lkml.org 
[lkml]   [1999]   [Jan]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: odd chown difference between 2.0 and 2.1pre kernels
"Stephen C. Tweedie" wrote:
>
> Hi,
>
> On Mon, 11 Jan 1999 15:40:02 +0000 (GMT), alan@lxorguk.ukuu.org.uk
> (Alan Cox) said:
>
> >> In message <19990109215152.C32046@kitenet.net>, Joey Hess writes:
>
> >> GAK!!! Security flaw here, methinks. chown should unconditionally clear
> >> setuid and setgid.
>
> > Except when done by root
>
> Is there any consensus on this? According to singleunix, suid and
> sgid on regular files get cleared unconditionally except when the
> caller has "appropriate privileges", but in that case the behaviour is
> implementation-defined. What do other unixen do in this case?

Solaris 2.5.1 retains suid and sgid...

# chmod g+x blub
# ls -l blub
-rw-rwxr-- 1 root other 0 Jan 12 08:23 blub
# chmod +x blub
# chmod +s blub
# ls -l blub
-rwsrwsr-- 1 root other 0 Jan 12 08:23 blub
# chown eastep blub
# ls -l blub
-rwsrwsr-- 1 eastep other 0 Jan 12 08:23 blub
# uname -a
SunOS eastep-5 5.5.1 Generic sun4m sparc SUNW,SPARCstation-20
#


-Tom
--
Tom Eastep
Compaq Computer Corporation
Enterprise Computing Group
Tandem Division
tom.eastep@compaq.com

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:49    [from the cache]
©2003-2011 Jasper Spaans. Advertise on this site