Ken Smith has announced the availability of the second release candidate for Freebsd7.3: “The third and what should be last of the test builds for the 7.3-RELEASE cycle, 7.3-RC2, is available for amd64, i386, pc98, and sparc64 architectures. The target schedule, as well as the current status of the release is available here. The schedule has slipped by a bit over a week so the actual target for the release announcement is really about a week and a half from …
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Development Release: FreeBSD 7.3-RC2 Available
Run fsck in Freebsd to repair a dirty filesystem
During the 10-second count-down during boot, press the space
bar once. You should see the prompt
boot>
boot -s
and press “Enter”. This will enable you to boot
into “single-user” mode.
The machine should show the usual device probes, but
instead of mounting
filesystems and starting daemons, you will get a
prompt like:
Enter full pathname of shell or RETURN for /bin/sh:
At that point, press “Enter”. The prompt should
read
This means that you are in single-user mode; you …
Exploit in Freebsd 8 root vulnerability(local r00t 0day) and the patch
http://lists.grok.org.uk/pipermail/full-disclosure/2009-November/071686.html
===============
** FreeBSD local r00t 0day
Discovered & Exploited by Nikolaos Rangos also known as Kingcope.
Nov 2009 “BiG TiME”
“Go fetch your FreeBSD r00tkitz” // http://www.youtube.com/watch?v=dDnhthI27Fg
There is an unbelievable simple local r00t bug in recent FreeBSD versions.
I audited FreeBSD for local r00t bugs a long time *sigh*. Now it pays out.
The bug resides in the Run-Time Link-Editor (rtld).
Normally rtld does not allow dangerous environment variables like LD_PRELOAD
to be set when executing setugid binaries like “ping” or “su”.
With a rather simple technique rtld can …
Freebsd booting single user mode- reset root password in freebsd
To boot into single user mode at startup:
- hit any key APART FROM ENTER when the system counts down from 10.
This will take you to the boot prompt.
- type ‘boot -s’ to boot into single user mode
After booting into single user mode, to be able to write any changes
/etc to disk you need to change the status of the / partition from read
only to read/write mode. To do this execute:
/sbin/mount -u /
Note you should use the full path because /sbin …
