Vulnerability Development mailing list archives

Re: linux userland ip spoofing vulnerability


From: fygrave () SCORPIONS NET (CyberPsychotic)
Date: Tue, 26 Oct 1999 14:45:24 +0600


On Wed, 27 Oct 1999 out of nowhere Boo Hampshire spoke:

~:There is code + documentation attached.
~:

 this isn't vulnerability. AFAIK this is required by posix, that bind
should allow you to bind any specific IP adress, not just 0.0.0.0:0. Many
networking daemons rely on this feature to provide some specific
configuration twirks. However if you don't feel comfortable that your
users can bind local ports, you may apply patch by route(?) which requires
a user to be in specific group to do so.. Alternatively you could just
`fix' socketcall from within a module.


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