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804 commits

Author SHA1 Message Date
sebres
58b510a5be filter.d/domino-smtp.conf: 
- recognizes failures logged using another format (something like session-id, IP enclosed in square brackets);
  - failregex extended to catch connections rejected for policy reasons (gh-2228);
 2018-09-21 14:14:00 +02:00
Sergey G. Brester
ee207d8c31
Merge pull request #2151 from benrubson/merge 
Apache SNI error / misredirect attempts rules are combined in one regex
 2018-08-14 14:56:49 +02:00
Ben RUBSON
77b35b8db7
Improvement 2018-08-14 14:07:32 +02:00
sebres
e995d5a0b6 filter.d/freeswitch.conf: provide mode parameter, allows to avoid matching of messages like auth challenge (REGISTER) (see gh-2163) (currently extra as default to be backwards-compatible), see comments in filter how to set it to mode normal. 2018-08-03 11:42:15 +02:00
sebres
bc2dbacc9a filter.d/freeswitch.conf: provide compatibility for log-format from gh-2193: 
- extended with new default date-pattern `^(?:%%Y-)?%%m-%%d[ T]%%H:%%M:%%S(?:\.%%f)?` to cover
    `YYYY-mm-dd HH:MM::SS.ms` as well as `mm-dd HH:MM::SS.ms` (so year is optional);
  - more optional arguments in log-line (so accept [WARN] as well as [WARNING] and optional [SOFIA] hereafter);
 2018-08-03 11:22:30 +02:00
sebres
22d37cdce2 sshd: fixed failregex for ddos (resp. aggressive) mode, to cover "authenticating user" case in log-message: 
Connection closed by authenticating user root 192.0.2.10 ... [preauth]
tests extended (also with few injection tries).
closes gh-2185.
 2018-07-18 15:31:04 +02:00
sebres
8fe07e29ad filter.d/dovecot.conf: failregex enhancement to catch disconnected with "proxy dest auth failed"; 
closes gh-2184
 2018-07-17 15:06:42 +02:00
Dobrica Pavlinusic
6f1e789f31 dovecot: collect F-USER and variants 
We are prefering ruser= if availble because this are credentials
presented to dovecot from remote client.
 2018-06-30 16:16:03 +02:00
Boris Gulay
a923cd209b filter.d/dovecot.conf: failregex enhancement to catch sql password mismatch errors; 2018-06-11 14:30:10 +02:00
benrubson
f54f6caece Merge Apache SNI error / misredirect attempts rules 2018-06-09 10:19:27 +02:00
Michael Grant
57bc502d5c Update sendmail-reject.conf 2018-04-04 18:52:36 +02:00
Michael Grant
2ab6a5ae62 Update sendmail-auth.conf 2018-04-04 18:52:35 +02:00
Michael Grant
87520e8008 Sendmail logs IPv6 addresses with the prefix 'IPv6:'. Added (IPv6:)? before all <HOST> regexes to match the IPv6 address (but not the prefix). 2018-04-04 18:52:33 +02:00
Sergey G. Brester
7bbc26d67e
Merge pull request #2097 from benrubson/sni 
Detect Apache SNI error / misredirect attempts
 2018-04-04 16:31:38 +02:00
benrubson
bd74f7ba8b Detect Apache SNI error / misredirect attempts, typos 2018-04-04 00:20:58 +02:00
sebres
8423f017e7 Merge branch 'sshd-ddos-mode-closed-preauth' into 0.10 2018-04-03 14:12:35 +02:00
sebres
4ee07adde6 Merge branch '0.10' into fix-sshd-filter-suff 
# Conflicts resolved:
#	fail2ban/server/filter.py
 2018-04-03 13:30:57 +02:00
benrubson
30dc22fb2e Detect Apache SNI error / misredirect attempts 2018-03-29 11:36:49 +02:00
sebres
4f6532f810 filter.d/sshd.conf: mode ddos (and aggressive) extended to catch Connection closed by ... [preauth], so in DDOS mode it causes failure now on closed within preauth stage; 
at least using both modes can ban port-scanners and prevent for other annoying "intruders", closing connection within preauth-stage (see gh-2085 for example).
 2018-03-20 18:54:22 +01:00
sebres
cd7f1354c6 remove end-anchors for expressions that are precise enough (with clear flow, simple branches, without catch-all's, etc.) 2018-03-20 18:47:42 +01:00
sebres
c31eb1c562 quick optimization: normalizes pam-generic prefregex (more similar to the same regex within sshd-filter) + datepattern anchored now; 2018-03-20 16:00:21 +01:00
sebres
25cc42129a hold all user names affected by interim attempts in order to avoid forget a failures after success login: 
intruder (as legitimate user) firstly tries to login with another user-name (brute-force), so hopes to reset failure counter by succeeded login;
this is fixed and covered in tests now;
sshd-filter extended to cover multiple-login attempts (also fully implements gh-2070);
 2018-03-20 13:09:05 +01:00
sebres
a9c94686b6 fixed multiple regexs matched 2018-03-20 09:09:42 +01:00
sebres
8028d3940d amend with better match of optional suffix-groups; 
remove end-anchors for expressions are precise enough (with clear flow, simple branches, without catch-all's, etc.);
 2018-03-19 17:29:26 +01:00
sebres
66d2436f21 filter.d/sshd.conf: extend suffix with optional port, move it to prefregex at end outside of the content 2018-03-19 16:50:49 +01:00
sebres
7b3442c4e2 amend to 185cb998e7: capture error prefix outside of the failure content; 2018-03-19 14:53:56 +01:00
sebres
185cb998e7 make prefregex more precise in order to avoid catch the content for non failure lines 2018-03-19 14:38:47 +01:00
sebres
e8ffab28fb filter.d/apache-noscript.conf: extended to match "Primary script unknown", got from php-fpm module. 2018-03-19 14:23:24 +01:00
sebres
a6fb33bdec filter.d/recidive.conf: fixed if logging into systemd-journal (SYSLOG) with daemon name in prefix, gh-2069 2018-03-09 13:56:38 +01:00
sebres
caa2bdfee6 amendment for gh-2061: it looks like the port was added here also 2018-03-02 19:24:47 +01:00
sebres
a3bcbe2d1b backwards-compatibility, test-cases and ChangeLog update 2018-03-02 19:15:10 +01:00
MatthieuBarbu
6b5516b851 fix sshd rule #2 
in line 58, rule don't match with "%(__suff)s" but work fine if I replace with "%(__on_port_opt)s"
Debian 9 stretch : fail2ban 0.10.3
 2018-03-02 18:40:36 +01:00
sebres
1d7aa2ff21 filter.d/sshd.conf: rewrite fix (for new ssh log-format) backwards compatible + test-cases extended to cover both cases 2018-03-02 18:17:17 +01:00
MatthieuBarbu
9f5c873526 fix sshd rule 
just remove the space before ":11" line 52 because don't match on my Debian 9 stretch...
I don't know if this is wrong on all OS
 2018-03-02 17:53:35 +01:00
sebres
8c291cad38 filter.d/asterisk.conf: fixed failregex prefix by log over remote syslog server (gh-2060) 2018-03-02 09:17:04 +01:00
sebres
e636567d23 filter.d/exim.conf: failregex extended with SMTP call dropped: too many syntax or protocol errors. 2018-02-19 09:50:46 +01:00
sebres
19a5a2f8c0 filter.d/murmur.conf: fixed detection of failures reading from journal (systemd-backend only): 
- extended with optional prefix for the systemd-journal (with second date-pattern as optional match);
- added `journalmatch` filtering;
closes gh-2043
 2018-02-09 11:43:55 +01:00
sebres
ed22ddbbbb Merge remote-tracking branch 'remotes/gh-upstream/master' into 0.10 2018-01-17 16:42:56 +01:00
sebres
63e906b2c1 regex rewritten: a bit fewer vulnerable now and using non-capturing groups, test-cases extended in order to cover trying of injection on user name 2018-01-17 16:35:32 +01:00
Benedikt Seidl
fed6c49c2d nginx-http-auth: match usernames with spaces 
# Conflicts:
#	ChangeLog
 2018-01-17 16:35:31 +01:00
Sergey G. Brester
b6c6565a7e
regex updated using non-capturing groups 2018-01-16 14:23:47 +01:00
riceru
6a1bbbf101
Update lighttpd-auth.conf 
I have lighttpd 1.4.45 (Debian 9) and auth error log is different.
Now printing mod_auth and not http_auth.
I think that the change was in Lighttp 1.4.42
 2018-01-16 12:39:55 +00:00
sebres
2b7b0da943 Merge remote-tracking branch 'remotes/gh-upstream/master' into 0.10 2018-01-15 18:16:43 +01:00
sebres
2112145eb4 stop ban of legitimate users with multiple public keys (e. g. git, etc), thereby 
differentiate between "invalid user" (going banned earlier) and valid users with public keys, for which the rejects of not valid public keys (failures) will be retarded up to "Too many authentication failures" resp. disconnect without success (accepted public key).
 2018-01-10 19:07:20 +01:00
sebres
314e402fe0 filter.d/sendmail-auth.conf - extended daemon for Fedora 24/RHEL - the daemon name is "sendmail" (gh-1632) 2018-01-10 14:49:06 +01:00
sebres
c30144b37a Merge branch '0.9' into 0.10 
# Conflicts:
#	config/action.d/firewallcmd-ipset.conf
#	config/filter.d/asterisk.conf
# Merge-point after cherry-pick, no changes:
#	fail2ban/client/jailreader.py
#	fail2ban/helpers.py
 2018-01-10 12:05:26 +01:00
Yannik Sembritzki
94f0b15c32
Allow faster parsing of hosts without ' characters in them 2018-01-08 14:54:32 +01:00
Yannik Sembritzki
b28dfb965a
Fix filter not catching asterisk requests with quote character in username (fixes #2010) 2018-01-03 18:39:30 +01:00
sebres
2712f72650 Merge remote-tracking branch 'master' into 0.10 2017-12-06 00:09:52 +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