ftp.rules

snort入侵检测规则文件2.4 Snort是众所周知的网络入侵检测工具

# bad ftp commands
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP SITE ZIPCHK overflow attempt"; flow:to_server,established; content:"SITE"; nocase; content:"ZIPCHK"; distance:1; nocase; isdataat:100,relative; pcre:"/^SITE\s+ZIPCHK\s[^\n]{100}/smi"; reference:cve,2000-0040; classtype:attempted-admin; sid:1921; rev:5;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP SITE NEWER attempt"; flow:to_server,established; content:"SITE"; nocase; content:"NEWER"; distance:1; nocase; pcre:"/^SITE\s+NEWER/smi"; reference:cve,1999-0880; reference:nessus,10319; classtype:attempted-dos; sid:1864; rev:7;)

alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP SITE EXEC attempt"; flow:to_server,established; content:"SITE"; nocase; content:"EXEC"; distance:0; nocase; pcre:"/^SITE\s+EXEC/smi"; reference:arachnids,317; reference:bugtraq,2241; reference:cve,1999-0080; reference:cve,1999-0955; classtype:bad-unknown; sid:361; rev:15;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP EXPLOIT STAT * dos attempt"; flow:to_server,established; content:"STAT"; nocase; pcre:"/^STAT\s+[^\n]*\x2a/smi"; reference:bugtraq,4482; reference:cve,2002-0073; reference:nessus,10934; reference:url,www.microsoft.com/technet/security/bulletin/MS02-018.mspx; classtype:attempted-dos; sid:1777; rev:8;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP EXPLOIT STAT ? dos attempt"; flow:to_server,established; content:"STAT"; nocase; pcre:"/^STAT\s+[^\n]*\x3f/smi"; reference:bugtraq,4482; reference:cve,2002-0073; reference:nessus,10934; reference:url,www.microsoft.com/technet/security/bulletin/MS02-018.mspx; classtype:attempted-dos; sid:1778; rev:8;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP tar parameters"; flow:to_server,established; content:" --use-compress-program "; nocase; reference:arachnids,134; reference:bugtraq,2240; reference:cve,1999-0202; reference:cve,1999-0997; classtype:bad-unknown; sid:362; rev:12;)

# bad directories
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP CWD ~root attempt"; flow:to_server,established; content:"CWD"; nocase; content:"~root"; distance:1; nocase; pcre:"/^CWD\s+~root/smi"; reference:arachnids,318; reference:cve,1999-0082; classtype:bad-unknown; sid:336; rev:10;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP CWD ..."; flow:to_server,established; content:"CWD"; nocase; content:"..."; distance:0; pcre:"/^CWD\s[^\n]*?\.\.\./smi"; reference:bugtraq,9237; classtype:bad-unknown; sid:1229; rev:7;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP CWD ~ attempt"; flow:to_server,established; content:"CWD"; nocase; pcre:"/^CWD\s+~/smi"; reference:bugtraq,2601; reference:bugtraq,9215; reference:cve,2001-0421; classtype:denial-of-service; sid:1672; rev:11;)

# vulnerabilities against specific implementations of ftp
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP serv-u directory transversal"; flow:to_server,established; content:".%20."; nocase; reference:bugtraq,2052; reference:cve,2001-0054; classtype:bad-unknown; sid:360; rev:7;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP wu-ftp bad file completion attempt ["; flow:to_server,established; content:"~"; content:"["; distance:0; reference:bugtraq,3581; reference:bugtraq,3707; reference:cve,2001-0550; reference:cve,2001-0886; classtype:misc-attack; sid:1377; rev:15;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP wu-ftp bad file completion attempt {"; flow:to_server,established; content:"~"; content:"{"; distance:0; reference:bugtraq,3581; reference:bugtraq,3707; reference:cve,2001-0550; reference:cve,2001-0886; classtype:misc-attack; sid:1378; rev:15;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP RNFR ././ attempt"; flow:to_server,established; content:"RNFR "; nocase; content:" ././"; nocase; classtype:misc-attack; sid:1622; rev:5;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP command overflow attempt"; flow:to_server,established,no_stream; dsize:>100; reference:bugtraq,4638; reference:cve,2002-0606; classtype:protocol-command-decode; sid:1748; rev:8;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP LIST directory traversal attempt"; flow:to_server,established; content:"LIST"; nocase; content:".."; distance:1; content:".."; distance:1; reference:bugtraq,2618; reference:cve,2001-0680; reference:cve,2002-1054; reference:nessus,11112; classtype:protocol-command-decode; sid:1992; rev:8;)


# BAD FILES
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP .forward"; flow:to_server,established; content:".forward"; reference:arachnids,319; classtype:suspicious-filename-detect; sid:334; rev:5;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP .rhosts"; flow:to_server,established; content:".rhosts"; reference:arachnids,328; classtype:suspicious-filename-detect; sid:335; rev:5;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP authorized_keys"; flow:to_server,established; content:"authorized_keys"; classtype:suspicious-filename-detect; sid:1927; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP passwd retrieval attempt"; flow:to_server,established; content:"RETR"; nocase; content:"passwd"; reference:arachnids,213; classtype:suspicious-filename-detect; sid:356; rev:5;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP shadow retrieval attempt"; flow:to_server,established; content:"RETR"; nocase; content:"shadow"; classtype:suspicious-filename-detect; sid:1928; rev:3;)

# suspicious login attempts
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP ADMw0rm ftp login attempt"; flow:to_server,established; content:"USER"; nocase; content:"w0rm"; distance:1; nocase; pcre:"/^USER\s+w0rm/smi"; reference:arachnids,01; classtype:suspicious-login; sid:144; rev:9;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP adm scan"; flow:to_server,established; content:"PASS ddd@|0A|"; reference:arachnids,332; classtype:suspicious-login; sid:353; rev:6;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP iss scan"; flow:to_server,established; content:"pass -iss@iss"; reference:arachnids,331; classtype:suspicious-login; sid:354; rev:5;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP pass wh00t"; flow:to_server,established; content:"pass wh00t"; nocase; reference:arachnids,324; classtype:suspicious-login; sid:355; rev:5;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP piss scan"; flow:to_server,established; content:"pass -cklaus"; classtype:suspicious-login; sid:357; rev:5;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP saint scan"; flow:to_server,established; content:"pass -saint"; reference:arachnids,330; classtype:suspicious-login; sid:358; rev:5;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP satan scan"; flow:to_server,established; content:"pass -satan"; reference:arachnids,329; classtype:suspicious-login; sid:359; rev:5;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP USER format string attempt"; flow:to_server,established; content:"USER"; nocase; pcre:"/^USER\s[^\n]*?%[^\n]*?%/smi"; reference:bugtraq,7474; reference:bugtraq,7776; reference:bugtraq,9262; reference:bugtraq,9402; reference:bugtraq,9600; reference:bugtraq,9800; reference:cve,2004-0277; reference:nessus,10041; reference:nessus,11687; classtype:misc-attack; sid:2178; rev:16;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP PASS format string attempt"; flow:to_server,established; content:"PASS"; nocase; pcre:"/^PASS\s[^\n]*?%[^\n]*?%/smi"; reference:bugtraq,7474; reference:bugtraq,9262; reference:bugtraq,9800; reference:cve,2000-0699; classtype:misc-attack; sid:2179; rev:6;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP MKDIR format string attempt"; flow:to_server,established; content:"MKDIR"; nocase; pcre:"/^MKDIR\s[^\n]*?%[^\n]*?%/smi"; reference:bugtraq,9262; classtype:misc-attack; sid:2332; rev:1;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP RENAME format string attempt"; flow:to_server,established; content:"RENAME"; nocase; pcre:"/^RENAME\s[^\n]*?%[^\n]*?%/smi"; reference:bugtraq,9262; classtype:misc-attack; sid:2333; rev:1;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP LIST buffer overflow attempt"; flow:to_server,established; content:"LIST"; nocase; pcre:"/^LIST\s[^\n]{100,}/smi"; reference:bugtraq,10181; reference:bugtraq,6869; reference:bugtraq,7251; reference:bugtraq,7861; reference:bugtraq,8486; reference:bugtraq,9675; reference:cve,1999-0349; reference:cve,1999-1510; reference:cve,2000-0129; reference:url,www.microsoft.com/technet/security/bulletin/MS99-003.mspx; classtype:misc-attack; sid:2338; rev:13;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP LIST integer overflow attempt"; flow:to_server,established; content:"LIST"; nocase; pcre:"/^LIST\s+\x22-W\s+\d+/smi"; reference:bugtraq,8875; reference:cve,2003-0853; reference:cve,2003-0854; classtype:misc-attack; sid:2272; rev:4;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 3535 (msg:"FTP Yak! FTP server default account login attempt"; flow:to_server,established; content:"USER"; nocase; content:"y049575046"; nocase; pcre:"/^USER\s+y049575046/smi"; reference:bugtraq,9072; classtype:suspicious-login; sid:2334; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 3535 (msg:"FTP RMD / attempt"; flow:to_server,established; content:"RMD"; nocase; pcre:"/^RMD\s+\x2f$/smi"; reference:bugtraq,9159; classtype:attempted-dos; sid:2335; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP invalid MDTM command attempt"; flow:to_server,established; content:"MDTM"; nocase; pcre:"/^MDTM \d+[-+]\D/smi"; reference:bugtraq,9751; reference:cve,2001-1021; reference:cve,2004-0330; classtype:attempted-admin; sid:2416; rev:5;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP format string attempt"; flow:to_server,established; content:"%"; pcre:"/\s+.*?%.*?%/smi"; classtype:string-detect; sid:2417; rev:1;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP RETR format string attempt"; flow:to_server,established; content:"RETR"; nocase; pcre:"/^RETR\s[^\n]*?%[^\n]*?%/smi"; reference:bugtraq,9800; classtype:attempted-admin; sid:2574; rev:1;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP RNFR overflow attempt"; flow:to_server,established; content:"RNFR"; nocase; isdataat:100,relative; pcre:"/^RNFR\s[^\n]{100}/smi"; classtype:attempted-admin; sid:3077; rev:1;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP REST with numeric argument"; flow:to_server,established; content:"REST"; nocase; pcre:"/REST\s+[0-9]+\n/i"; reference:bugtraq,7825; classtype:attempted-recon; sid:3460; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP PORT bounce attempt"; flow:to_server,established; content:"PORT"; nocase; ftpbounce; pcre:"/^PORT/smi"; classtype:misc-attack; sid:3441; rev:1;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 2100 (msg:"FTP ORACLE password buffer overflow attempt"; flow:to_server,established; content:"pass"; nocase; pcre:"/^PASS\s+[^\n]{100}/smi"; reference:bugtraq,8375; classtype:attempted-user; sid:3532; rev:1;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"FTP SITE INDEX format string attempt"; flow:to_server,established; content:"SITE"; nocase; content:"INDEX"; distance:0; nocase; pcre:"/^SITE\s+INDEX\s[^\n]*?%[^\n]*?%/smi"; classtype:bad-unknown; sid:3523; rev:2;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 2100 (msg:"FTP ORACLE TEST command buffer overflow attempt"; flow:to_server,established; content:"TEST"; nocase; pcre:"/^TEST\s+[^\n]{100,}/smi"; reference:bugtraq,8375; classtype:misc-attack; sid:3630; rev:1;)
alert tcp $EXTERNAL_NET any -> $HOME_NET 2100 (msg:"FTP ORACLE user name buffer overflow attempt"; flow:to_server,established; content:"user"; nocase; pcre:"/^USER\s+[^\n]{100,}/smi"; reference:bugtraq,8375; classtype:attempted-user; sid:3631; rev:1;)