Re: [linux-security] Malicious Linux modules (fwd)

Tall cool one (ice@mama.indstate.edu)
Fri, 10 Oct 1997 14:07:55 -0500


Runar Jensen <zarq@1stnet.com> writes:
> As halflife demonstrated in Phrack 50 with his linspy project, it is trivial
> to patch any system call under Linux from within a module. This means that

It's also trivial to modify your example module to protect your syscall
table, or at least notify when your table has been modified. Turn-about is
fair play.

> The implications should be obvious. Once a compromise has taken place,
> nothing can be trusted, the operating system included.

Like, duh...

> Be afraid. Be very afraid. ;)

Just yet another reason for a complete re-install after a compromise.

- Steve

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