Commit Graph

1384 Commits (7c63eb23784b5de4d65fd77347bae68f0164e75b)

Author SHA1 Message Date
root 7c63eb2378 In the CentOS7 and epel environment, result of "firewall-cmd -direct -get -chains ipv4 filter" is displayed one line
Changed to be multiple lines with reference to firewallcmd-multiport.conf
2017-12-09 15:55:45 +01:00
sebres 6ccaa03e00 action.d/firewallcmd-ipset.conf: extended with actionflush to bulk unban resp. flush ipset 2017-12-06 01:10:56 +01:00
sebres 2712f72650 Merge remote-tracking branch 'master' into 0.10 2017-12-06 00:09:52 +01:00
sebres e384acca5f action.d/firewallcmd-ipset.conf: fixed create of set for ipv6 (missing `family inet6`) 2017-12-05 23:34:03 +01:00
Kevin Maradona 6c705d572b filter.d/nginx-limit-req.conf: nginx limit-req log-level can be set to warn or error therefore having this regex will include both of them. 2017-12-05 22:31:54 +01:00
sebres ffd6b9f6de jail.conf: extended with new parameter `mode` for the filters supporting it; 2017-12-05 16:09:18 +01:00
sebres 2b68882502 filter.d/exim.conf: provides mode "aggressive" to ban flood resp. DDOS-similar failures;
Closes #1983
2017-12-05 16:07:53 +01:00
sebres 7f89fbc33f Merge remote-tracking branch 'remotes/gh-upstream/master' into 0.10 2017-12-01 15:53:11 +01:00
Serg G. Brester 4f63180611
Avoid injection using quotes after `auth` command;
Added non-greedy fallback for quoted something (with lookahead simulated possessive greedy catch of non-quoted parts `[^"]*(?=")`).
Note that because host-info's are hereafter (with foreign input in-between), we would not use greedy or non-greedy catch-alls (`.*` or `.*?`) here (preventing performance losses).
2017-11-30 12:32:24 +01:00
Serg G. Brester f59df2e156
Avoid any injecting on protocol (e. g. tries using camel-case)
The phrase "AUTH command used when not advertised" is precise enough as anchor here, so prevent by any foreign-input (any auth protocol error).
2017-11-29 20:55:48 +01:00
Peter Nowee aa158ac05f
Exim failregex: Include lower/mixed case AUTH
When reporting the error `AUTH command used when not advertised`, Exim
starts with `SMTP protocol error in "........."`. Here, Exim logs the
SMTP command as it was provided by the connecting client.
https://github.com/Exim/exim/blob/exim-4_89+fixes/src/src/smtp_in.c#L2850

According to RFC 5321 (SMTP) "[..] a command verb [..] MAY be encoded
in upper case, lower case, or any mixture of upper and lower case with
no impact on its meaning."
https://tools.ietf.org/html/rfc5321#section-2.4

Lower case `auth login` brute-force attempts were seen in the wild and
were not caught by the current failregex.

This commit makes the failregex case-insensitive for the `AUTH`
command, so that lower case (`auth`) or mixed case (`aUtH`) now also
match. The failregex was already case-insensitive for the command
arguments (e.g. `AUTH login` already matched).
2017-11-29 15:14:43 +01:00
SlowRiot 660d57e6ba updating my email address 2017-11-29 10:43:15 +01:00
sebres 76f2865883 implemented new action "action.d/nginx-block-map.conf", used in order to ban not IP-related tickets via nginx (session blacklisting in nginx-location with map-file); 2017-11-28 13:42:41 +01:00
sebres f31195a4fc added new logtarget "SYSOUT" to log from fail2ban working in foreground as systemd-service (in opposite to "STDOUT" don't log time-stamps). 2017-11-26 23:03:29 +01:00
sebres 159957ab88 filter.d/sshd.conf: extended failregex for modes "extra"/"aggressive": now finds all possible (also future) forms of "no matching (cipher|mac|MAC|compression method|key exchange method|host key type) found", see "ssherr.c" for all possible SSH_ERR_..._ALG_MATCH errors;
obsolete (multi-line buffered) variant extended also.

Closes gh-1943, gh-1944
2017-11-23 22:21:42 +01:00
sebres 7e756da2b9 Merge remote-tracking branch 'remotes/gh-upstream/master' into 0.10 2017-11-06 18:56:31 +01:00
sebres eba68a8f37 config/paths-common.conf: Added initial values for `syslog_authpriv`, `syslog_mail` in order to avoid errors while parsing/interpolating configuration;
Note the systemd-backend does not need the logpath at all;
Some defaults normalized (minimized configs, don't need to overwrite values in distribution-related path if equal).
2017-11-03 14:15:07 +01:00
Serg G. Brester 9876dd44f9 replace port imap3 with imap everywhere, since imap3 is not a standard port and old rarely (if ever) used and missing on some systems
(see gh-1942)
2017-11-03 14:03:06 +01:00
Jeff Potter 4a2fc8b7e8 Include imap (port 143) in courier-auth ports
imap was missing from the list of ports, preventing fail2ban from blocking connections on standard IMAP port 143.
2017-11-03 14:01:19 +01:00
sebres b615a98540 jail.conf: avoid overwriting of default value of the parameter `chain` of several actions (where default chain != INPUT);
test-cases extended to cover the same logic (use `<known/chain>` instead of fix value `INPUT`);
Closes gh-1949
2017-10-30 13:32:52 +01:00
Serg G. Brester e07a8cda07 Update jail.conf
Documentation of parameters for action blocklist_de, closes gh-1940
2017-10-27 15:26:17 +02:00
Serg G. Brester 1a8fb6290d Merge pull request #1926 from sebres/0.10-pf-actionflush
action.d/pf.conf: wildcard anchoring example + bulk-unban with command `actionflush`
2017-10-19 16:35:46 +02:00
sebres 0e66e3cc57 Merge branch 'master' into 0.10
# Conflicts:
#	config/filter.d/asterisk.conf
2017-10-18 19:00:23 +02:00
Michael Newton d5d1fe679f Remove invalid regex
Resolves #1927
2017-10-17 14:44:23 -07:00
sebres a1b863fcf6 action.d/pf.conf: extended with bulk-unban, command `actionflush` in order to flush all bans at once (by stop jail, resp. shutdown of fail2ban) 2017-10-17 20:12:48 +02:00
sebres 8726c9fb0a pf.conf: enclose ports in braces, multiple ports expecting this syntax `... any port {http, https}`.
Note this would be backwards-incompatible change (for the people already enclosing multiports in braces in jail.local).
closes gh-1915
2017-10-17 13:46:29 +02:00
Łukasz Wąsikowski a4f94d2619 Update pf.conf
Fix comment, because current one won't work:

cat /etc/pf.conf
anchor f2b {
  sshd
}

# service pf reload
Reloading pf rules.
/etc/pf.conf:2: syntax error

New version:

cat /etc/pf.conf
anchor f2b {
  anchor sshd
}

# service pf reload
Reloading pf rules.
2017-10-17 12:39:25 +02:00
Harry Wood ea1b663f85 typo
spell "positive" (...but also somebody should finish this sentence)
2017-10-16 01:15:58 +01:00
sebres e71f16f6ba Merge branch 'master' into 0.10
# Conflicts resolved:
#	config/filter.d/dovecot.conf
2017-10-04 09:57:18 +02:00
sebres ea36e1b3fc filter.d/dovecot.conf: fixed failregex to recognize pam_authenticate failures with "Permission denied" (gh-1897) 2017-10-04 09:55:37 +02:00
sebres 8c804a2290 Merge branch 'master' into 0.10
# Conflicts resolved:
#	config/filter.d/postfix-rbl.conf
#	config/filter.d/postfix-sasl.conf
#	config/filter.d/postfix.conf
#	fail2ban/tests/files/logs/postfix-sasl
2017-10-02 15:41:30 +02:00
sebres a2120a9de5 filter.d/postfix-*.conf - added optional port regex (closes gh-1902) 2017-10-02 15:31:55 +02:00
Louis Sautier 152c9d27d5
Fix nftables actions for IPv6 addresses, fixes #1893
* add [Init?family=inet6] to nftables-common.conf and make nftable
  expressions more modular
* change "ip protocol" to "meta l4proto" in nftables-allports.conf
  since the former only works for IPv4
2017-09-11 23:32:53 +02:00
sebres b185e7cb04 Merge remote-tracking branch 'upstream/master' into 0.10 2017-09-08 11:11:05 +02:00
Serg G. Brester fd83260bd8 jail "pass2allow-ftp" should supply blocktype to action
closes gh-1884
2017-09-07 18:51:08 +02:00
Serg G. Brester bb97e66627 Merge pull request #1882 from coderua/patch-1
Add Jorgee Vulnerability Scanner protect
2017-09-07 15:52:31 +02:00
Serg G. Brester 2cd02b731b filter.d/exim.conf: fixed failregex for case of `D=0s`
Closes gh-1886
2017-09-07 15:28:46 +02:00
sebres 4bc226a692 optimized regex 2017-09-05 10:59:16 +02:00
Vladimir Chumak fafefc0293 Add Jorgee Vulnerability Scanner protect
Details for Jorgee Vulnerability Scanner: https://www.symantec.com/security_response/attacksignatures/detail.jsp?asid=30164
2017-09-05 10:56:43 +02:00
sebres 4163f32968 small review, prefix replaced with `%(_apache_error_client)s` from apache-common.conf include 2017-09-04 11:48:01 +02:00
john ac95449bbb changed zoneminder regex as per Sebres and yarikoptic recommendations 2017-09-04 11:37:09 +02:00
john 7013729a1f removed redundant options for zoneminder from jail.conf 2017-09-04 11:37:05 +02:00
john 5c3a666380 fixed incomplete regex after adding anchors 2017-09-04 11:37:03 +02:00
john 3d45fd2713 implemented yarikoptic's suggestions in fail2ban pull request #1376 2017-09-04 11:37:00 +02:00
john 08878d22dd added zoneminder.conf filter 2017-09-04 11:36:50 +02:00
john a90f6c4ae8 added zoneminder jail and filter
# Conflicts:
#	config/jail.conf
2017-09-04 11:36:47 +02:00
sebres c312962029 filter.d/dovecot.conf: partially cherry-pick to 0.9 PR #1880 from sebres/0.10-fix-dovecot-regex (d926e11a5c)
fixed failregex (without new mode aggressive)
2017-09-01 10:57:41 +02:00
sebres 2cfc53c08e remove capturing groups 2017-09-01 10:25:09 +02:00
sebres 9b8563f35e - fixes regex for message `imap-login: Disconnected (auth failed, X attempts) ...` has to many variations on additional info after `<HOST>`,
leave it end-anchored because variable part `user=<[^>]*>` (before `<HOST>`) to avoid injecting, but can be safe rewritten using `[^>]*` in opposite to "greedy" `user=<[^>]*>`.
- introduces mode `aggressive` and extends regex for this mode to match:
  * no auth attempts (previously removed in gh-601, because of lots of false positives on misconfigured MTAs)
  * disconnected before auth was ready
  * client didn't finish SASL auth
2017-09-01 09:56:21 +02:00
Serg G. Brester a287d0a05c Merge pull request #1872 from kmzby/master
Added filter for phpMyAdmin+syslog
2017-08-25 12:22:58 +02:00