Re: network printers

Printers are the first thing I look for to perform a stealthy interal pen test.

Nmap port 9100 and idle scan the inside.

Also good place for an attacker to store files but I don't store files during a pen test.

I guess it would also be a good place to gain information if you had the time to spend.

My favorite is to change the display greeting. Hehe

J. Perrymon
On the road- This is from my BlackBerry

-----Original Message-----
From: Justin <justinvinn@xxxxxxxxx>
Date: Mon, 12 Dec 2005 17:50:04
To:mark_brunner@xxxxxxxxxxx
Cc:pen-test@xxxxxxxxxxxxxxxxxxxxxxx
Subject: Re: network printers

Mark,

I have found that pft from http://www.phenoelit.de is quite helpful
when performing audits on printers.

Unfortunatly, I have yet to see a guide to securing printers, although
FX's chapter in_Stealing The Network: How to 0wn_ the box, was quite
infomative on the subject of attacking a networked printer (BTW, his
chapter was "h3X's adventures in networkland").

Compromising a printer can yeild some useful results, especially if
its an HP printer with Java installed. Also, you may have gained some
admin passwords to try.

And on a somewhat childish side note, if you telnet to port 9100 on a
printer, type a few lines and then kill the connection via ^], the
printer will print out what you typed, although it will be
unformatted.

Hope some of that helped.

-- Justin

On 12/10/05, Mark Brunner <mark_brunner@xxxxxxxxxxx> wrote:
> Haven't looked at printers in a while.
> Are there any best practices hardening and audit docs for printers?
>
> Mark
>
> -----Original Message-----
> From: Ben Nagy [mailto:ben@xxxxxxxx]
> Sent: Saturday, December 10, 2005 1:24 AM
> To: pen-test@xxxxxxxxxxxxxxxxxxxxxxx
> Subject: RE: empty sa passwords on network printers ??
>
>
> Not sure what you mean by SA password, but HP printers run Java, which is
> turing complete. If you have full access to the printer you can make it do
> absolutely anything you want - it's just as good (or better) as owning a
> workstation.
>
> Check out some of the phenoelit stuff to scare yourself:
> http://www.phenoelit.de/stuff/defconX.pdf
>
> Cheers,
>
> ben
>
> > -----Original Message-----
> > From: Jason Rusch [mailto:rusch.j@xxxxxxxxx]
> > Sent: Saturday, December 10, 2005 2:51 AM
> > To: pen-test@xxxxxxxxxxxxxxxxxxxxxxx
> > Subject: empty sa passwords on network printers ??
> >
> > curious whats peoples opinion on the risk level etc concerning empty
> > SA passwords on network printers?
> >
> >
> > Jason P. Rusch, CISSP
> > Sr. Information Security Administrator
> > Infosec-rusch
> > Tampa, FL 33619
>
>
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Hackers are concentrating their efforts on attacking applications on your
website. Up to 75% of cyber attacks are launched on shopping carts, forms,
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futile against web application hacking. Check your website for vulnerabilities
to SQL injection, Cross site scripting and other web attacks before hackers do!
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-------------------------------------------------------------------------------


Relevant Pages

  • Re: network printers
    ... > Printers are the first thing I look for to perform a stealthy interal pen test. ... >>Audit your website security with Acunetix Web Vulnerability Scanner: ... Up to 75% of cyber attacks are launched on shopping carts, forms, ... Cross site scripting and other web attacks before hackers do! ...
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  • network printers
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