Where are the kernel updates?
[Posted May 28, 2003 by corbet]
On April 5, Florian Weimer sent
a note to the
linux-kernel mailing list describing a hashing vulnerability in the 2.4
kernel. His assessment:
It is possible to freeze machines with 1 GB of RAM and more with a
stream of 400 packets per second with carefully chosen source
addresses. Not good.
This problem was also described on this page last week.
We are, in other words, going on two months since this vulnerability was
publicly disclosed. A quick look at the LWN Vulnerability Database
entry for this problem, however, shows that only two distributors
(EnGarde and Red Hat) have updated their kernels to close this hole. So
all of the other distributors, many of which have a very good history of
quick response to security problems, are leaving their users exposed on
this one.
This vulnerability may seem less urgent because it cannot be used to gain
root access to a target machine. It can, however, be used to take a
system off the net. It allows a remote attacker to obtain the results of a
distributed denial of service attack without that attacker having to
arrange the "distributed" part. It is a serious problem which will
certainly be exploited, with unpleasant results. The distributors owe
their users a fix.
(
Log in to post comments)