Re: Linux kernel sysctl() vulnerability

[Aleksander Kamil Modzelewski]

On Sat, Feb 10, 2001 at 10:28:01AM +0100, Florian Weimer wrote:
> > There exists a Linux system call sysctl() which is used to query and
> > modify runtime system settings. Unprivileged users are permitted to query
> > the value of many of these settings.
> It appears that all current Linux kernel version (2.2.x and 2.4.x) are
> vulnerable.  Right?
But not in Alan Cox'es version.
In 2.4.1-ac4:

/* The generic string strategy routine: */
int sysctl_string(ctl_table *table, int *name, int nlen,
                  void *oldval, size_t *oldlenp,
                  void *newval, size_t newlen, void **context)
{
        size_t l, len;

Another thing is, that t shows, that someone already noticed the
problem :/

Greets
Aleksander Kamil Modzelewski
ps. This is my first posting. Hope I did not make a fall-start :)
pps. OK, I did, but this is a long story :)

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