Ranjivost programskog paketa qemu-kvm

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Red Hat Security Advisory

Synopsis: Low: qemu-kvm security and bug fix update
Advisory ID: RHSA-2014:1669-02
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-1669.html
Issue date: 2014-10-20
CVE Names: CVE-2014-3615
=====================================================================

1. Summary:

Updated qemu-kvm packages that fix one security issue and one bug are now
available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Low security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) – x86_64
Red Hat Enterprise Linux Client Optional (v. 7) – x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) – x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) – x86_64
Red Hat Enterprise Linux Server (v. 7) – x86_64
Red Hat Enterprise Linux Server Optional (v. 7) – x86_64
Red Hat Enterprise Linux Workstation (v. 7) – x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) – x86_64

3. Description:

KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on AMD64 and Intel 64 systems. The qemu-kvm package provides the
user-space component for running virtual machines using KVM.

An information leak flaw was found in the way QEMU’s VGA emulator accessed
frame buffer memory for high resolution displays. A privileged guest user
could use this flaw to leak memory contents of the host to the guest by
setting the display to use a high resolution in the guest. (CVE-2014-3615)

This issue was discovered by Laszlo Ersek of Red Hat.

This update also fixes the following bug:

* This update fixes a regression in the scsi_block_new_request() function,
which caused all read requests to through SG_IO if the host cache was not
used. (BZ#1141189)

All qemu-kvm users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. After installing this
update, shut down all running virtual machines. Once all virtual machines
have shut down, start them again for this update to take effect.

4. 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
https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1139115 – CVE-2014-3615 Qemu: information leakage when guest sets high resolution

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
qemu-kvm-1.5.3-60.el7_0.10.src.rpm

x86_64:
libcacard-1.5.3-60.el7_0.10.i686.rpm
libcacard-1.5.3-60.el7_0.10.x86_64.rpm
qemu-guest-agent-1.5.3-60.el7_0.10.x86_64.rpm
qemu-img-1.5.3-60.el7_0.10.x86_64.rpm
qemu-kvm-1.5.3-60.el7_0.10.x86_64.rpm
qemu-kvm-common-1.5.3-60.el7_0.10.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-60.el7_0.10.i686.rpm
qemu-kvm-debuginfo-1.5.3-60.el7_0.10.x86_64.rpm
qemu-kvm-tools-1.5.3-60.el7_0.10.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
libcacard-devel-1.5.3-60.el7_0.10.i686.rpm
libcacard-devel-1.5.3-60.el7_0.10.x86_64.rpm
libcacard-tools-1.5.3-60.el7_0.10.x86_64.rpm
qemu-guest-agent-1.5.3-60.el7_0.10.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-60.el7_0.10.i686.rpm
qemu-kvm-debuginfo-1.5.3-60.el7_0.10.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
qemu-kvm-1.5.3-60.el7_0.10.src.rpm

x86_64:
qemu-guest-agent-1.5.3-60.el7_0.10.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-60.el7_0.10.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64:
libcacard-1.5.3-60.el7_0.10.i686.rpm
libcacard-1.5.3-60.el7_0.10.x86_64.rpm
libcacard-devel-1.5.3-60.el7_0.10.i686.rpm
libcacard-devel-1.5.3-60.el7_0.10.x86_64.rpm
libcacard-tools-1.5.3-60.el7_0.10.x86_64.rpm
qemu-guest-agent-1.5.3-60.el7_0.10.x86_64.rpm
qemu-img-1.5.3-60.el7_0.10.x86_64.rpm
qemu-kvm-1.5.3-60.el7_0.10.x86_64.rpm
qemu-kvm-common-1.5.3-60.el7_0.10.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-60.el7_0.10.i686.rpm
qemu-kvm-debuginfo-1.5.3-60.el7_0.10.x86_64.rpm
qemu-kvm-tools-1.5.3-60.el7_0.10.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
qemu-kvm-1.5.3-60.el7_0.10.src.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

Red Hat Enterprise Linux Workstation (v. 7):

Source:
qemu-kvm-1.5.3-60.el7_0.10.src.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2014-3615.html
https://access.redhat.com/security/updates/classification/#low

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

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