Re: Security Problems; knfsd

Bill Hawes (whawes@transmeta.com)
Mon, 31 Aug 1998 08:35:20 -0700


Alan Cox wrote:

> knfsd is called inode operations directly. Unfortunately its not also
> duplicating the security checking preamble that leads up to them. This
> means we have problems where any NFS client can create device files as
> any user for example.
>
> In paticular it skips the read only file system check, the only root
> can make non fifo devices check and other stuff. Skipping the ROFS check
> could cause pretty serious problems alone.

OK, I'll take a look at what needs to be changed. Basically you're saying
that the security checks in knfsd should parallel those for mknod?

Regards,
Bill

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