrick Schleizer
454e135822
pam_tally2.so even_deny_root
2019-08-15 07:33:41 +00:00
Patrick Schleizer
63b476221c
use requisite rather than required to avoid asking for password needlessly
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if login will fail anyhow
2019-08-15 07:30:56 +00:00
Patrick Schleizer
8fdc77fed5
output to stdout
2019-08-14 10:33:23 +00:00
Patrick Schleizer
15094cab4f
avoid ' character in usr/share/pam-configs; in description
2019-08-14 09:36:30 +00:00
Patrick Schleizer
97d1945e61
no log needed, informative output to stdout instead
2019-08-14 09:32:58 +00:00
Patrick Schleizer
a085d46c56
change priories so "pam_umask.so usergroups umask=006" runs before pam_exec.so /usr/lib/security-misc/permission-lockdown
2019-08-14 09:31:58 +00:00
Patrick Schleizer
ce06fdf911
formatting
2019-08-14 05:15:53 -04:00
Patrick Schleizer
21489111d1
run permission lockdown during pam
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https://forums.whonix.org/t/change-default-umask/7416
2019-08-14 08:34:03 +00:00
Patrick Schleizer
52df8dc014
optional pam_umask.so usergroups umask=006
2019-08-14 07:37:21 +00:00
Patrick Schleizer
2f37a66fd0
description
2019-08-11 10:31:29 +00:00
Patrick Schleizer
e83ec79a25
enable usr/share/pam-configs/mkhomedir-security-misc by default
2019-08-11 10:30:51 +00:00
Patrick Schleizer
1eb806a03e
pam_mkhomedir.so umask=006
2019-08-11 10:29:49 +00:00
Patrick Schleizer
c50eb3c9b0
add usr/share/pam-configs/mkhomedir-security-misc based on
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/usr/share/pam-configs/mkhomedir
2019-08-11 10:28:55 +00:00
Patrick Schleizer
a2fa18c381
pam_tally2.so deny=100
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during testing, due to issues
d17e25272bhttps://forums.whonix.org/t/how-strong-do-linux-user-account-passwords-have-to-be-when-using-full-disk-encryption-fde-too/7698/12
2019-08-10 07:07:28 -04:00
Patrick Schleizer
d17e25272b
effectively (not directly) add "required pam_tally2.so debug" to /etc/pam.d/common-account
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This is required because otherwise something like "sudo bash" would count as a
failed login for pam_tally2 even though it was successful.
https://bugzilla.redhat.com/show_bug.cgi?id=707660
https://forums.whonix.org/t/restrict-root-access/7658
2019-08-10 06:06:39 -04:00
Patrick Schleizer
0f896a9d8d
add onerr=fail audit to pam_tally2
2019-08-10 06:05:37 -04:00
Patrick Schleizer
e076470f68
renamed: usr/share/pam-configs/usergroups -> usr/share/pam-configs/usergroups-security-misc
2019-08-01 11:04:58 +00:00
Patrick Schleizer
830111e99a
split usr/share/pam-configs/security-misc
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into
usr/share/pam-configs/tally2-security-misc
usr/share/pam-configs/wheel-security-misc
2019-08-01 11:04:22 +00:00
Patrick Schleizer
89d32402b2
fix, do not use "," inside /usr/share/pam-configs files
2019-07-31 14:52:29 -04:00
Patrick Schleizer
cf90668756
lock user accounts after 5 failed authentication attempts using pam_tally2
2019-07-31 03:25:02 -04:00
Patrick Schleizer
3e29761560
debug at the end
2019-07-31 03:17:06 -04:00
Patrick Schleizer
5cdb3edb32
usr/share/pam-configs/wheel -> usr/share/pam-configs/security-misc
2019-07-31 03:16:41 -04:00
Patrick Schleizer
3f9437f1ec
Revert "set back to default group "root" rather than group "sudo" membership required to use su"
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This reverts commit 2f276cdb10
2019-07-17 14:25:19 -04:00
