Ranjivost programskog paketa qemu-kvm

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Red Hat Security Advisory

Synopsis: Important: qemu-kvm security update
Advisory ID: RHSA-2015:1924-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1924.html
Issue date: 2015-10-22
CVE Names: CVE-2015-5279
=====================================================================

1. Summary:

Updated qemu-kvm packages that fix one security issue are now available for
Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Important 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 Desktop (v. 6) – i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) – x86_64
Red Hat Enterprise Linux Server (v. 6) – i386, ppc64, x86_64
Red Hat Enterprise Linux Workstation (v. 6) – i386, 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.

A heap buffer overflow flaw was found in the way QEMU’s NE2000 NIC
emulation implementation handled certain packets received over the network.
A privileged user inside a guest could use this flaw to crash the QEMU
instance (denial of service) or potentially execute arbitrary code on
the host. (CVE-2015-5279)

Red Hat would like to thank Qinghao Tang of QIHU 360 Inc. for reporting
this issue.

All qemu-kvm users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. 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.

For details on how to apply this update, refer to:

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

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

1256672 – CVE-2015-5279 qemu: Heap overflow vulnerability in ne2000_receive() function

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
qemu-kvm-0.12.1.2-2.479.el6_7.2.src.rpm

i386:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.i686.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.i686.rpm

x86_64:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-img-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.479.el6_7.2.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
qemu-kvm-0.12.1.2-2.479.el6_7.2.src.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
qemu-kvm-0.12.1.2-2.479.el6_7.2.src.rpm

i386:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.i686.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.i686.rpm

ppc64:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.ppc64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.ppc64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
qemu-kvm-0.12.1.2-2.479.el6_7.2.src.rpm

i386:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.i686.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.i686.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://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2015-5279
https://access.redhat.com/security/updates/classification/#important

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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