hey joey, On Thu, May 11, 2006 at 05:46:16PM +0200, Martin Schulze wrote: > > - crafting a simple "user-agent" that can illustrate the vulnerability > > by sending a negative or 0 value for content length to a nagios cgi > > (it doesn't have to actually inject any shell code or anything, just > > PoC would be fine by me). > > Why user-agent? "All" you need to do is add some variables, so that
as a general rule i feel much more comfortable having some kind of PoC
code available that will tell me that my patch works. granted, in this
case it's a rather straightforward patch, but still...
> the Content-Length is either exactly INT_MAX or even larger, both
> cause an integer overrun, which cause a negative malloc() which cause
> a situation in which the attacker may control some memory they shouldn't.
ah yes.. good point about INT_MAX. i'll forward this upstream as well,
since i don't think ethan considered this.
sean
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