full-disclosure - Partial Solution to SUID Problems

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

From: domino at asgardnet.org (Ciro)
Subject: Partial Solution to SUID Problems

On Thu, 4 Dec 2003, Gino Thomas wrote:

>
> I asked some ppl the same question, answers vary. On one hand some ppl
> trust the suids and claim that messing up with them will open new
> problems and that there are also many other ways to get root (kernel,
> libc, daemons,...) on the other hand ppl agreed with me that if i don't
> need uucp, why should it be on my box anyway (and that suid or sgid).
> As said, i disabled all suids except 'su', so a user can't use
> 'netstat', 'ping' or even 'man' anymore, but i do not want that on a
> bastion host anyway, eh? Mounting whats left on a separate partition
> seems to be as logical as doing that for /home, /tmp,...
>
> I would like to see a detailed discussion about this, too.
>

The thing that screams "bad idea" or at least "inconvienient pain in the
neck" to me is that, on the off chance that a wide-spread exploit is
found and you have to "make world" or whatever, it puts them right back
and you have to do it again.

Of course, I'm a perl scripter, so by definition I'm lazy[0] ;)

-C

[0]Larry Wall said it, not me. <g>

"Why would burgulars need to look for a backdoor when they can climb in
through Windows?" --Norman L DeForest, in NANAE
"You know how dumb the average luser is? Well, half of 'em are dumber
than that" -- The Roadie, in NANAE