Hey Steven , all, SMC> How many people who audit PHP applications verify that the second SMC> argument to str_repeat() is valid? Nobody, because the misbehaviour of this given function is a _bug_ and thus not documented. Without documenting the valid input ranges, there can be no "validation", only "guessing that this is now valid". SMC> How many otherwise innocent functions in PHP can have unexpected SMC> results if an attacker can control one of the parameters? Expect the same to hold true for almost any other language. The libc's these days are relatively "bug-free", but the libraries of PHP etc. have not undergone the same amount of auditing. SMC> And maybe entire classes of vulnerabilities that are assumed to be SMC> specific to a particular language, aren't. Any vulnerability existing in C is very likely going to occur in other languages which (in the end) chain down to C-like code. Cheers, dullien PS: Let us please just keep the entire Java discussion out of this :) -- Mit freundlichen Grüssen dullien@gmx.de mailto:dullien@gmx.de
