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[bug#32545] [PATCH] gnu: dropbear: Fix CVE-2018-15599.

From: Ludovic Courtès
Subject: [bug#32545] [PATCH] gnu: dropbear: Fix CVE-2018-15599.
Date: Wed, 29 Aug 2018 23:32:51 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux)


Clément Lassieur <address@hidden> skribis:

> Ludovic Courtès <address@hidden> writes:
>> Hi!
>> Leo Famulari <address@hidden> skribis:
>>> Dropbear users, please test!
>>> * gnu/packages/patches/dropbear-CVE-2018-15599.patch: New file.
>>> * gnu/ (dist_patch_DATA): Add it.
>>> * gnu/packages/ssh.scm (dropbear)[source]: Use it.
>> I haven’t tested it but the patch LGTM, FWIW.  You can also run “make
>> check-system TESTS=dropbear” if you haven’t already, to make sure the
>> basics work.
> Leo said on IRC that this produces 0 tests, and I can reproduce this:
>     $ ~/.guix$ make check-system TESTS="dropbear"
>     Compiling Scheme modules...
>     Running 0 system tests...
>     TOTAL: 0

“rm gnu/tests/ssh.go && make” will fix it.

The reason is that 6772ed1e07d6b8ce557199d91aaa1442c77186c7 changed the
ABI of <openssh-configuration>.  Thus, gnu/tests/ssh.go is stale, and if
you try to load it manually, you get the “ABI mismatch” error that
invites you to recompile.

The command above uses (guix discovery) to find system tests exported by
modules under (gnu tests …).  Since it fails to load (gnu tests ssh), it
just silently skips it and concludes that there’s no “dropbear” test.

Commit d258c791441b46705f4360cf141343363d1751f2 has a warning displayed
in this case.


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