a923cd209b
`filter.d/dovecot.conf`: failregex enhancement to catch sql password mismatch errors;
2018-06-11 14:30:10 +02:00
57bc502d5c
Update sendmail-reject.conf
2018-04-04 18:52:36 +02:00
2ab6a5ae62
Update sendmail-auth.conf
2018-04-04 18:52:35 +02:00
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
7bbc26d67e
Merge pull request #2097 from benrubson/sni
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Detect Apache SNI error / misredirect attempts
2018-04-04 16:31:38 +02:00
bd74f7ba8b
Detect Apache SNI error / misredirect attempts, typos
2018-04-04 00:20:58 +02:00
8423f017e7
Merge branch 'sshd-ddos-mode-closed-preauth' into 0.10
2018-04-03 14:12:35 +02:00
4ee07adde6
Merge branch '0.10' into fix-sshd-filter-suff
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# Conflicts resolved:
# fail2ban/server/filter.py
2018-04-03 13:30:57 +02:00
30dc22fb2e
Detect Apache SNI error / misredirect attempts
2018-03-29 11:36:49 +02:00
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;
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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
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
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
25cc42129a
hold all user names affected by interim attempts in order to avoid forget a failures after success login:
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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
a9c94686b6
fixed multiple regexs matched
2018-03-20 09:09:42 +01:00
8028d3940d
amend with better match of optional suffix-groups;
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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
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
7b3442c4e2
amend to 185cb998e7c7f2509830bed4a9f2fe6179f77e7b: capture error prefix outside of the failure content;
2018-03-19 14:53:56 +01:00
185cb998e7
make `prefregex` more precise in order to avoid catch the content for non failure lines
2018-03-19 14:38:47 +01:00
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
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
caa2bdfee6
amendment for gh-2061: it looks like the port was added here also
2018-03-02 19:24:47 +01:00
a3bcbe2d1b
backwards-compatibility, test-cases and ChangeLog update
2018-03-02 19:15:10 +01:00
6b5516b851
fix sshd rule #2
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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
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
9f5c873526
fix sshd rule
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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
8c291cad38
filter.d/asterisk.conf: fixed failregex prefix by log over remote syslog server (gh-2060)
2018-03-02 09:17:04 +01:00
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
19a5a2f8c0
filter.d/murmur.conf: fixed detection of failures reading from journal (systemd-backend only):
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- 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
ed22ddbbbb
Merge remote-tracking branch 'remotes/gh-upstream/master' into 0.10
2018-01-17 16:42:56 +01:00
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
fed6c49c2d
nginx-http-auth: match usernames with spaces
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# Conflicts:
# ChangeLog
2018-01-17 16:35:31 +01:00
b6c6565a7e
regex updated using non-capturing groups
2018-01-16 14:23:47 +01:00
6a1bbbf101
Update lighttpd-auth.conf
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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
2b7b0da943
Merge remote-tracking branch 'remotes/gh-upstream/master' into 0.10
2018-01-15 18:16:43 +01:00
2112145eb4
stop ban of legitimate users with multiple public keys (e. g. git, etc), thereby
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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
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
c30144b37a
Merge branch '0.9' into 0.10
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# 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
94f0b15c32
Allow faster parsing of hosts without ' characters in them
2018-01-08 14:54:32 +01:00
b28dfb965a
Fix filter not catching asterisk requests with quote character in username ( fixes #2010 )
2018-01-03 18:39:30 +01:00
2712f72650
Merge remote-tracking branch 'master' into 0.10
2017-12-06 00:09:52 +01:00
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
2b68882502
filter.d/exim.conf: provides mode "aggressive" to ban flood resp. DDOS-similar failures;
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Closes #1983
2017-12-05 16:07:53 +01:00
7f89fbc33f
Merge remote-tracking branch 'remotes/gh-upstream/master' into 0.10
2017-12-01 15:53:11 +01:00
4f63180611
Avoid injection using quotes after `auth` command;
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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
f59df2e156
Avoid any injecting on protocol (e. g. tries using camel-case)
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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
aa158ac05f
Exim failregex: Include lower/mixed case AUTH
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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
660d57e6ba
updating my email address
2017-11-29 10:43:15 +01:00
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;
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obsolete (multi-line buffered) variant extended also.
Closes gh-1943, gh-1944
2017-11-23 22:21:42 +01:00
0e66e3cc57
Merge branch 'master' into 0.10
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# Conflicts:
# config/filter.d/asterisk.conf
2017-10-18 19:00:23 +02:00
d5d1fe679f
Remove invalid regex
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Resolves #1927
2017-10-17 14:44:23 -07:00
Boris Gulay