Re: [ Hackerslab bug_paper ] Linux dump buffer overflow

[venglin () FREEBSD LUBLIN PL (Przemyslaw Frasunek)]

On 02-Mar-2000 Derek Callaway wrote:
> I believe this overflow is rather difficult to exploit, (although, not
> impossible) as a result of a setuid(getuid()) before the offending code

it does setuid(), but NOT setgid(). still vulnerable.

the major problem is how to pass valid **envp to stack and let getenv()
succesfully return. probably possible by giving pointer to some valid
environment in shared libs.

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