[Oisf-users] IPS mode drop Problem on suri 1.4.5R

rmkml rmkml at yahoo.fr
Fri Aug 23 07:25:28 UTC 2013


Hi Stefan,

Yes you are certainly right it's a bug,

another test if you permit: could you active only sid 2011582 please ?
could you drop again ?

Regards
@Rmkml


On Fri, 23 Aug 2013, Stefan Sabolowitsch wrote:

> Bonjour Hi , rmkml
> This will not help.
> Only this one rule make this Problem.
>
> Any idea, perhaps a bug in suri ?
>
> Regards Stefan
>
>
>
> Am 22.08.13 17:23 schrieb "rmkml" unter <rmkml at yahoo.fr>:
>
>> Thx Stefan for reply,
>>
>> Could you try if you disable temporary all drop sig below please ?
>> (and if you alert sig  drop again your network traffic ?)
>>
>> Regards
>> @Rmkml
>>
>>
>> On Thu, 22 Aug 2013, Stefan Sabolowitsch wrote:
>>
>>> Hi Rmkl,
>>> i found this drop rules.
>>>
>>> Regards
>>> Stefan
>>>
>>> [root at ipd2 rules]# grep "^drop.*set,ET.http.javaclient.vulnerable"
>>> *.rules
>>> emerging-current_events.rules:drop http $EXTERNAL_NET any -> $HOME_NET
>>> any
>>> (msg:"ET CURRENT_EVENTS Phoenix Java MIDI Exploit Received By Vulnerable
>>> Client"; flow:established,to_client;
>>> flowbits:isset,ET.http.javaclient.vulnerable;
>>> content:"META-INF/services/javax.sound.midi.spi.MidiDeviceProvider";
>>> classtype:bad-unknown; sid:2013484; rev:3;)
>>>
>>> emerging-current_events.rules:drop http $EXTERNAL_NET any -> $HOME_NET
>>> any
>>> (msg:"ET CURRENT_EVENTS - Modified Metasploit Jar";
>>> flow:from_server,established;
>>> flowbits:isset,ET.http.javaclient.vulnerable;
>>> content:"msf|2f|x|2f|Payload"; classtype:trojan-activity; sid:2014560;
>>> rev:6;)
>>>
>>> emerging-current_events.rules:drop http $HOME_NET any -> $EXTERNAL_NET
>>> any
>>> (msg:"ET CURRENT_EVENTS Incognito/RedKit Exploit Kit vulnerable Java
>>> payload request to /1digit.html";
>>> flowbits:isset,ET.http.javaclient.vulnerable;
>>> flow:established,to_server;
>>> urilen:7; content:".html"; http_uri; content:" Java/1"; http_header;
>>> pcre:"/\/[0-9]\.html$/U"; flowbits:set,et.exploitkitlanding;
>>> classtype:trojan-activity; sid:2014750; rev:2;)
>>>
>>> emerging-current_events.rules:drop http $HOME_NET any -> $EXTERNAL_NET
>>> any
>>> (msg:"ET CURRENT_EVENTS Unknown java_ara Bin Download";
>>> flow:established,to_server; content:"java_ara&name="; http_uri;
>>> content:"/forum/"; http_uri; content:".php?"; http_uri;
>>> flowbits:isset,ET.http.javaclient.vulnerable; classtype:trojan-activity;
>>> sid:2014805; rev:2;)
>>>
>>> emerging-current_events.rules:drop http $EXTERNAL_NET any -> $HOME_NET
>>> any
>>> (msg:"ET CURRENT_EVENTS Blackhole obfuscated Java EXE Download by
>>> Vulnerable Version - Likely Driveby";
>>> flowbits:isset,ET.http.javaclient.vulnerable;
>>> flow:established,to_client;
>>> content:"|0d 0a 9c 62 d8 66 66 66 66 54|"; classtype:trojan-activity;
>>> sid:2014909; rev:2;)
>>>
>>> emerging-current_events.rules:drop http $EXTERNAL_NET any -> $HOME_NET
>>> any
>>> (msg:"ET CURRENT_EVENTS Scalaxy Jar file"; flow:to_client,established;
>>> content:"|0d 0a 0d 0a|PK"; content:"C1.class"; fast_pattern; distance:0;
>>> content:"C2.class"; distance:0;
>>> flowbits:isset,ET.http.javaclient.vulnerable; classtype:trojan-activity;
>>> sid:2014983; rev:2;)
>>>
>>> emerging-current_events.rules:drop http $EXTERNAL_NET any -> $HOME_NET
>>> any
>>> (msg:"ET CURRENT_EVENTS SofosFO Jar file 10/17/12";
>>> flow:to_client,established; file_data; content:"PK"; within:2;
>>> content:"SecretKey.class"; fast_pattern; distance:0;
>>> content:"Mac.class";
>>> distance:0; flowbits:isset,ET.http.javaclient.vulnerable;
>>> classtype:trojan-activity; sid:2015812; rev:3;)
>>>
>>> emerging-current_events.rules:drop tcp $EXTERNAL_NET $HTTP_PORTS ->
>>> $HOME_NET any (msg:"ET CURRENT_EVENTS Metasploit CVE-2012-1723 Path
>>> (Seen
>>> in Unknown EK) 10/29/12"; flow:to_client,established; file_data;
>>> content:"PK"; within:2; content:"cve1723/";
>>> flowbits:isset,ET.http.javaclient.vulnerable; classtype:trojan-activity;
>>> sid:2015849; rev:3;)
>>>
>>> emerging-current_events.rules:drop http $EXTERNAL_NET any -> $HOME_NET
>>> any
>>> (msg:"ET CURRENT_EVENTS SofosFO Jar file 09 Nov 12";
>>> flow:to_client,established; file_data; content:"PK"; within:2;
>>> content:"SecretKey.class"; fast_pattern:only; content:"Anony";
>>> pcre:"/^(mous)?\.class/R"; flowbits:isset,ET.http.javaclient.vulnerable;
>>> classtype:trojan-activity; sid:2015876; rev:3;)
>>>
>>> emerging-current_events.rules:drop http $HOME_NET any -> $EXTERNAL_NET
>>> any
>>> (msg:"ET CURRENT_EVENTS RedKit Exploit Kit Vulnerable Java Payload
>>> Request
>>> URI (1)"; flowbits:isset,ET.http.javaclient.vulnerable;
>>> flow:established,to_server; content:"/33.html"; depth:8; http_uri;
>>> urilen:8; flowbits:set,et.exploitkitlanding; classtype:trojan-activity;
>>> sid:2015930; rev:2;)
>>>
>>> emerging-current_events.rules:drop http $HOME_NET any -> $EXTERNAL_NET
>>> any
>>> (msg:"ET CURRENT_EVENTS RedKit Exploit Kit vulnerable Java Payload
>>> Request
>>> to URI (2)"; flowbits:isset,ET.http.javaclient.vulnerable;
>>> flow:established,to_server; content:"/41.html"; depth:8; http_uri;
>>> urilen:8; flowbits:set,et.exploitkitlanding; classtype:trojan-activity;
>>> sid:2015931; rev:2;)
>>>
>>> emerging-trojan.rules:drop http $EXTERNAL_NET any -> $HOME_NET any
>>> (msg:"ET TROJAN Java EXE Download by Vulnerable Version - Likely
>>> Driveby";
>>> flowbits:isset,ET.http.javaclient.vulnerable;
>>> flow:established,to_client;
>>> content:"|0d 0a 0d 0a|MZ"; byte_jump:4,58,relative,little;
>>> content:"PE|00
>>> 00|"; distance:-64; within:4; threshold:type limit,track by_src,count
>>> 1,seconds 3; classtype:trojan-activity; sid:2013036; rev:7;)
>>>
>>>
>>>
>>>
>>>
>>> Am 22.08.13 11:01 schrieb "rmkml" unter <rmkml at yahoo.fr>:
>>>
>>>> Hi Stefan,
>>>>
>>>> Sorry I don't help,
>>>>
>>>> but I have a question: can you search on your rules if you have another
>>>> rule with flowbits but on drop mode please ?
>>>> (like this: grep "^drop.*set,ET.http.javaclient.vulnerable" *.rules)
>>>>
>>>> Regards
>>>> @Rmkml
>>>>
>>>>
>>>> On Thu, 22 Aug 2013, Stefan Sabolowitsch wrote:
>>>>
>>>>> Hi all,
>>>>> I have here҆
>>>>> Executing: suricata --user sguil --group sguil -c
>>>>> /etc/nsm/Wecker-intern/suricata.yaml -q 1 -l
>>>>> /nsm/sensor_data/Wecker-intern
>>>>> 22/8/2013 -- 06:00:26 - <Info> - This is Suricata version 1.4.5
>>>>> RELEASE
>>>>> 22/8/2013 -- 06:00:26 - <Info> - CPUs/cores online: 4
>>>>> 22/8/2013 -- 06:00:26 - <Info> - Enabling fail-open on queue
>>>>> 22/8/2013 -- 06:00:26 - <Info> - NFQ running in standard ACCEPT/DROP
>>>>> mode
>>>>>
>>>>> Have a problem with a rule, i don't understand here.
>>>>> Although this rule on alert marks, drop suricata the data stream.
>>>>> If i disable the rule, the data are forwarded (not drop) .
>>>>>
>>>>> Why ?
>>>>> Any idea?
>>>>>
>>>>> Thx
>>>>> Stefan
>>>>>
>>>>> rules:
>>>>> alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY
>>>>> Vulnerable Java Version 1.6.x Detected"; flow:established,to_server;
>>>>> content:"Java/1.6.0_"; ht
>>>>> tp_user_agent; content:!"51"; within:2; http_user_agent;
>>>>> flowbits:set,ET.http.javaclient.vulnerable; threshold: type limit,
>>>>> count
>>>>> 2, seconds 300, track by_s
>>>>> rc; reference:url,javatester.org/version.html; classtype:bad-unknown;
>>>>> sid:2011582; rev:31;)
>>>>>
>>>>> Fast.log
>>>>> 08/22/2013-08:36:38.770429  [**] [1:2011582:31] ET POLICY Vulnerable
>>>>> Java Version 1.6.x Detected [**] [Classification: Potentially Bad
>>>>> Traffic] [Priority: 2
>>>>> ] {TCP} 192.168.0.143:4803 -> 156.151.59.19:80
>>>>>
>>>>> drop.log
>>>>> 08/22/2013-08:36:38.770429: IN= OUT= SRC=192.168.0.143
>>>>> DST=156.151.59.19 LEN=221 TOS=0x00 TTL=128 ID=18727 PROTO=TCP SPT=4803
>>>>> DPT=80 SEQ=2569271462 ACK=1691
>>>>> 480634 WINDOW=64240 ACK PSH RES=0x00 URGP=0
>>>>>
>>>>>
>>>>>
>>>
>>>
>
>
>


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