Incidents
DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 22 2008 12:55AM
ponchovaldes gmail com (4 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 24 2008 11:55AM
david bizeul (david bizeul gmail com) (1 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 28 2008 06:58PM
Jon R. Kibler (Jon Kibler aset com)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 24 2008 04:05AM
dxp (dxp2532 gmail com) (1 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 25 2008 12:31PM
Ronald van der Westen (rvdwesten gmail com) (2 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our firstcompetition Jan 25 2008 06:00PM
Cedric Blancher (blancher cartel-securite fr) (1 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 28 2008 04:59PM
Jeff Plewes (plewes gmail com) (4 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 29 2008 12:06AM
Eduardo Tongson (propolice gmail com)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our firstcompetition Jan 28 2008 10:46PM
Graeme Fowler (G E Fowler lboro ac uk) (1 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 28 2008 11:57PM
Eduardo Tongson (propolice gmail com) (2 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 29 2008 06:59PM
Valdis Kletnieks vt edu (1 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 30 2008 12:22AM
Eduardo Tongson (propolice gmail com) (2 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 30 2008 06:15PM
Jason Stelzer (jason stelzer gmail com) (1 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 31 2008 02:49AM
Eduardo Tongson (propolice gmail com) (1 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 31 2008 04:54PM
Jamie Riden (jamie riden gmail com) (1 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Feb 01 2008 12:07AM
Eduardo Tongson (propolice gmail com)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our firstcompetition Jan 30 2008 05:50PM
Graeme Fowler (G E Fowler lboro ac uk)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our firstcompetition Jan 29 2008 08:39AM
Graeme Fowler (G E Fowler lboro ac uk) (1 replies)
On Tue, 2008-01-29 at 07:57 +0800, Eduardo Tongson wrote:
> You make it sound so easy to gain root. I am aware that the Linux
> kernel is not 100% guaranteed free from privilege escalation bugs. But
> it is very important to know the escalation vector. Given that the
> kernel used is fully updated and root SSH login dismissed do you know
> a way of getting root without an unknown kernel bug?

Nope. However, having spent several years in high-volume relatively
cheap bulk hosting, I can say with experience that if you permit
unrestricted PHP or CGI execution on your system then it's only a matter
of time before some customer uploads something with a hole so big you
could drive a bus through it. At that point, the bus becomes the local
user - whether the webserver user (in the case of PHP as a module, or
CGI with no privilege separation like suEXEC) or the hosted user (CGI or
PHP with a wrapper to change user, often used for accounting purposes as
well as privilege separation).

Once an unknown remote user is on your system, the glib comment I made
was "all bets are off - they're not root yet". I don't know what setuid
root scripts exist on the system in question, nor what other mods may
have been made which expose privilege escalation issues. I'm pointing
out what I believe could be a (the) likely attack vector, from
experience.

It could equally well be something else, but before we all run around
shouting that "the sky is falling" we should probably examine what we
do, or can, know first.

Graeme

[ reply ]
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 29 2008 04:25PM
Paul Schmehl (pauls utdallas edu)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 28 2008 09:15PM
Gary Baribault (gary baribault net)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 28 2008 07:24PM
Paul Schmehl (pauls utdallas edu) (1 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 28 2008 08:17PM
Jeff Plewes (plewes gmail com)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 23 2008 03:04AM
Jeff Plewes (plewes gmail com) (4 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 24 2008 02:53AM
Eduardo Tongson (propolice gmail com)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 23 2008 10:11PM
Florian Weimer (fw deneb enyo de) (1 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 24 2008 02:46AM
Jeff Plewes (plewes gmail com) (1 replies)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 24 2008 08:03AM
Mark Gottschalk (mgotts 2roads com)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 23 2008 06:28PM
Gary Baribault (gary baribault net)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 23 2008 05:15PM
Stephen John Smoogen (smooge gmail com)
Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition Jan 22 2008 05:03PM
Stephen John Smoogen (smooge gmail com)


 

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