X-Git-Url: http://ftp.carnet.hr/carnet-debian/scm?a=blobdiff_plain;f=etc%2Frules%2Fweb_rules.xml;h=bba91f4a11912e156aaff879b479a2cbaaa31d8b;hb=refs%2Ftags%2Fdebian%2F2.8.3-1;hp=9f0b00e06d9c835d2144542150779e152ecb70f5;hpb=301048b51990573e58a30dc4a5bb4ec285cad554;p=ossec-hids.git

diff --git a/etc/rules/web_rules.xml b/etc/rules/web_rules.xml
index 9f0b00e..bba91f4 100755
--- a/etc/rules/web_rules.xml
+++ b/etc/rules/web_rules.xml
@@ -1,4 +1,5 @@
-<!-- @(#) $Id$
+<!-- @(#) $Id: ./etc/rules/web_rules.xml, 2013/02/28 dcid Exp $
+
   -
   -  Official Web access rules for OSSEC.
   -
@@ -35,14 +36,14 @@
 
   <rule id="31102" level="0">
     <if_sid>31101</if_sid>
-    <url>.jpg$|.gif$|favicon.ico$|.png$|robots.txt$|.css$|.js$</url>
+    <url>.jpg$|.gif$|favicon.ico$|.png$|robots.txt$|.css$|.js$|.jpeg$</url>
     <compiled_rule>is_simple_http_request</compiled_rule>
     <description>Ignored extensions on 400 error codes.</description>
   </rule>
   
   <rule id="31103" level="6">
     <if_sid>31100</if_sid>
-    <url>='|select%20|select+|insert%20|%20from%20|%20where%20|union%20|</url>
+    <url>=select%20|select+|insert%20|%20from%20|%20where%20|union%20|</url>
     <url>union+|where+|null,null|xp_cmdshell</url>
     <description>SQL injection attempt.</description>
     <group>attack,sql_injection,</group>
@@ -53,10 +54,10 @@
     
     <!-- Attempt to do directory transversal, simple sql injections,
       -  or access to the etc or bin directory (unix). -->
-    <url>%027|%00|%01|%7f|%2E%2E|%0A|%0D|../..|..\..|echo;|..|</url>
-    <url>cmd.exe|root.exe|_mem_bin|msadc|/winnt/|</url>
+    <url>%027|%00|%01|%7f|%2E%2E|%0A|%0D|../..|..\..|echo;|</url>
+    <url>cmd.exe|root.exe|_mem_bin|msadc|/winnt/|/boot.ini|</url>
     <url>/x90/|default.ida|/sumthin|nsiislog.dll|chmod%|wget%|cd%20|</url>
-    <url>cat%20|exec%20|rm%20</url>
+    <url>exec%20|../..//|%5C../%5C|././././|2e%2e%5c%2e|\x5C\x5C</url>
     <description>Common web attack.</description>
     <group>attack,</group>
   </rule>
@@ -76,6 +77,22 @@
     <group>attack,</group>
   </rule>
 
+  <rule id="31110" level="6">
+    <if_sid>31100</if_sid>
+    <url>?-d|?-s|?-a|?-b|?-w</url>
+    <description>PHP CGI-bin vulnerability attempt.</description>
+    <group>attack,</group>
+  </rule>
+
+  <rule id="31109" level="6">
+    <if_sid>31100</if_sid>
+    <url>+as+varchar</url>
+    <regex>%2Bchar\(\d+\)%2Bchar\(\d+\)%2Bchar\(\d+\)%2Bchar\(\d+\)%2Bchar\(\d+\)%2Bchar\(\d+\)</regex>
+    <description>MSSQL Injection attempt (/ur.php, urchin.js)</description>
+    <group>attack,</group>
+  </rule>
+
+
   <!-- If your site have a search engine, you may need to ignore
     - it in here.
     -->
@@ -85,13 +102,14 @@
     <description>Ignored URLs for the web attacks</description>
   </rule>
 
-  <rule id="31115" level="13" maxsize="2900">
+  <rule id="31115" level="13" maxsize="7900">
     <if_sid>31100</if_sid>
     <description>URL too long. Higher than allowed on most </description>
     <description>browsers. Possible attack.</description>
     <group>invalid_access,</group>
   </rule>
 
+
   <!-- 500 error codes, server error
     - http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
     -->
@@ -130,11 +148,18 @@
     <description>Ignoring google/msn/yahoo bots.</description>
   </rule>
 
+  <!-- Ignoring nginx 499's -->
+  <rule id="31141" level="0">
+    <if_sid>31101</if_sid>
+    <id>^499</id>
+    <description>Ignored 499's on nginx.</description>
+  </rule>
+
   
-  <rule id="31151" level="10" frequency="10" timeframe="120">
+  <rule id="31151" level="10" frequency="12" timeframe="90">
     <if_matched_sid>31101</if_matched_sid>
     <same_source_ip />
-    <description>Mutiple web server 400 error codes </description>
+    <description>Multiple web server 400 error codes </description>
     <description>from same source ip.</description>
     <group>web_scan,recon,</group>
   </rule>
@@ -162,24 +187,39 @@
     <group>attack,</group>
   </rule>
   
-  <rule id="31161" level="10" frequency="8" timeframe="120">
+  <rule id="31161" level="10" frequency="12" timeframe="120">
     <if_matched_sid>31121</if_matched_sid>
     <same_source_ip />
     <description>Multiple web server 501 error code (Not Implemented).</description>
     <group>web_scan,recon,</group>
   </rule>
   
-  <rule id="31162" level="10" frequency="5" timeframe="120">
+  <rule id="31162" level="10" frequency="12" timeframe="120">
     <if_matched_sid>31122</if_matched_sid>
     <same_source_ip />
     <description>Multiple web server 500 error code (Internal Error).</description>
     <group>system_error,</group>
   </rule>
   
-  <rule id="31163" level="10" frequency="8" timeframe="120">
+  <rule id="31163" level="10" frequency="12" timeframe="120">
     <if_matched_sid>31123</if_matched_sid>
     <same_source_ip />
     <description>Multiple web server 503 error code (Service unavailable).</description>
     <group>web_scan,recon,</group>
   </rule>
+
+  <rule id="31164" level="6">
+    <if_sid>31100</if_sid>
+    <url>=%27|select%2B|insert%2B|%2Bfrom%2B|%2Bwhere%2B|%2Bunion%2B</url>
+    <description>SQL injection attempt.</description>
+    <group>attack,sqlinjection,</group>
+  </rule>
+
+  <rule id="31165" level="6">
+    <if_sid>31100</if_sid>
+    <url>%EF%BC%87|%EF%BC%87|%EF%BC%87|%2531|%u0053%u0045</url>
+    <description>SQL injection attempt.</description>
+    <group>attack,sqlinjection,</group>
+  </rule>
+
 </group> <!-- Web access log -->