[Snort-users] File extraction during http/ftp transaction

Rishabh Shah rishabh420 at ...11827...
Wed Mar 11 11:38:43 EDT 2015


Hi Hui,

I am hitting the same issue while executing make. These are the commands
that I issued:
root at ...17114...:~/snort_src/snort-2.9.7.0# ./configure
--enable-file-inspect --enable-open-appid --enable-sourcefire

root at ...17114...:~/snort_src/snort-2.9.7.0# make


/root/snort_src/snort-2.9.7.0/src/plugbase.c:216: undefined reference to
`SetupAppId'
detection-plugins/libspd.a(detection_options.o): In function
`detection_hash_free_func':
/root/snort_src/snort-2.9.7.0/src/detection-plugins/detection_options.c:553:
undefined reference to `optionAppIdFree'
detection-plugins/libspd.a(detection_options.o): In function
`detection_option_hash_func':
/root/snort_src/snort-2.9.7.0/src/detection-plugins/detection_options.c:252:
undefined reference to `optionAppIdHash'
detection-plugins/libspd.a(detection_options.o): In function
`detection_option_key_compare_func':
/root/snort_src/snort-2.9.7.0/src/detection-plugins/detection_options.c:409:
undefined reference to `optionAppIdCompare'
collect2: error: ld returned 1 exit status
make[3]: *** [snort] Error 1
make[3]: Leaving directory `/root/snort_src/snort-2.9.7.0/src'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/root/snort_src/snort-2.9.7.0/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/root/snort_src/snort-2.9.7.0'
make: *** [all] Error 2


On Wed, Mar 11, 2015 at 8:40 PM, Hui cao <huica at ...589...> wrote:

>  Hi Rishabh,
>
> You need to add —enable-open-appid to you ./configure.
>
> ./configure --enable-file-inspect —enable-open-appid
>
> Best,
> Hui.
>
> On 03/11/2015 10:33 AM, Rishabh Shah wrote:
>
> Hi Joel,
>
>  Thanks for your prompt reply. I did a ./configure --enable-file-inspect
> and while executing make, I saw the following error messages:
>
>  */root/snort_src/snort-2.9.7.0/src/plugbase.c:216: undefined reference
> to `SetupAppId'*
> *detection-plugins/libspd.a(detection_options.o): In function
> `detection_hash_free_func':*
> */root/snort_src/snort-2.9.7.0/src/detection-plugins/detection_options.c:553:
> undefined reference to `optionAppIdFree'*
> *detection-plugins/libspd.a(detection_options.o): In function
> `detection_option_hash_func':*
> */root/snort_src/snort-2.9.7.0/src/detection-plugins/detection_options.c:252:
> undefined reference to `optionAppIdHash'*
> *detection-plugins/libspd.a(detection_options.o): In function
> `detection_option_key_compare_func':*
> */root/snort_src/snort-2.9.7.0/src/detection-plugins/detection_options.c:409:
> undefined reference to `optionAppIdCompare'*
> *collect2: error: ld returned 1 exit status*
> make[3]: *** [snort] Error 1
> make[3]: Leaving directory `/root/snort_src/snort-2.9.7.0/src'
> make[2]: *** [all-recursive] Error 1
> make[2]: Leaving directory `/root/snort_src/snort-2.9.7.0/src'
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory `/root/snort_src/snort-2.9.7.0'
> make: *** [all] Error 2
>
>  I am not sure why am I seeing those messages as I see a reference to the
> above errors:
>
>  root at ...17114...:~/snort_src/snort-2.9.7.0/src# grep -r
> "optionAppIdFree" .
> Binary file ./detection-plugins/detection_options.o matches
> Binary file ./detection-plugins/sp_appid.o matches
> ./detection-plugins/sp_appid.c:void optionAppIdFree(AppIdOptionData
> *optData)
> ./detection-plugins/sp_appid.c:        optionAppIdFree(optData);
> Binary file ./detection-plugins/libspd.a matches
> ./detection-plugins/detection_options.c:
>  optionAppIdFree(key->option_data);
> ./detection-plugins/sp_appid.h:void optionAppIdFree(AppIdOptionData
> *optData);
>
>
>  I appended the following line in snort.conf:
>  *preprocessor file_inspect: type_id, signature, capture_disk
> /home/file_capture/tmp/, capture_queue_size 5000*
>
>  While executing snort process, I got a core file with the following
> message:
>
>  File config:
>     file type: ENABLED
>     file signature: ENABLED
>     file capture: ENABLED
>     file capture directory: /home/file_capture/tmp/
>     file capture disk size: 300 (Default) megabytes
>     file sent to host: DISABLED (Default), port number: 0
>
>  *Segmentation fault (core dumped)*
>
>  The traceback of the core file points to:
>
>  root at ...17114...:~/snort_src# gdb snort -c core
> GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
> Copyright (C) 2014 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <
> http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-linux-gnu".
> Type "show configuration" for configuration details.
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>.
> Find the GDB manual and other documentation resources online at:
> <http://www.gnu.org/software/gdb/documentation/>.
> For help, type "help".
> Type "apropos word" to search for commands related to "word"...
> Reading symbols from snort...done.
>
>  warning: exec file is newer than core file.
> [New LWP 10904]
>
>  warning: .dynamic section for
> "/usr/local/lib/snort_dynamicengine/libsf_engine.so" is not at the expected
> address (wrong library or version mismatch?)
>
>  warning: .dynamic section for
> "/usr/local/lib/snort_dynamicpreprocessor//libsf_reputation_preproc.so" is
> not at the expected address (wrong library or version mismatch?)
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
> Core was generated by `/usr/local/bin/snort -c /etc/snort/snort.conf -Q -i
> eth1:eth2 -l /var/log/snort'.
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0  strlen () at ../sysdeps/x86_64/strlen.S:106
> 106     ../sysdeps/x86_64/strlen.S: No such file or directory.
> (gdb) bt
> *#0  strlen () at ../sysdeps/x86_64/strlen.S:106*
> *#1  0x00007f6ab63050a6 in appIdStatsInit (appFileName=0x7f6ab6628170
> <config+16> "appstats-unified.log", statsPeriod=10, rolloverSize=20971520,
> rolloverPeriod=86400) at appIdStats.c:264*
> *#2  0x00007f6ab62fa2d0 in AppIdCommonInit (memcap=268435456) at
> commonAppMatcher.c:297*
> *#3  0x00007f6ab6303798 in AppIdInit (sc=0x1eb9770, args=0x1f516e0
> "app_stats_filename appstats-unified.log, app_stats_period 10,
> app_detector_dir /usr/local/lib/openappid") at spp_appid.c:157*
> *#4  0x000000000042048e in InitVarTables (p=0x1eb9770) at parser.c:5728*
> *#5  0x000000000046c3d0 in CheckAppId (option_data=0x0, p=0x0) at
> sp_appid.c:342*
> *#6  0x0000000000000000 in ?? ()*
> *(gdb) Quit*
>
>  I had installed openappid as well.
>
>
> On Wed, Mar 11, 2015 at 7:00 PM, Joel Esler (jesler) <jesler at ...589...>
> wrote:
>
>>
>>  On Mar 11, 2015, at 9:23 AM, Rishabh Shah <rishabh420 at ...11827...> wrote:
>>
>>  Hi Snort Team,
>>
>>  Is it possible to extract any file during http/ftp transactions? The
>> HTTP preprocessor makes it possible to read the HTTP URI/content. Does
>> snort have the intelligence to extract the file during any transfer?
>>
>>
>>  Beginning with 2.9.6.0, Snort has had the ability to extract files from
>> streams and write them to disk.
>>
>>  Check out the README: https://www.snort.org/faq/readme-file
>>
>>  --
>> *Joel Esler*
>> Open Source Manager
>> Threat Intelligence Team Lead
>> Talos Group
>>
>>
>
>
>  --
> Regards,
> Rishabh Shah.
>
>
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-- 
Regards,
Rishabh Shah.
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