Ubuntu 14.04 LTS / 16.04 LTS / 16.10 : qemu vulnerabilities (USN-3261-1)

Ubuntu Security Notice (C) 2017 Canonical, Inc. / NASL script (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related
patches.

Description :

Zhenhao Hong discovered that QEMU incorrectly handled the Virtio GPU
device. An attacker inside the guest could use this issue to cause
QEMU to crash, resulting in a denial of service. This issue only
affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-10028,
CVE-2016-10029)

Li Qiang discovered that QEMU incorrectly handled the 6300esb
watchdog. A privileged attacker inside the guest could use this issue
to cause QEMU to crash, resulting in a denial of service.
(CVE-2016-10155)

Li Qiang discovered that QEMU incorrectly handled the i.MX Fast
Ethernet Controller. A privileged attacker inside the guest could use
this issue to cause QEMU to crash, resulting in a denial of service.
This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10.
(CVE-2016-7907)

It was discovered that QEMU incorrectly handled the JAZZ RC4030
device. A privileged attacker inside the guest could use this issue to
cause QEMU to crash, resulting in a denial of service. (CVE-2016-8667)

It was discovered that QEMU incorrectly handled the 16550A UART
device. A privileged attacker inside the guest could use this issue to
cause QEMU to crash, resulting in a denial of service. (CVE-2016-8669)

It was discovered that QEMU incorrectly handled the shared rings when
used with Xen. A privileged attacker inside the guest could use this
issue to cause QEMU to crash, resulting in a denial of service, or
possibly execute arbitrary code on the host. (CVE-2016-9381)

Jann Horn discovered that QEMU incorrectly handled VirtFS directory
sharing. A privileged attacker inside the guest could use this issue
to access files on the host file system outside of the shared
directory and possibly escalate their privileges. In the default
installation, when QEMU is used with libvirt, attackers would be
isolated by the libvirt AppArmor profile. (CVE-2016-9602)

Gerd Hoffmann discovered that QEMU incorrectly handled the Cirrus VGA
device when being used with a VNC connection. A privileged attacker
inside the guest could use this issue to cause QEMU to crash,
resulting in a denial of service, or possibly execute arbitrary code
on the host. In the default installation, when QEMU is used with
libvirt, attackers would be isolated by the libvirt AppArmor profile.
(CVE-2016-9603)

It was discovered that QEMU incorrectly handled the ColdFire Fast
Ethernet Controller. A privileged attacker inside the guest could use
this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2016-9776)

Li Qiang discovered that QEMU incorrectly handled the Virtio GPU
device. An attacker inside the guest could use this issue to cause
QEMU to leak contents of host memory. This issue only affected Ubuntu
16.04 LTS and Ubuntu 16.10. (CVE-2016-9845, CVE-2016-9908)

Li Qiang discovered that QEMU incorrectly handled the Virtio GPU
device. An attacker inside the guest could use this issue to cause
QEMU to crash, resulting in a denial of service. This issue only
affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9846,
CVE-2016-9912, CVE-2017-5552, CVE-2017-5578, CVE-2017-5857)

Li Qiang discovered that QEMU incorrectly handled the USB redirector.
An attacker inside the guest could use this issue to cause QEMU to
crash, resulting in a denial of service. This issue only affected
Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9907)

Li Qiang discovered that QEMU incorrectly handled USB EHCI emulation.
An attacker inside the guest could use this issue to cause QEMU to
crash, resulting in a denial of service. (CVE-2016-9911)

Li Qiang discovered that QEMU incorrectly handled VirtFS directory
sharing. A privileged attacker inside the guest could use this issue
to cause QEMU to crash, resulting in a denial of service.
(CVE-2016-9913, CVE-2016-9914, CVE-2016-9915, CVE-2016-9916)

Qinghao Tang, Li Qiang, and Jiangxin discovered that QEMU incorrectly
handled the Cirrus VGA device. A privileged attacker inside the guest
could use this issue to cause QEMU to crash, resulting in a denial of
service. (CVE-2016-9921, CVE-2016-9922)

Wjjzhang and Li Qiang discovered that QEMU incorrectly handled the
Cirrus VGA device. A privileged attacker inside the guest could use
this issue to cause QEMU to crash, resulting in a denial of service,
or possibly execute arbitrary code on the host. In the default
installation, when QEMU is used with libvirt, attackers would be
isolated by the libvirt AppArmor profile. (CVE-2017-2615)

It was discovered that QEMU incorrectly handled the Cirrus VGA device.
A privileged attacker inside the guest could use this issue to cause
QEMU to crash, resulting in a denial of service, or possibly execute
arbitrary code on the host. In the default installation, when QEMU is
used with libvirt, attackers would be isolated by the libvirt AppArmor
profile. (CVE-2017-2620)

It was discovered that QEMU incorrectly handled VNC connections. An
attacker inside the guest could use this issue to cause QEMU to crash,
resulting in a denial of service. (CVE-2017-2633)

Li Qiang discovered that QEMU incorrectly handled the ac97 audio
device. A privileged attacker inside the guest could use this issue to
cause QEMU to crash, resulting in a denial of service. (CVE-2017-5525)

Li Qiang discovered that QEMU incorrectly handled the es1370 audio
device. A privileged attacker inside the guest could use this issue to
cause QEMU to crash, resulting in a denial of service. (CVE-2017-5526)

Li Qiang discovered that QEMU incorrectly handled the 16550A UART
device. A privileged attacker inside the guest could use this issue to
cause QEMU to crash, resulting in a denial of service. (CVE-2017-5579)

Jiang Xin discovered that QEMU incorrectly handled SDHCI device
emulation. A privileged attacker inside the guest could use this issue
to cause QEMU to crash, resulting in a denial of service, or possibly
execute arbitrary code on the host. In the default installation, when
QEMU is used with libvirt, attackers would be isolated by the libvirt
AppArmor profile. (CVE-2017-5667)

Li Qiang discovered that QEMU incorrectly handled the MegaRAID SAS
device. A privileged attacker inside the guest could use this issue to
cause QEMU to crash, resulting in a denial of service. (CVE-2017-5856)

Li Qiang discovered that QEMU incorrectly handled the CCID Card
device. A privileged attacker inside the guest could use this issue to
cause QEMU to crash, resulting in a denial of service. (CVE-2017-5898)

Li Qiang discovered that QEMU incorrectly handled USB xHCI controller
emulation. A privileged attacker inside the guest could use this issue
to cause QEMU to crash, resulting in a denial of service.
(CVE-2017-5973)

Jiang Xin and Wjjzhang discovered that QEMU incorrectly handled SDHCI
device emulation. A privileged attacker inside the guest could use
this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2017-5987)

Li Qiang discovered that QEMU incorrectly handled USB OHCI controller
emulation. A privileged attacker inside the guest could use this issue
to cause QEMU to hang, resulting in a denial of service.
(CVE-2017-6505).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.9
(CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.1
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false