Snort mailing list archives
Re: downloading rules from snort.org while snort is running on your server.
From: "Frontgate Lab" <mdiwan () wagweb com>
Date: Fri, 12 Oct 2001 12:12:54 -0400
Ah.. Thank you Matthew, I think I like that.. even if its redundant... i'm surprised that the download did not trigger any other alerts though.. given the contents of the snort rules tarballs. Matthew Collins wrote:
All the snort rule is doing is looking for the content window.open("readme.eml" coming from a web server. As the rule matches itself, downloading the rule from a web server will trigger the rule. Note, only the first rule will match, the second will not, as it checks URI content, not just any content."Frontgate Lab" <mdiwan () wagweb com> 12/10/01 16:45:23 >>>Yes i did download rules from snort.org BUT.. why would that trigger the readme.eml content alert? [root@fglab snort]# cat web-misc.rules | grep readme.eml alert tcp $EXTERNAL_NET 80 -> $HOME_NET any (msg:"WEB-MISC readme.eml autoload attempt"; flags:A+; content:"window.open(\"readme.eml\""; nocase; classtype:attempted-user; sid:1290; rev:3; reference:url,www.cert.org/advisories/CA-2001-26.html;) alert tcp $EXTERNAL_NET 80 -> $HOME_NET any (msg:"WEB-MISC readme.eml attempt"; flags:A+; uricontent:"readme.eml"; nocase; classtype:attempted-user; sid:1284; rev:3; reference:url,www.cert.org/advisories/CA-2001-26.html;) Madhav Matthew Collins wrote:Look at the source port. 80 -> YourIP:35434. Been downloading some rules from the snort web site?"Frontgate Lab" <mdiwan () wagweb com> 12/10/01 16:02:13 >>>Hiya .. errm.. i think this is bad... i belive it is nimda: Oct 11 11:48:35 fglab snort[4483]: [1:1284:3] WEB-MISC readme.eml attempt [Classification: Attempted User Privilege Gain] [Priority: 8]: {TCP} 151.196.107.166:80 -> 192.168.150.203:35434 nslookup results: nslookup 151.196.107.166 Note: nslookup is deprecated and may be removed from future releases. Consider using the `dig' or `host' programs instead. Run nslookup with the `-sil[ent]' option to prevent this message from appearing. Server: 207.150.196.199 Address: 207.150.196.199#53 Non-authoritative answer: 166.107.196.151.in-addr.arpa name = snort.sourcefire.com. Authoritative answers can be found from: 166.107.196.151.in-addr.arpa nameserver = ns1.sourcefire.com. 166.107.196.151.in-addr.arpa nameserver = ns2.sourcefire.com. ns1.sourcefire.com internet address = 151.196.107.164 ns2.sourcefire.com internet address = 151.196.107.165
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Current thread:
- Re: MISC IP Reserved bit set, (continued)
- Re: MISC IP Reserved bit set Erek Adams (Oct 09)
- RE: MISC IP Reserved bit set Ofir Arkin (Oct 15)
- Re: MISC IP Reserved bit set Miller, Toby (Oct 09)
- Re: MISC IP Reserved bit set Martin Roesch (Oct 11)
- Re: MISC IP Reserved bit set Frontgate Lab (Oct 12)
- Re: MISC IP Reserved bit set Frontgate Lab (Oct 12)
- Re: MISC IP Reserved bit set Martin Roesch (Oct 14)
- Re: MISC IP Reserved bit set Martin Roesch (Oct 11)
- Re: MISC IP Reserved bit set Matthew Collins (Oct 12)
- Re: MISC IP Reserved bit set Frontgate Lab (Oct 12)
- Re: MISC IP Reserved bit set Matthew Collins (Oct 12)
- Re: downloading rules from snort.org while snort is running on your server. Frontgate Lab (Oct 12)