Commit graph

410 commits

Author SHA1 Message Date
Bernhard Amann
2942a26280 also extract payload data in ssl_heartbeat 2014-04-08 12:44:51 -07:00
Bernhard Amann
f2c2da92c6 add to local.bro, add disclaimer 2014-04-08 11:53:01 -07:00
Bernhard Amann
cb87f834f9 make tls heartbeat messages a bit better. 2014-04-08 11:40:48 -07:00
Bernhard Amann
4d33bdbb1e fix tabs. 2014-04-08 11:28:13 -07:00
Bernhard Amann
c41810a337 polish script and probably detect encrypted attacks too. 2014-04-08 11:19:30 -07:00
Bernhard Amann
335a30b08f detect and alert on simple case of heartbleed 2014-04-08 11:03:12 -07:00
Bernhard Amann
b32c7c7a88 Add policy script to suppress non host-certificate logging in x509.log
Addresses BIT-1150
2014-03-19 21:32:01 -07:00
Bernhard Amann
4da0718511 Finishing touches of the x509 file analyzer.
Mostly baseline updates and new tests.

addresses BIT-953, BIT-760, BIT-1150
2014-03-13 15:21:30 -07:00
Bernhard Amann
7eb6b5133e Fix circular reference problem and a few other small things.
SSL::Info now holds a reference to Files::Info instead of the
fa_files record.

Everything should work now, if everyone thinks that the interface is
ok I will update the test baselines in a bit.

addresses BIT-953, BIT-760
2014-03-04 05:30:32 -08:00
Bernhard Amann
110d9fbd6a X509 file analyzer nearly done. Verification and most other policy scripts
work fine now.

Todo:
 * update all baselines
 * fix the circular reference to the fa_file structure I introduced :)
   Sadly this does not seem to be entirely straightforward.

addresses BIT-953, BIT-760
2014-03-03 17:07:50 -08:00
Jon Siwek
c61dfb1963 Rewrite DNS state tracking which matches queries and replies.
The previous method of matching queries with replies was still
unreliable in cases where the reply contains no answers.  The new code
also takes extra measures to avoid pending state growing too large in
cases where the condition to match a query with a corresponding reply is
never met, but yet DNS messages continue to be exchanged over the same
connection 5-tuple (preventing cleanup of the pending state).
2014-01-30 17:21:01 -06:00
Jon Siwek
31866f8f59 Change dns.log to include only standard DNS queries.
The scope of dns.log is now only standard queries (OPCODE == 0).  Other
kinds of queries (e.g. inverse query) were not handled correctly and
could interfere with the state tracking of the default DNS scripts.
2014-01-28 13:56:22 -06:00
Justin Azoff
cbe48258f6 fix the caching of recently validated certs
The recently_validated_certs table was being checked for entries, but
missing hashes were not being added to it after validation.
2013-12-10 11:27:19 -05:00
Vlad Grigorescu
2cf90d986e Fix resp_size in ssh.log, require a minimum resp_size for the heuristic. Some work on geodata, but still a WIP. 2013-11-05 11:34:32 -05:00
Daniel Thayer
9374a7d584 Fix typos and formatting in the policy/protocols docs
Also updated a test related to these changes, and adjusted line numbers.
2013-10-21 02:34:28 -05:00
Daniel Thayer
9d2668a3f4 Fix incorrect uses of reST directives
These did not generate any warning messages unfortunately, so had to
find them using grep.
2013-10-17 01:50:42 -05:00
Seth Hall
2b78922af8 Added a $unique_max field to Reducers for the SumStats::UNIQUE calculation
- Using the new option in scan.bro and the FTP bruteforce detection.
2013-08-28 00:57:44 -04:00
Robin Sommer
e7aefcdf36 Merge branch 'master' into topic/robin/dhcp-merge 2013-08-03 19:14:01 -07:00
Robin Sommer
308db797c3 Merge remote-tracking branch 'origin/topic/vladg/dhcp'
* origin/topic/vladg/dhcp:
  DHCP: Adding unit tests.
  DHCP:
  Rework the DHCP analyzer to make it compatible again.
2013-08-03 19:14:00 -07:00
Vlad Grigorescu
1786a3b92d DHCP: Adding unit tests. 2013-07-31 17:30:56 -04:00
Vlad Grigorescu
0f1b0e75b7 DHCP:
- Added the known-devices log, and the script to log DHCP hostname per MAC address,
 - Added DPD sig,
 - Removed some scripts following a discussion with Seth.
2013-07-31 16:32:20 -04:00
Seth Hall
7db531e162 Merge remote-tracking branch 'origin/master' into topic/seth/sumstats-updates
Conflicts:
	doc/scripts/DocSourcesList.cmake
	scripts/test-all-policy.bro
2013-07-30 11:48:03 -04:00
Robin Sommer
984e9793db Merge remote-tracking branch 'origin/topic/seth/faf-updates'
* origin/topic/seth/faf-updates: (27 commits)
  Undoing the FTP tests I updated earlier.
  Update the last two btest FAF tests.
  File analysis fixes and test updates.
  Fix a bug with getting analyzer tags.
  A few test updates.
  Some tests work now (at least they all don't fail anymore!)
  Forgot a file.
  Added protocol description functions that provide a super compressed log representation.
  Fix a bug where orig file information in http wasn't working right.
  Added mime types to http.log
  Clean up queued but unused file_over_new_connections event args.
  Add jar files to the default MHR lookups.
  Adding CAB files for MHR checking.
  Improve malware hash registry script.
  Fix a small issue with finding smtp entities.
  Added support for files to the notice framework.
  Make the custom libmagic database a git submodule.
  Add an is_orig parameter to file_over_new_connection event.
  Make magic for emitting application/msword mime type less strict.
  Disable more libmagic builtin checks that override the magic database.
  ...

Conflicts:
	doc/scripts/DocSourcesList.cmake
	scripts/base/init-bare.bro
	scripts/test-all-policy.bro
	testing/btest/Baseline/coverage.bare-load-baseline/canonified_loaded_scripts.log
	testing/btest/Baseline/coverage.default-load-baseline/canonified_loaded_scripts.log
2013-07-29 14:21:52 -07:00
Jon Siwek
939619889d File analysis fixes and test updates.
- Several places were just using old variable names or not loading
  scripts correctly after they'd been renamed/moved.

- Revert/adjust a change in how HTTP file handles are generated that
  broke partial content responses.

- Turn some libmagic builtin checks back on; seems some are actually
  useful (e.g. text detection seems to be a builtin).  The rule going
  forward probably will be only to turn off a builtin if we confirm it
  causes issues.

- Removed some tests that are redundant or not necessary anymore because
  the generic file analysis tests cover them.

- A couple FTP tests still fail that I think need an actual solution via
  script changes.
2013-07-25 16:51:16 -05:00
Seth Hall
4b9d8b2c73 Tiny fix to account for missing str field (not sure how this happens yet) 2013-07-22 15:38:04 -04:00
Vlad Grigorescu
deeb5ec38e Rework the DHCP analyzer to make it compatible again. 2013-07-21 20:31:23 -04:00
Seth Hall
58f59b9bc3 Add server samples to SSH bruteforce detection. 2013-07-20 02:08:52 -04:00
Seth Hall
9dae9dd3e2 Remove the intel insertion after heuristically detecting ssh bruteforcing. 2013-07-19 13:53:15 -04:00
Seth Hall
58d133e764 Merge remote-tracking branch 'origin/master' into topic/seth/faf-updates
Conflicts:
	scripts/base/frameworks/files/main.bro
	scripts/base/init-bare.bro
	scripts/base/protocols/ftp/file-analysis.bro
	scripts/base/protocols/http/file-analysis.bro
	scripts/base/protocols/irc/file-analysis.bro
	scripts/base/protocols/smtp/file-analysis.bro
	src/const.bif
	src/event.bif
	src/file_analysis/Analyzer.h
	src/file_analysis/file_analysis.bif
2013-07-05 02:13:27 -04:00
Seth Hall
df2841458d Large overhaul in name and appearance for file analysis. 2013-07-05 02:00:14 -04:00
Seth Hall
0a18b62d12 Merge remote-tracking branch 'origin/master' into topic/seth/sumstats-updates
Conflicts:
	scripts/base/frameworks/sumstats/cluster.bro
	scripts/base/frameworks/sumstats/plugins/average.bro
	scripts/base/frameworks/sumstats/plugins/max.bro
	scripts/base/frameworks/sumstats/plugins/min.bro
	scripts/base/frameworks/sumstats/plugins/sample.bro
	scripts/base/frameworks/sumstats/plugins/std-dev.bro
	scripts/base/frameworks/sumstats/plugins/sum.bro
	scripts/base/frameworks/sumstats/plugins/unique.bro
	scripts/base/frameworks/sumstats/plugins/variance.bro
	scripts/policy/protocols/http/detect-sqli.bro
	testing/btest/scripts/base/frameworks/sumstats/cluster-intermediate-update.bro
2013-05-21 22:33:16 -04:00
Seth Hall
bec965b66f Large update for the SumStats framework.
- On-demand access to sumstats results through "return from"
   functions named SumStats::request and Sumstats::request_key.
   Both functions are tested in standalone and clustered modes.

 - $name field has returned to SumStats which simplifies cluster
   code and makes the on-demand access stuff possible.

 - Clustered results can only be collected for 1 minute from their
   time of creation now instead of time of last read.

 - Thresholds use doubles instead of counts everywhere now.

 - Calculation dependency resolution occurs at start up time now
   instead of doing it at observation time which provide a minor
   cpu performance improvement.  A new plugin registration mechanism
   was created to support this change.

 - AppStats now has a minimal doc string and is broken into hook-based
   plugins.

 - AppStats and traceroute detection added to local.bro
2013-05-21 15:52:59 -04:00
Robin Sommer
eb637f9f3e Merge remote-tracking branch 'origin/master' into topic/robin/plugins
Thanks to git this merge was less troublesome that I was afraid it
would be. Not all tests pass yet though (and file hashes have changed
unfortunately).

Conflicts:
	cmake
	doc/scripts/DocSourcesList.cmake
	scripts/base/init-bare.bro
	scripts/base/protocols/ftp/main.bro
	scripts/base/protocols/irc/dcc-send.bro
	scripts/test-all-policy.bro
	src/AnalyzerTags.h
	src/CMakeLists.txt
	src/analyzer/Analyzer.cc
	src/analyzer/protocol/file/File.cc
	src/analyzer/protocol/file/File.h
	src/analyzer/protocol/http/HTTP.cc
	src/analyzer/protocol/http/HTTP.h
	src/analyzer/protocol/mime/MIME.cc
	src/event.bif
	src/main.cc
	src/util-config.h.in
	testing/btest/Baseline/coverage.bare-load-baseline/canonified_loaded_scripts.log
	testing/btest/Baseline/coverage.default-load-baseline/canonified_loaded_scripts.log
	testing/btest/Baseline/istate.events-ssl/receiver.http.log
	testing/btest/Baseline/istate.events-ssl/sender.http.log
	testing/btest/Baseline/istate.events/receiver.http.log
	testing/btest/Baseline/istate.events/sender.http.log
2013-05-16 17:58:48 -07:00
Bernhard Amann
80962ad74b change names of data structures after talking with seth 2013-05-15 09:44:43 -07:00
Bernhard Amann
b0c4dcdfed make last plugin nicer and samplify sqli detector 2013-05-15 01:09:52 -07:00
Robin Sommer
b9249ecf9d Layout tweaks for the sumstats code, and preliminary updates for NEWS.
The layout changes are mostly whitespace and some comment rewrapping.
No functional changes.
2013-04-28 15:35:21 -07:00
Seth Hall
1cac89e4f8 SumStats test checkpoint. 2013-04-16 00:54:41 -04:00
Seth Hall
fbe967e16a Checkpoint for SumStats rename. 2013-04-15 15:12:28 -04:00
Seth Hall
e8b60d1ba8 Updated FTP bruteforce detection and a few other small changes. 2013-04-02 00:55:25 -04:00
Seth Hall
0e3c84e863 Fixed the measurement "sample" plugin. 2013-04-02 00:19:06 -04:00
Seth Hall
b477d2b02d Measurement framework is ready for testing.
- New, expanded API.
 - Calculations moved into plugins.
 - Scripts using measurement framework ported.
 - Updated the script-land queue implementation to make it more generic.
 -
2013-04-01 17:04:15 -04:00
Seth Hall
93eca70e6b Merge remote-tracking branch 'origin/master' into topic/seth/metrics-merge 2013-04-01 14:16:46 -04:00
Robin Sommer
af1809aaa3 First prototype of new analyzer framework.
This is a larger internal change that moves the analyzer
infrastructure to a more flexible model where the available analyzers
don't need to be hardcoded at compile time anymore. While currently
they actually still are, this will in the future enable external
analyzer plugins. For now, it does already add the capability to
dynamically enable/disable analyzers from script-land, replacing the
old Analyzer::Available() methods.

There are three major parts going into this:

    - A new plugin infrastructure in src/plugin. This is independent
      of analyzers and will eventually support plugins for other parts
      of Bro as well (think: readers and writers). The goal is that
      plugins can be alternatively compiled in statically or loadead
      dynamically at runtime from a shared library. While the latter
      isn't there yet, there'll be almost no code change for a plugin
      to make it dynamic later (hopefully :)

    - New analyzer infrastructure in src/analyzer. I've moved a number
      of analyzer-related classes here, including Analyzer and DPM;
      the latter now renamed to Analyzer::Manager. More will move here
      later. Currently, there's only one plugin here, which provides
      *all* existing analyzers. We can modularize this further in the
      future (or not).

    - A new script interface in base/framework/analyzer. I think that
      this will eventually replace the dpm framework, but for now
      that's still there as well, though some parts have moved over.

I've also remove the dpd_config table; ports are now configured via
the analyzer framework. For exmaple, for SSH:

    const ports = { 22/tcp } &redef;

    event bro_init() &priority=5
        {
        ...
        Analyzer::register_for_ports(Analyzer::ANALYZER_SSH, ports);
        }

As you can see, the old ANALYZER_SSH constants have more into an enum
in the Analyzer namespace.

This is all hardly tested right now, and not everything works yet.
There's also a lot more cleanup to do (moving more classes around;
removing no longer used functionality; documenting script and C++
interfaces; regression tests). But it seems to generally work with a
small trace at least.

The debug stream "dpm" shows more about the loaded/enabled analyzers.

A new option -N lists loaded plugins and what they provide (including
those compiled in statically; i.e., right now it outputs all the
analyzers).

This is all not cast-in-stone yet, for some things we need to see if
they make sense this way. Feedback welcome.
2013-03-26 11:05:38 -07:00
Robin Sommer
d58a02aa01 Merge remote-tracking branch 'origin/topic/bernhard/base64'
* origin/topic/bernhard/base64:
  and re-enable caching of extracted certs
  and add bae64 bif tests.
  re-unify classes
  and modernize script.
  add base64-encode functionality and bif.

Closes #965.
2013-03-17 13:00:52 -07:00
Seth Hall
8778761c07 Checkpoint 2013-03-13 22:55:03 -04:00
Bernhard Amann
457ce10e99 and re-enable caching of extracted certs
I kind of deleted the line by accident...
2013-03-13 00:34:15 -07:00
Seth Hall
09cbaa7ccc Merge remote-tracking branch 'origin/master' into topic/seth/metrics-merge
Conflicts:
	testing/btest/Baseline/coverage.default-load-baseline/canonified_loaded_scripts.log
	testing/btest/Baseline/scripts.base.frameworks.notice.cluster/manager-1.notice.log
	testing/btest/Baseline/scripts.base.frameworks.notice.suppression-cluster/manager-1.notice.log
	testing/btest/Baseline/scripts.base.protocols.ftp.gridftp/notice.log
2013-03-13 00:26:55 -04:00
Bernhard Amann
a1896fde90 Merge remote-tracking branch 'origin/master' into topic/bernhard/base64 2013-03-12 09:28:07 -07:00
Bernhard Amann
986b346e3f remove the byte_len and length bifs 2013-03-06 13:45:42 -08:00
Bernhard Amann
cfada61672 and modernize script.
thanks Seth.
2013-03-06 13:30:13 -08:00