Changsha nan Ren yuan software 001

Source: Internet
Author: User

Technology sharing: How to bypass WAF (Web application firewall)

Patchwork method:

If some strings are filtered, we can add part of the "original string" to both sides.

Sql:selselectect verversionsion ();

???? Xss:<scr<script>rip>alalertert</scr</script>rip>

Cause: Using the WAF's incompleteness, validating only one string at a time or filtering the string is incomplete.

This section tells you that WAF will always have its flaws, and nothing can be perfect.

Changsha nan Ren yuan software 001

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