Re: [WEB SECURITY] Re: Backdoors in custom software applications

[Prasad N Shenoy <prasad.shenoy () gmail com>]

I second that. Mostly pages that do not appear to be reachable from application menus but are only know to the 
attacker/insider/perp who created the backdoor.

On that note ( hope I am not hijacking the thread) are there any automated ways to detect backdoors and logic bombs? 
Static Analysis anyone?

Sent from my iPhone

On Dec 16, 2010, at 6:01 PM, Ivan Arce <ivan.arce () coresecurity com> wrote:

> On 12/16/2010 05:18 PM, Sebastian Schinzel wrote:
> > Hi all,
> >
> > I am looking for ideas how intentional backdoors in real software applications may look like.
> >
> > Wikipedia already provides a good list of backdoors that were found in software applications: 
> > http://en.wikipedia.org/wiki/Backdoor_(computing)
> >
> > Has anyone encountered backdoors during code audits, penetration tests, data breaches? 
> > Could you share some details of how the backdoor looked like? I am really interested in
> > a technical and abstract description of the backdoor (e.g. informal descriptions or pseudo-code).
> > Anonymized and off-list replies are also very welcome.
> >
> > Thanks,
> > Sebastian
>
> I'd risk to say that the most common case is simply finding
> authentication credentials hard-coded in the application (CWE-798)
>
> There is a large list of applications that suffer from this problem, for
> example:
>
> http://www.us-cert.gov/cas/techalerts/TA05-224A.html
>
> There are more sophisticated backdoors of course but I think hard-coded
> credentials is the most common case by far.
>
> -ivan
>
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