Package: pbuilder
Version: 0.189
Severity: important
Tags: security
Hi.
debootstrap (unlike cdebootstrap IIRC) does not check signatures on
any packages per default, but only when the "--keyring" option is used.
This has the potential security problem, that users are building (and
thus executing code) that is not verified.
I would suggest that you at least add a:
DEBOOTSTRAPOPTS="--keyring=/set-this-file" to the default template.
But this still is,.. well not a good solution, so I'd suggest the following:
1) Add options to pbuilder itself:
- A mandatory --keyring= option to specify the keyring to be used and
that is passed on to [c]debootstrab
- A option like --do-not-verify-signatures (including some warnings
that this is dangerous),.. and only if this is set,... --keyring may
be omitted.
2) If nothing off the above is specified, pbuilder should fail.
I'm not sure about the following:
- As pbuilder installs stuff inside the already bootstrapped chroot,
there may be additional possibilities for insecure packages. But I
assume you use always apt there, right? And this should use keys,..
well at least with deboostrap they're copied into the chroot
(IIRC),... not sure about cdebootstrap.
- Is this already a problem with current build daemons or whatever?
And should we inform those guys on this problem?
Regards,
Chris.
-- System Information:
Debian Release: squeeze/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.30-heisenberg (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=en_DE.UTF-8, LC_CTYPE=en_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages pbuilder depends on:
ii coreutils 7.5-4 GNU core utilities
ii debconf [debconf-2.0] 1.5.27 Debian configuration
management sy
ii debianutils 3.2.1 Miscellaneous utilities
specific t
ii debootstrap 1.0.15 Bootstrap a basic Debian system
ii wget 1.11.4-4 retrieves files from the web
Versions of packages pbuilder recommends:
ii devscripts 2.10.54 scripts to make the life
of a Debi
ii fakeroot 1.13 Gives a fake root environment
ii sudo 1.7.2p1-1 Provide limited super
user privile
Versions of packages pbuilder suggests:
pn cowdancer <none> (no description available)
pn gdebi <none> (no description available)
pn pbuilder-uml <none> (no description available)
-- debconf information:
* pbuilder/mirrorsite: ftp://ftp.de.debian.org/debian/
pbuilder/nomirror:
* pbuilder/rewrite: false
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