[FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-14:03.pkg
Dave Duchscher
daved at nostrum.com
Sun Jun 15 12:12:30 UTC 2014
I have had a few surprises with FreeBSD over the years and with the new ports system has provided quite a few of them but this update takes the cake. We have our own package repository with custom options. We liked and adopted pkgng early. We also have a lot of automation. With this update, all of a sudden, we have a new repository configured on our system (/etc/FreeBSD.conf). Lets say, I was very surprised. It is true that mistakes happen. Maybe its ours for not fully understand what was being done. In any event, this definitely caused lots of issues for us and has wasted a lot of my time.
Dave
On May 13, 2014, at 7:00 PM, FreeBSD Errata Notices <errata-notices at freebsd.org> wrote:
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> =============================================================================
> FreeBSD-EN-14:03.pkg Errata Notice
> The FreeBSD Project
>
> Topic: pkg bootstrapping, configuration and public keys
>
> Category: core, packages
> Module: pkg
> Announced: 2014-05-13
> Credits: Baptiste Daroussin, Bryan Drewery
> Affects: All versions of FreeBSD prior to 10.0-RELEASE
> Corrected: 2014-04-15 23:40:47 UTC (stable/8, 8.4-STABLE)
> 2014-05-13 23:24:32 UTC (releng/8.4, 8.4-RELEASE-p10)
> 2014-03-11 14:48:44 UTC (stable/9, 9.2-STABLE)
> 2014-05-13 23:24:14 UTC (releng/9.2, 9.2-RELEASE-p6)
> 2014-05-13 23:24:14 UTC (releng/9.1, 9.1-RELEASE-p13)
>
> For general information regarding FreeBSD Errata Notices and Security
> Advisories, including descriptions of the fields above, security
> branches, and the following sections, please visit
> <URL:http://security.freebsd.org/>.
>
> I. Background
>
> The pkg(7) utility is the new package management tool for FreeBSD. The
> FreeBSD project has provided official pkg(7) packages since October 2013
> and signed packages since the pkg-1.2 release in November 2013. The
> signature checking requires known public keys to be installed locally.
> The repository configuration must be installed as well.
>
> The base system also includes a pkg(7) bootstrap tool that installs the
> latest real pkg(7) package. The bootstrap tool knows where to find the
> official pkg(7) package but once that is installed the real pkg(7) will
> not know where to find official packages, nor have the known public key
> for signature checking.
>
> The bootstrap tool was also improved in 10.0-RELEASE to check the
> signature on the pkg(7) package it is installing.
>
> II. Problem Description
>
> Only FreeBSD 10.0 has been released with the official repository
> configuration, known public keys, and a bootstrap tool that checks the
> signature of the pkg(7) package it is installing.
>
> To allow packages to be used on a system, the configuration must be
> manually setup and keys securely fetched and installed to the proper
> location.
>
> III. Impact
>
> Releases before 10.0 require manual configuration. Manually configuring the
> pkg(7) signatures could result in insecurely installing the keys or leaving
> the signature checking disabled.
>
> The bootstrap tool is not secure on releases prior to 10.0 due to not checking
> the signature and could result in having an unofficial pkg(7) installed due to
> MITM attacks.
>
> IV. Workaround
>
> To securely install pkg(7) on releases prior to 10.0, install it from ports
> obtained from a secure portsnap checkout:
>
> # portsnap fetch extract
> # echo "WITH_PKGNG=yes" >> /etc/make.conf
> # make -C /usr/ports/ports-mgmt/pkg install clean
>
> If this is an existing system it may be converted to pkg(7) as well by running:
>
> # pkg2ng
>
> After this is done /usr/ports may be removed if no longer required.
>
> To workaround the configuration and keys being missed, apply the solution in
> this Errata.
>
> V. Solution
>
> No solution is provided for pkg(7) bootstrap signature checking on releases prior
> to 10.0. Upgrading to 10.0 or stable/9 after r263038 will suffice.
>
> To install the configuration and public key in a secure means, perform one of
> the following:
>
> 1) Upgrade your system to a supported FreeBSD stable or release / security
> branch (releng) dated after the correction date.
>
> 2) To update your present system via a source code patch:
>
> The following patches have been verified to apply to the applicable
> FreeBSD release branches.
>
> a) Download the relevant patch from the location below, and verify the
> detached PGP signature using your PGP utility.
>
> [FreeBSD 9.2]
> # fetch http://security.FreeBSD.org/patches/EN-14:03/pkg-en-releng-9.2.patch
> # fetch http://security.FreeBSD.org/patches/EN-14:10/pkg-en-releng-9.2.patch.asc
> # gpg --verify pkg-en-releng-9.2.patch.asc
>
> [FreeBSD 9.1]
> # fetch http://security.FreeBSD.org/patches/EN-14:03/pkg-en-releng-9.1.patch
> # fetch http://security.FreeBSD.org/patches/EN-14:10/pkg-en-releng-9.1.patch.asc
> # gpg --verify pkg-en-releng-9.1.patch.asc
>
> [FreeBSD 8.4]
> # fetch http://security.FreeBSD.org/patches/EN-14:03/pkg-en-releng-8.4.patch
> # fetch http://security.FreeBSD.org/patches/EN-14:03/pkg-en-releng-8.4.patch.asc
> # gpg --verify pkg-en-releng-8.4.patch.asc
>
> b) Execute the following commands as root:
>
> # cd /usr/src
> # patch < /path/to/patch
> # cd /usr/src/etc/pkg
> # mkdir -p /etc/pkg /usr/share/keys/pkg/trusted /usr/share/keys/pkg/revoked
> # make install
> # cd /usr/src/share/keys/pkg
> # make install
>
> 3) To update your system via a binary patch:
>
> Systems running a RELEASE version of FreeBSD on the i386 or amd64
> platforms can be updated via the freebsd-update(8) utility:
>
> # freebsd-update fetch
> # freebsd-update install
>
> VI. Correction details
>
> The following list contains the revision numbers of each file that was
> corrected in FreeBSD.
>
> Branch/path Revision
> - -------------------------------------------------------------------------
> stable/8/ r264519
> releng/8.4/ r265989
> stable/9/ r263937 (*)
> releng/9.1/ r265988
> releng/9.2/ r265988
> - -------------------------------------------------------------------------
>
> (*) The actual required changeset consists a series of changes, including
> r263023,r258550,r263050,r263053 and r263937.
>
> To see which files were modified by a particular revision, run the
> following command, replacing NNNNNN with the revision number, on a
> machine with Subversion installed:
>
> # svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
>
> Or visit the following URL, replacing NNNNNN with the revision number:
>
> <URL:http://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
>
> VII. References
>
> The latest revision of this Errata Notice is available at
> http://security.FreeBSD.org/advisories/FreeBSD-EN-14:03.pkg.asc
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