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The virDomainSaveImageGetXMLDesc API is taking a path parameter, which can point to any path on the system. This file will then be read and parsed by libvirtd running with root privileges. Forbid it on read-only connections. Fixes: CVE-2019-10161 Reported-by: Matthias Gerstner <mgerstner@suse.de> Signed-off-by: Ján Tomko <jtomko@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> (cherry picked from commit aed6a032cead4386472afb24b16196579e239580) Signed-off-by: Ján Tomko <jtomko@redhat.com> Conflicts: src/libvirt-domain.c src/remote/remote_protocol.x Upstream commit 12a51f372 which introduced the VIR_DOMAIN_SAVE_IMAGE_XML_SECURE alias for VIR_DOMAIN_XML_SECURE is not backported. Just skip the commit since we now disallow the whole API on read-only connections, regardless of the flag. Signed-off-by: Ján Tomko <jtomko@redhat.com>
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>