Red Hat: 2010:0633-01: qspice: Important Advisory
Summary
The Simple Protocol for Independent Computing Environments (SPICE) is a
remote display protocol used in Red Hat Enterprise Linux for viewing
virtualized guests running on the Kernel-based Virtual Machine (KVM)
hypervisor, or on Red Hat Enterprise Virtualization Hypervisor.
It was found that the libspice component of QEMU-KVM on the host did not
validate all pointers provided from a guest system's QXL graphics card
driver. A privileged guest user could use this flaw to cause the host to
dereference an invalid pointer, causing the guest to crash (denial of
service) or, possibly, resulting in the privileged guest user escalating
their privileges on the host. (CVE-2010-0428)
It was found that the libspice component of QEMU-KVM on the host could be
forced to perform certain memory management operations on memory addresses
controlled by a guest. A privileged guest user could use this flaw to crash
the guest (denial of service) or, possibly, escalate their privileges on
the host. (CVE-2010-0429)
All qspice users should upgrade to these updated packages, which contain
backported patches to correct these issues.
Summary
Solution
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
References
https://www.redhat.com/security/data/cve/CVE-2010-0428.html https://www.redhat.com/security/data/cve/CVE-2010-0429.html http://www.redhat.com/security/updates/classification/#important
Package List
RHEL Desktop Multi OS (v. 5 client):
Source:
x86_64:
qspice-0.3.0-54.el5_5.2.x86_64.rpm
qspice-debuginfo-0.3.0-54.el5_5.2.x86_64.rpm
qspice-libs-0.3.0-54.el5_5.2.x86_64.rpm
qspice-libs-devel-0.3.0-54.el5_5.2.x86_64.rpm
RHEL Virtualization (v. 5 server):
Source:
x86_64:
qspice-0.3.0-54.el5_5.2.x86_64.rpm
qspice-debuginfo-0.3.0-54.el5_5.2.x86_64.rpm
qspice-libs-0.3.0-54.el5_5.2.x86_64.rpm
qspice-libs-devel-0.3.0-54.el5_5.2.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package
Topic
Updated qspice packages that fix two security issues are now available forRed Hat Enterprise Linux 5.The Red Hat Security Response Team has rated this update as havingimportant security impact. Common Vulnerability Scoring System (CVSS) basescores, which give detailed severity ratings, are available for eachvulnerability from the CVE links in the References section.
Topic
Relevant Releases Architectures
RHEL Desktop Multi OS (v. 5 client) - x86_64
RHEL Virtualization (v. 5 server) - x86_64
Bugs Fixed
568699 - CVE-2010-0428 libspice: Insufficient guest provided pointers validation
568701 - CVE-2010-0429 libspice: Relying on guest provided data structures to indicate memory allocation