Re: security/rkhunter without hashes after recent STABLE-13 update

From: Warner Losh <imp_at_bsdimp.com>
Date: Wed, 7 Jul 2021 14:35:11 -0600
On Wed, Jul 7, 2021 at 2:24 PM Michael Grimm <trashcan_at_ellael.org> wrote:

> Warner Losh <imp_at_bsdimp.com> wrote:
> >
> > On Wed, Jul 7, 2021 at 12:47 PM Michael Grimm <trashcan_at_ellael.org>
> wrote:
> >> Warner Losh <imp_at_bsdimp.com> wrote:
>
> >>> Sorry for any hassle this work is causing.
> >>
> >> No big deal for rkhunter, a workaround exists ;-)
> >
> > I think the reason is that it automatically switched to using sha256sum
> > because it was present, but it didn't automatically change
> #HASH_FLD_IDX=4
> > to be 1. The shell script is tricky enough that I've not looked through
> it
> > all. I'd argue this is a bug in the get_sha_hash_function which doesn't
> > adjust the HASH_FLD_IDX based on which version it finds. Instead, it sets
> > it unconditionally to 4 on *BSD or DragonFly.
> >
> > Warner
> >
> > P.S. I think it needs something like the following updated
> > patch-files_rkhunter and/or changes upstream. I don't know what this port
> > does, apart from what I've just read. Can you see if this fixes this?
>
>
> Your rkhunter script seems to be different to mine …
>
>         MWN> patch < rkhunter.diff
>         Hmm...  Looks like a unified diff to me…
>         The text leading up to this was:
>         —————————————
>         |--- files/rkhunter.orig        2018-02-24 16:08:27.000000000 -0700
>         |+++ files/rkhunter     2021-07-07 13:38:56.094378000 -0600
>         —————————————
>         Patching file rkhunter using Plan A…
>         Hunk #1 succeeded at 4751.
>         Hunk #2 failed at 7525.
>         Hunk #3 succeeded at 19734 (offset 3 lines).
>         Hunk #4 failed at 19810.
>         2 out of 4 hunks failed--saving rejects to rkhunter.rej
>         done
>
> But anyway, you nailed it! That fixes rkhunter. It will now produce hashes
> for both /sbin/sha256 and /sbin/sha256sum.
>
> The attached patch (diff to new rkhunter script with both succeeding
> hunks) will work for the rkhunter-1.4.6 script.
>

Great! I see you've cc'd lukasz. I'll assume that he can commit it, but if
there's an issue, please let me know!

Warner


> Thanks and with kind regards,
> Michael
>
>
>
Received on Wed Jul 07 2021 - 20:35:11 UTC

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