Security Basics: Re: buffer overflows

[Sanjay R <2sanjayr () gmail com>]

Hi,
as suggested by Fuggiano, by default, gcc has stack protection
(StackShield). so, if you got the error similar to
**** Stack Smashing detected****.. try to disable it by
gcc --no-stack-protector -o vuln vuln.c
 Please let us also know if still you are not able to run the
examples, so that we will also be aware of this.
-sanjay

On Fri, Jan 9, 2009 at 5:17 PM, kalgecin <kalgecin () gmail com> wrote:
> All i did was disable the va randromization by running
> "echo 0 > /proc/sys/kernel/randomize_va_space"
> The inbuilt gcc protection and other means of protection were enabled.
>
> On 1/9/09, Giuseppe Fuggiano <giuseppe.fuggiano () gmail com> wrote:
> > 2009/1/8 kalgecin <kalgecin () gmail com>:
> > > after reading many papers on the subject only to be disappointed to
> > > find out that the examples don't work, i decided to write my own
> > > please read it at <kalgecin.b0x.com>.
> > > i need all the comments that you can offer either positive or negative.
> > Did you disable the stack protector compiling that examples?
> >
> > --
> > Giuseppe Fuggiano


-- 
Computer Security Learner