Re: Ask about HTTP Parser with Directory Traversal String
"Joel Esler \(jesler\) via Snort-sigs" <[email protected]>
| Newsgroups | gmane.comp.security.ids.snort.sigs |
|---|---|
| Message-ID | <[email protected]> |
Hello Seong, Please take a look at: HTTP Evasions Revisited<https://www.snort.org/documents/http-evasions-revisited> -- Joel Esler Strategy, Cisco Talos Intelligence Group On Oct 12, 2021, at 03:55, Seong Gyu Choi via Snort-sigs <[email protected]<mailto:[email protected]>> wrote: Hi, Snort Team I have a question about the abbreviation of HTTP parser direction traversal string( "../" or "\..") . URI : /cgi-bin/../../etc/passwd After Pass HTTP Parser : /etc/passwd When URI pass http parser, all the characters in front of Directory Traversal string(/../) fly away, so I wonder why you do this. Isn't it normal to stay like the below? What i thought After Pass HTTP Parser : /cgi-bin/etc/passwd If there's a reason why your team designed it like this, please let me know. Regards, CHOI _______________________________________________ Snort-sigs mailing list [email protected]<mailto:[email protected]> https://lists.snort.org/mailman/listinfo/snort-sigs Please visit http://blog.snort.org for the latest news about Snort! Please follow these rules: https://snort.org/faq/what-is-the-mailing-list-etiquette Visit the Snort.org to subscribe to the official Snort ruleset, make sure to stay up to date to catch the most <a href=" https://snort.org/downloads/#rule-downloads">emerging threats</a>! _______________________________________________ Snort-sigs mailing list [email protected] https://lists.snort.org/mailman/listinfo/snort-sigs Please visit http://blog.snort.org for the latest news about Snort! Please follow these rules: https://snort.org/faq/what-is-the-mailing-list-etiquette Visit the Snort.org to subscribe to the official Snort ruleset, make sure to stay up to date to catch the most <a href=" https://snort.org/downloads/#rule-downloads">emerging threats</a>!