Re: portage/rsync question

On Tue, Apr 6, 2010 at 10:26 PM, Butterworth, John W. <
[email protected]> wrote:

>  Hi.  I have a security-related question for Portage/rsync:
>
>
>
> If someone makes a change to a copy of a program (say a backdoor added to
> apache) hosted on a public mirror, will the sync’ing between the public
> mirror and the main rotation mirror determine that it's corrupted (via 'bad'
> checksum) on the public-mirror side and replace it?
>
>
>
>
> If it's hosted @ Gentoo, if the main server is intact, the next sync will
overwrite the mirror-local copy

If it's not hosted on on Gentoo's mirror, Gentoo's sync'ing is unrelated
(and I understand that's the scenario you refer to)

Anyways, unless the *ebuild* was *also* poisoned (which can't happen by a
cracker changing stuff at apache.org), when you try to *emerge* the package,
emerge will fail because Portage verifies various different hash signatures
on the source files - which are embedded in the portage package tree [1].

HTH,

-- Shimi

[1] Try: cat /usr/portage/www-servers/apache/Manifest