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Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
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77d448e15d
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Daniel P. Berrange 77d448e15d Add support for using 3-arg pkcheck syntax for process (CVE-2013-4311) 
With the existing pkcheck (pid, start time) tuple for identifying
the process, there is a race condition, where a process can make
a libvirt RPC call and in another thread exec a setuid application,
causing it to change to effective UID 0. This in turn causes polkit
to do its permission check based on the wrong UID.

To address this, libvirt must get the UID the caller had at time
of connect() (from SO_PEERCRED) and pass a (pid, start time, uid)
triple to the pkcheck program.

This fix requires that libvirt is re-built against a version of
polkit that has the fix for its CVE-2013-4288, so that libvirt
can see 'pkg-config --variable pkcheck_supports_uid polkit-gobject-1'

Signed-off-by: Colin Walters <walters@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
(cherry picked from commit 922b7fda77)
Signed-off-by: Eric Blake <eblake@redhat.com>

Conflicts:
	configure.ac - context
	libvirt.spec.in - context of indentation
	src/access/viraccessdriverpolkit.c - not present on this branch
2013-09-18 08:36:01 -06:00
.gnulib@b4938324b7 build: avoid infinite autogen loop 2012-10-27 15:06:31 -04:00
build-aux maint: fix up copyright notice inconsistencies 2012-09-20 16:30:55 -06:00
daemon Add support for using 3-arg pkcheck syntax for process (CVE-2013-4311) 2013-09-18 08:36:01 -06:00
docs Convert libxl driver to Xen 4.2 2013-01-07 10:40:02 -07:00
examples maint: fix up copyright notice inconsistencies 2012-09-20 16:30:55 -06:00
gnulib build: fix fresh checkout on RHEL5 2012-04-19 17:11:43 -06:00
include maint: fix up copyright notice inconsistencies 2012-09-20 16:30:55 -06:00
m4 build: avoid -Wno-format on new-enough gcc 2012-10-18 13:11:29 -04:00
po Prep for release 0.10.2.7 2013-08-01 17:48:55 -04:00
python Properly parse (unsigned) long long 2012-10-18 13:19:51 -04:00
src Include process start time when doing polkit checks 2013-09-18 08:33:49 -06:00
tests bitmap: add virBitmapCountBits 2013-08-20 14:53:23 +02:00
tools virsh: edit: don't leak XML string on reedit or redefine 2013-06-26 17:43:28 +02:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.gitignore tools: Only install guests init script if --with-init=script=redhat 2013-01-07 11:26:52 -07:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap Autogenerate AUTHORS 2012-10-27 15:07:44 -04:00
AUTHORS.in Doug Goldstein gained commit capability 2012-12-09 16:28:00 -05:00
autobuild.sh Switch automated builds to use Mingw64 toolchain instead of Mingw32 2012-06-25 10:41:10 +01:00
autogen.sh build: fix incremental autogen.sh when no AUTHORS is present 2012-12-09 16:53:41 -05:00
bootstrap maint: regenerate bootstrap 2012-07-27 09:34:04 -06:00
bootstrap.conf Autogenerate AUTHORS 2012-10-27 15:07:44 -04:00
cfg.mk build: fix incremental autogen.sh when no AUTHORS is present 2012-12-09 16:53:41 -05:00
ChangeLog-old virterror.c: Fix several spelling mistakes 2012-02-03 11:32:51 -07:00
configure.ac Add support for using 3-arg pkcheck syntax for process (CVE-2013-4311) 2013-09-18 08:36:01 -06:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING Update how to compile with -Werror 2012-10-17 16:18:22 -04:00
libvirt.pc.in build: silence warning from autoconf 2012-05-30 09:22:02 -06:00
libvirt.spec.in Add support for using 3-arg pkcheck syntax for process (CVE-2013-4311) 2013-09-18 08:36:01 -06:00
Makefile.am Autogenerate AUTHORS 2012-10-27 15:07:44 -04:00
Makefile.nonreentrant Ban use of all inet_* functions 2010-10-22 11:59:23 +01:00
mingw-libvirt.spec.in parallels: add driver skeleton 2012-08-01 11:44:26 +08:00
README Correct typos in the documentation (Atsushi SAKAI) 2008-01-24 10:15:13 +00:00
README-hacking maint: relax git minimum version 2010-02-24 14:29:27 -05:00
run.in syntax-check: fix run.in 2012-09-18 13:59:53 +02:00
TODO Update todo list file to point at bugzilla/website 2010-10-13 16:45:26 +01:00

README 

         LibVirt : simple API for virtualization

  Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.

Daniel Veillard <veillard@redhat.com>