Home / mailings

PDF

[USN-2828-1] QEMU vulnerabilities

Posted on 03 December 2015
Ubuntu Security

==========================
==========================
========================
Ubuntu Security Notice USN-2828-1
December 03, 2015

qemu, qemu-kvm vulnerabilities
==========================
==========================
========================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 15.10
- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in QEMU.

Software Description:
- qemu: Machine emulator and virtualizer
- qemu-kvm: Machine emulator and virtualizer

Details:

Jason Wang discovered that QEMU incorrectly handled the virtio-net device=
=2E
A remote attacker could use this issue to cause guest network consumption=
,
resulting in a denial of service. (CVE-2015-7295)

Qinghao Tang and Ling Liu discovered that QEMU incorrectly handled the
pcnet driver when used in loopback mode. A malicious guest could use this=

issue to cause a denial of service, or possibly execute arbitrary code on=

the host as the user running the QEMU process. In the default installatio=
n,
when QEMU is used with libvirt, attackers would be isolated by the libvir=
t
AppArmor profile. (CVE-2015-7504)

Ling Liu and Jason Wang discovered that QEMU incorrectly handled the
pcnet driver. A remote attacker could use this issue to cause a denial of=

service, or possibly execute arbitrary code on the host as the user runni=
ng
the QEMU process. In the default installation, when QEMU is used with
libvirt, attackers would be isolated by the libvirt AppArmor profile.
(CVE-2015-7512)

Qinghao Tang discovered that QEMU incorrectly handled the eepro100 driver=
=2E
A malicious guest could use this issue to cause an infinite loop, leading=

to a denial of service. (CVE-2015-8345)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 15.10:
qemu-system 1:2.3+dfsg-5ubuntu9.1
qemu-system-aarch64 1:2.3+dfsg-5ubuntu9.1
qemu-system-arm 1:2.3+dfsg-5ubuntu9.1
qemu-system-mips 1:2.3+dfsg-5ubuntu9.1
qemu-system-misc 1:2.3+dfsg-5ubuntu9.1
qemu-system-ppc 1:2.3+dfsg-5ubuntu9.1
qemu-system-sparc 1:2.3+dfsg-5ubuntu9.1
qemu-system-x86 1:2.3+dfsg-5ubuntu9.1

Ubuntu 15.04:
qemu-system 1:2.2+dfsg-5expubuntu9.7
qemu-system-aarch64 1:2.2+dfsg-5expubuntu9.7
qemu-system-arm 1:2.2+dfsg-5expubuntu9.7
qemu-system-mips 1:2.2+dfsg-5expubuntu9.7
qemu-system-misc 1:2.2+dfsg-5expubuntu9.7
qemu-system-ppc 1:2.2+dfsg-5expubuntu9.7
qemu-system-sparc 1:2.2+dfsg-5expubuntu9.7
qemu-system-x86 1:2.2+dfsg-5expubuntu9.7

Ubuntu 14.04 LTS:
qemu-system 2.0.0+dfsg-2ubuntu1.21
qemu-system-aarch64 2.0.0+dfsg-2ubuntu1.21
qemu-system-arm 2.0.0+dfsg-2ubuntu1.21
qemu-system-mips 2.0.0+dfsg-2ubuntu1.21
qemu-system-misc 2.0.0+dfsg-2ubuntu1.21
qemu-system-ppc 2.0.0+dfsg-2ubuntu1.21
qemu-system-sparc 2.0.0+dfsg-2ubuntu1.21
qemu-system-x86 2.0.0+dfsg-2ubuntu1.21

Ubuntu 12.04 LTS:
qemu-kvm 1.0+noroms-0ubuntu14.26

After a standard system update you need to restart all QEMU virtual
machines to make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2828-1
CVE-2015-7295, CVE-2015-7504, CVE-2015-7512, CVE-2015-8345

Package Information:
https://launchpad.net/ubuntu/+source/qemu/1:2.3+dfsg-5ubuntu9.1
https://launchpad.net/ubuntu/+source/qemu/1:2.2+dfsg-5expubuntu9.7
https://launchpad.net/ubuntu/+source/qemu/2.0.0+dfsg-2ubuntu1.21
https://launchpad.net/ubuntu/+source/qemu-kvm/1.0+noroms-0ubuntu14.26

 

TOP