[Snort-sigs] SQL Injection

Jeff Pratt jpratt at simplepart.com
Wed Sep 26 09:02:37 EDT 2018


I am not seeing SNORT picking up union select SQL injection attempts on my
WAN interface even though the rules exist to inspect the packets any one
else seen this and how did you resolve it? I added these custom rules to
try and catch them but one always gets through so the guy hitting us is
using attempting once per ip and moving on to a different ip any thoughts?







alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"SQL union select
- possible sql injection attempt - GET parameter";
flow:to_server,established; content:"union"; fast_pattern:only; http_uri;
content:"select"; nocase; http_uri; pcre:"/union\s+(all\s+)?select\s+/Ui";
metadata:policy max-detect-ips drop, policy security-ips drop, service
http; reference:bugtraq,14876; reference:bugtraq,21227;
reference:bugtraq,22582; reference:bugtraq,24067; reference:cve,2005-3004;
reference:cve,2006-0065; reference:cve,2006-0154; reference:cve,2006-2835;
reference:cve,2006-6268; reference:cve,2007-1021; reference:cve,2007-2824;
reference:cve,2011-1667; classtype:misc-attack; sid:13990; rev:25;)



alert tcp $EXTERNAL_NET any -> $SQL_SERVERS 1433 (msg:"SQL Suspicious SQL
ansi_padding option"; flow:to_server,established;
content:"a|00|n|00|s|00|i|00|_|00|p|00|a|00|d|00|d|00|i|00|n|00|g|00|";
pcre:"/s\x00e\x00t\x00(\s\x00)+a\x00n\x00s\x00i\x00_\x00p\x00a\x00d\x00d\x00i\x00n\x00g\x00(\s\x00)+o\x00f\x00f\x00/smi";
metadata:policy max-detect-ips drop, policy security-ips drop;
reference:cve,2008-0106; reference:url,
msdn.microsoft.com/en-us/library/ms187403.aspx; classtype:policy-violation;
sid:16075; rev:7;)



alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"SQL generic
sql insert injection attempt - GET parameter"; flow:to_server,established;
content:"insert"; fast_pattern:only; http_uri;
pcre:"/insert\s+into\s+[^\/\\]+/Ui"; metadata:policy max-detect-ips drop,
policy security-ips drop, service http; reference:cve,2012-2998;
reference:url,www.securiteam.com/securityreviews/5DP0N1P76E.html;
classtype:web-application-attack; sid:13513; rev:19;)



alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"SQL union select
- possible sql injection attempt - POST parameter";
flow:to_server,established; content:"union"; fast_pattern:only;
http_client_body; content:"select"; nocase; http_client_body;
pcre:"/union(%20|\+)+(all(%20|\+)+)?select(%20|\+)/Pi"; metadata:policy
max-detect-ips drop, policy security-ips drop, service http;
classtype:misc-attack; sid:15874; rev:13;)



alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"SERVER-WEBAPP
Joomla Saxum Picker SQL injection attempt"; flow:to_server,established;
content:"/index.php"; nocase; http_uri; content:"option=com_saxumpicker";
fast_pattern:only; http_uri; content:"publicid="; nocase; http_uri;
pcre:"/[?&]publicid=[^&]*?([\x27\x22\x3b\x23]|\x2f\x2a|\x2d\x2d)/Ui";
metadata:policy balanced-ips drop, policy max-detect-ips drop, policy
security-ips drop, service http; reference:cve,2018-7178;
classtype:web-application-attack; sid:46338; rev:1;)



alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"SERVER-WEBAPP
Joomla Saxum Picker SQL injection attempt"; flow:to_server,established;
content:"/index.php"; nocase; http_uri; content:"option=com_saxumpicker";
fast_pattern:only; http_client_body; content:"publicid="; nocase;
http_client_body;
pcre:"/(^|&)publicid=[^&]*?([\x27\x22\x3b\x23]|\x2f\x2a|\x2d\x2d|%27|%22|%3b|%23|%2f%2a|%2d%2d)/Pim";
metadata:policy balanced-ips drop, policy max-detect-ips drop, policy
security-ips drop, service http; reference:cve,2018-7178;
classtype:web-application-attack; sid:46337; rev:1;)



alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"SQL char and
sysobjects - possible sql injection recon attempt";
flow:to_server,established; content:"CHAR|28|"; nocase; http_uri;
content:"CHAR|28|"; distance:0; nocase; http_uri; content:"CHAR|28|";
distance:0; nocase; http_uri; content:"[sysobjects]"; distance:0; nocase;
http_uri; metadata:policy max-detect-ips drop, policy security-ips drop,
service http; reference:url,isc.sans.org/diary.html?storyid=3823;
classtype:web-application-attack; sid:15584; rev:8;)



alert tcp $EXTERNAL_NET any -> $SQL_SERVERS 1433 (msg:"SQL Suspicious SQL
ansi_padding option"; flow:to_server,established; content:"ansi_padding";
pcre:"/set\s+ansi_padding\s+off/smi"; metadata:policy max-detect-ips drop,
policy security-ips drop; reference:cve,2008-0106; reference:url,
msdn.microsoft.com/en-us/library/ms187403.aspx; classtype:policy-violation;
sid:16074; rev:4;)



alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"SQL generic
sql exec injection attempt - GET parameter"; flow:to_server,established;
content:"exec"; fast_pattern:only; http_uri; pcre:"/exec\s+master/Ui";
metadata:policy max-detect-ips drop, policy security-ips drop, service
http; reference:url,www.securiteam.com/securityreviews/5DP0N1P76E.html;
classtype:web-application-attack; sid:13512; rev:15;)



alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"SQL generic
sql insert injection attempt - POST parameter"; flow:to_server,established;
content:"insert "; fast_pattern:only; http_client_body;
pcre:"/insert\s+into\s+[^\/\\]+/Pi"; metadata:policy max-detect-ips drop,
policy security-ips drop, service http; reference:url,
www.securiteam.com/securityreviews/5DP0N1P76E.html;
classtype:web-application-attack; sid:15875; rev:12;)



alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"SQL generic
sql update injection attempt - GET parameter"; flow:to_server,established;
content:"update"; fast_pattern:only; http_uri;
pcre:"/update\s+[^\/\\]+set\s+[^\/\\]+/Ui"; metadata:policy max-detect-ips
drop, policy security-ips drop, service http; reference:url,
www.securiteam.com/securityreviews/5DP0N1P76E.html;
classtype:web-application-attack; sid:13514; rev:17;)



alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"SQL generic
sql exec injection attempt - POST parameter"; flow:to_server,established;
content:"exec "; fast_pattern; nocase; http_client_body; content:"master ";
nocase; http_client_body; pcre:"/exec\s+master/Pi"; metadata:policy
max-detect-ips drop, policy security-ips drop, service http; reference:url,
www.securiteam.com/securityreviews/5DP0N1P76E.html;
classtype:web-application-attack; sid:15877; rev:9;)



alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"SQL union select
- possible sql injection attempt - POST parameter";
flow:to_server,established; content:"union"; fast_pattern:only;
http_client_body; content:"select"; http_client_body; content:"union
select";nocase; http_client_body;
pcre:"/union(%20|\+)+(all(%20|\+)+)?select(%20|\+)/Pi"; metadata:policy
max-detect-ips drop, policy security-ips drop, service http;
classtype:misc-attack; sid:15874; rev:13;)



alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"SQL generic
convert injection attempt - GET parameter"; flow:to_server,established;
content:"convert|28|"; fast_pattern:only; http_uri; metadata:policy
max-detect-ips drop, policy security-ips drop, ruleset community, service
http; reference:url,www.securiteam.com/securityreviews/5DP0N1P76E.html;
classtype:web-application-attack; sid:26925; rev:2;)



JEFF PRATT

Director Of Networking And Security

E.     jpratt at simplepart.com

O.     (404)620-9764 ext.120

C.     (678)572-9679


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