Commit Graph

652 Commits (babb76cb3c4990c4ee119c969d91b9dd9a755a4d)

Author SHA1 Message Date
sebres a5b62a7f36 failregex extended and simplified (partially ported from gh-1409). 2017-07-18 16:34:22 +02:00
sebres 098abae4e6 Remove greedy catch-all before `<HOST>`, make regex more universal, fewer prone to errors (should avoid future changes, if some optional parameters coming again before/after `RemoteAddress`) + non-captured groups now.
Test for possible injection (5.6.7.8 in session-id) already available, line 59 (thus already covered).
2017-07-18 16:09:53 +02:00
Kirill 4c0c7b97c0 Update asterisk.conf to new log message
I got an issue like this:
[2016-05-15 22:53:00] SECURITY[26428] res_security_log.c: SecurityEvent="FailedACL",EventTV="2016-05-15T22:53:00.203+0300",Severity="Error",Service="AMI",EventVersion="1",AccountID="admin",SessionID="0x7fb580001518",LocalAddress="IPV4/TCP/0.0.0.0/5038",RemoteAddress="IPV4/TCP/78.129.227.4/62389",SessionTV="1970-01-01T03:00:00.000+0300"

# [sebres] rebased to current master and resolving conflicts.
2017-07-18 15:40:32 +02:00
sebres a1d0633e69 filter.d/asterisk.conf - fixed failregex AMI Asterisk authentification failed (see gh-1302):
- optional space between NOTICE and pid;
- optional part "Host " before IP-address;
2017-07-03 12:57:28 +02:00
Serg G. Brester 6110ba9cc3 filter.d/proftpd.conf: added option `journalmatch` for systemd backend (closes gh-1613) 2017-06-30 18:00:01 +02:00
sebres 2b358bc1a4 filter.d/apache-overflows.conf: rewritten without end-anchor ($), because apache-log could contain very long URLs (and/or referrer), the parsing of it anchored way may be very vulnerable (at least as regards the system resources, see gh-1790). 2017-06-15 11:16:19 +02:00
Peter Nowee b93e47b12f
dovecot: Match also when user field is empty
Commit 5678d08 of 2016-11-26 changed:

    ( user=<\S*>,)?

to:

    ( user=<[^>]+>,)?

The change from `*` (zero or more times) to `+` (one or more times) may
not have been intended. It will miss lines containing, for example:

    Aborted login (tried to use disallowed plaintext auth): user=<>

This commit reverts the `+` back to `*`.
2017-05-31 15:54:30 +02:00
Marcel Bischoff 228d25c548 Update Kerio Connect filter (#1455)
* Update Kerio Connect filter

Fixed regex for some log entries that did not get recognized and some additional error formats are added.

* Add missing colon, GitHub address

* Add filter tests

* Add missing test
2017-05-30 20:27:44 +02:00
Filippo Tessarotto ff1c6718da Postfix RBL: 554 & SMTP
Cherry-pick of 607568f5da (see gh-1686)
2017-05-15 14:42:37 +02:00
sebres 0600d51511 filter.d/exim.conf: added new reason for "rejected RCPT" regex: Unrouteable address 2017-05-07 14:02:38 +02:00
sebres c546f85207 filter.d/exim.conf: cherry-picked from 0.10, match complex time like `D=2m42s` (closes gh-1766) 2017-05-07 13:02:32 +02:00
sebres 3161bcf78b filter.d/exim.conf: optional part `(...)` after host-name before `[IP]`, normalized over whole config file.
# Conflicts:
#	config/filter.d/exim.conf
2017-04-24 19:21:26 +02:00
Serg G. Brester 52c1950371 Update mysqld-auth.conf
small typo, closes gh-1725 (Thx @seth-reeser)
2017-03-24 19:03:17 +01:00
sebres 8768776d68 filter.d/cyrus-imap.conf: fixed `failregex` - accept entries without login-info resp. hostname before IP address 2017-03-09 16:13:45 +01:00
sebres 9d06f0ee40 sshd-amend: optional space after port part 2017-01-23 08:56:47 +01:00
sebres 54a8c681ce suhosin.conf: removed greedy match 2017-01-21 16:26:07 +01:00
sebres 8aa9516d50 sshd.conf: fixed expression "received disconnect ... auth fail" - optional space after port part (gh-1652) 2017-01-21 16:18:03 +01:00
sebres 3276bd6d54 sshd: additionally aggressive filter rules - no matching cipher resp. no matching key exchange method (gh-1545, gh-1117) 2017-01-21 15:57:05 +01:00
sebres 628789f9a9 sshd: conditional parameter "mode" for sshd jail (normal, ddos, aggressive)
filter sshd-ddos and new filter sshd-aggressive are both derivation of sshd-filter
2017-01-21 15:54:49 +01:00
sebres dd373dba9f test all config-regexp, that contains greedy catch-all before <HOST>, that is hard-anchored at end or precise sub expression after <HOST>;
new ssh rule(s) added:
- Connection reset by peer (multi-line rule during authorization process);
- No supported authentication methods available;
Single line and multi-line expression optimized, added optional prefixes and suffix (logged from several ssh versions);
closes gh-864
2017-01-21 15:53:48 +01:00
Christian Brandlehner a4d8426401 Support for IBM Domino SMTP task (#1603)
filter.d/domino-smtp.conf
2017-01-20 08:44:20 +01:00
sebres a9523aefbb sshd.conf: fixed non-anchored part of regex (misleading match of colon inside IPv6 address instead of `: ` in the reason-part by missing space). 2017-01-10 12:58:44 +01:00
Yaroslav Halchenko 31a1560eaa minor typos (thanks Vincent Lefevre, Debian #847785) 2016-12-11 15:13:11 -05:00
sebres 45f1d811c9 Merge branch 'alex1702-1586' 2016-11-28 18:54:02 +01:00
sebres 425170cef3 code review, makes the test cases workable, added dev-notes 2016-11-28 18:39:07 +01:00
sebres 931eab84b5 `filter.d/apache-modsecurity.conf`
- fixed for newer version (one space, closes gh-1626)
reviewed and optimized:
  - non-greedy catch-all replaced for safer match
  - unneeded catch-all anchoring removed
  - non-capturing groups
2016-11-28 11:28:27 +01:00
sebres 5678d08a79 filter.d/dovecot.conf update:
- fixes failregex, that ignores failures through some irrelevant info (closes #1623);
- ignores whole additionally irrelevant info in anchored regex before fixed failure data `\((?:auth failed, \d+ attempts( in \d+ secs)?|tried to use (disabled|disallowed) \S+ auth)\)`
- review, IPv6 compatibility fix, non-capturing groups
2016-11-26 16:50:37 +01:00
sebres b5433f48b7 amend after code review of merge gh-1581 2016-11-11 11:09:46 +01:00
sebres bee6e7376b Merge branch 'aclindsa:master' 2016-11-11 10:58:40 +01:00
sebres dab5f56609 Merge branch 'fix-gh-1477' 2016-11-11 10:17:07 +01:00
Alex 8ac28e5dcb Make changes and add test file 2016-11-10 13:09:32 +01:00
Alex 8c40766511 Add Mongodb-auth filter and jail 2016-11-10 12:48:24 +01:00
Aaron Lindsay 7805f9972d filter.d/sshd.conf: Match 'Invalid user' with 'port \d*' 2016-10-15 15:52:19 -04:00
sebres 84c3eb3e0e filter.d/sendmail-reject.conf: double space (should be by missing dns-host only)
Closes #1578
2016-10-15 14:53:45 +02:00
sebres 9fb167b5e1 filter.d/vsftpd.conf: optional reason message after FAIL LOGIN, closes #1543 2016-09-09 09:20:15 +02:00
sebres 4a1d720344 filter.d/asterisk.conf: another part ` chan_sip.c:28468 handle_request_register:` in log prefix 2016-08-22 14:10:50 +02:00
sebres 2c54f90469 sshd-filter: better universal regexp, that matches more complex different injects, using conditional expressions (on username and auth-info section), see new test cases also. 2016-08-19 10:19:12 +02:00
sebres a544c5abac sshd-filter: recognized "Failed publickey for" now (gh-1477) + improved regexp (not anchored now to recognize all "Failed anything for ... from <HOST>"
ChangeLog entry added
2016-08-18 21:38:55 +02:00
sebres 38d53a72fd introduces new command "fail2ban-python", as automatically created symlink to python executable, where fail2ban currently installed (resp. its modules are located);
fixed pythonic filters and test scripts (running via "fail2ban-python" now);
fixed test case "testSetupInstallRoot" not for default python (also using direct call, out of virtualenv);

# Conflicts:
#	config/filter.d/ignorecommands/apache-fakegooglebot
#	fail2ban/tests/files/config/apache-auth/digest.py
#	fail2ban/tests/files/ignorecommand.py
#	fail2ban/tests/misctestcase.py
2016-08-12 17:58:37 +02:00
maksyms 9ddbd642f7 Accept no space after "failed:" (#1501)
yoh: Squashed to ease cherry-picking into 0.9

* accept no space after "failed:"

fix issue #1497

* accept no space after "failed:"

* Update postfix-sasl

* Update postfix-sasl

* Update postfix-sasl
2016-08-08 17:09:47 -04:00
sebres c52aaa8b78 ASSP failregex minor fixes 2016-08-08 19:06:28 +02:00
rhardy613 8265e3f0f9 Fix comments
For some reasons the comment changes weren't pickup in the last commit.
This fixes it.
2016-08-05 23:25:15 -04:00
rhardy613 66fe5a77ce Fix ASSP filter to work with both ASSP V1 and V2
ASSP V1 development stopped at the end of 2014 and it is now deprecated.
All users were urged to upgrade to ASSP V2 which is still actively
developed.
fail2ban 0.9.5 (and trunk) still have code which only understands ASSP
V1 logs.
This means the filter ignores brute force attacks against ASSP. This fix
adds V2 support.
2016-08-05 23:18:51 -04:00
rhardy613 890a3dcbb9 Fix ASSP filter to work with current release of ASSP
ASSP V1 development stopped at the end of 2014 and it is now deprecated.
All users were urged to upgrade to ASSP V2 which is still actively
developed. For some reason fail2ban 0.9.5 (and trunk) still have code
which only understands ASSP V1 logs. This means the filter ignores brute
force attacks against ASSP.
Now updated with anchored patterns tested against 6 months of log data.
2016-08-05 17:26:47 -04:00
rhardy613 f73746d846 Fix ASSP filter to work with current release of ASSP
ASSP V1 development stopped at the end of 2014 and it is now deprecated.
All users were urged to upgrade to ASSP V2 which is still actively
developed. For some reason fail2ban 0.9.5 (and trunk) still have code
which only understands ASSP V1 logs. This means the filter ignores brute
force attacks against ASSP.
2016-07-31 13:50:52 -04:00
Yaroslav Halchenko 28a0605f69 Merge pull request #1478 from gips0n/master
adding openldap slapd filter
2016-07-14 08:30:42 -04:00
Andrii Melnyk 7433b353ee another variant of regex 2016-07-14 10:19:21 +03:00
Andrii Melnyk 7c5828dd2a add trailing anchor to failregex 2016-07-13 21:09:42 +03:00
Andrii Melnyk 48c094f612 improved failregex according to @sebres recomendations 2016-07-08 13:45:10 +03:00
sebres f5f204ca7c Improved changes of gh-1458:
`[^']*` after callid was wrong, changed to `[^\)]*`;
  regexp anchored at the end;
  almost the same regex grouped to one;

Closes #1458
2016-07-08 11:45:25 +02:00