Re: fdmount buffer overflow

[k8e () TURBOLINUX COM (Katherine M. Moussouris)]

FYI, TurboLinux is also NOT affected "as shipped" by this
particular vulnerability, because users are never automatically added to
the floppy group.

fdmount *is* suid root, however, and we will be releasing an updated
package shortly.

-k8e

On Tue, 23 May 2000, Vandoorselaere Yoann wrote:

> Chmouel Boudjnah <chmouel () mandrakesoft com> writes:
>
> > Greg Olszewski <noop () NWONKNU ORG> writes:
> >
> > > Debian 2.1, 2.2, 2.3:  fdmount is NOT installed suid.
> > > Mandrake 7.0: Vulnerable
> >
> > All our security system is handle via msec, in this case we add a user
> > in the floppy group only if we are in level >= 3.
> >
> > So we are not affected if by default you did an Server install or set
> > your security level to 4 5.
> >
> > Indeed we are affected if (and only if) the user is in the floppy
> > group. A fix (remove suid root) come soon.
>
> Here is a patch to correct the fdmount problem...
>
> --- fdmount.c.orig      Tue May 23 18:48:40 2000
> +++ fdmount.c   Tue May 23 18:49:04 2000
> @@ -127,9 +127,10 @@
>
>  void errmsg(char *text,...) {
>      char buff[80];
> +
>      va_list p;
>      va_start(p,text);
> -    vsprintf(buff,text,p);
> +    vsnprintf(buff, 80, text,p);
>      va_end(p);
>      if(use_syslog)
>         syslog(LOG_ERR, "%s: %s\n",curdev,buff);
>
>
> --
>                    -- Yoann,  http://www.mandrakesoft.com/~yoann/
>      It is well known that M$ products don't call free() after a malloc().
>      The Unix community wish them good luck for their future developments.

> > > > > > > > > > > > > > > > > > > > > > > > > > > <<<<<<<<<<<<<<<<<<<<<<<<<<<<
Katie Moussouris                Software Engineer
k8e () turbolinux com           Security Tzarina
(650)228-5000                   TurboLinux, Inc.