what you don't know can hurt you

Ubuntu Security Notice USN-3826-1

Ubuntu Security Notice USN-3826-1
Posted Nov 26, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3826-1 - Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled NE2000 device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. It was discovered that QEMU incorrectly handled the Slirp networking back-end. 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. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-10839, CVE-2018-11806, CVE-2018-12617, CVE-2018-16847, CVE-2018-17958, CVE-2018-17962, CVE-2018-17963, CVE-2018-18849, CVE-2018-18954, CVE-2018-19364
MD5 | 8120b466efeaad94515a93eb4970a034

Ubuntu Security Notice USN-3826-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3826-1
November 26, 2018

qemu vulnerabilities
==========================================================================

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

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in QEMU.

Software Description:
- qemu: Machine emulator and virtualizer

Details:

Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled
NE2000 device emulation. An attacker inside the guest could use this issue
to cause QEMU to crash, resulting in a denial of service. (CVE-2018-10839)

It was discovered that QEMU incorrectly handled the Slirp networking
back-end. 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.
This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu
18.04 LTS. (CVE-2018-11806)

Fakhri Zulkifli discovered that the QEMU guest agent incorrectly handled
certain QMP commands. An attacker could possibly use this issue to crash
the QEMU guest agent, resulting in a denial of service. (CVE-2018-12617)

Li Qiang discovered that QEMU incorrectly handled NVM Express Controller
emulation. An 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. This
issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-16847)

Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled
RTL8139 device emulation. An attacker inside the guest could use this issue
to cause QEMU to crash, resulting in a denial of service. (CVE-2018-17958)

Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled
PCNET device emulation. An attacker inside the guest could use this issue
to cause QEMU to crash, resulting in a denial of service. (CVE-2018-17962)

Daniel Shapira discovered that QEMU incorrectly handled large packet sizes.
An attacker inside the guest could use this issue to cause QEMU to crash,
resulting in a denial of service. (CVE-2018-17963)

It was discovered that QEMU incorrectly handled LSI53C895A device
emulation. An attacker inside the guest could use this issue to cause QEMU
to crash, resulting in a denial of service. (CVE-2018-18849)

Moguofang discovered that QEMU incorrectly handled the IPowerNV LPC
controller. 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
18.04 LTS and Ubuntu 18.10. (CVE-2018-18954)

Zhibin Hu discovered that QEMU incorrectly handled the Plan 9 File System
support. An attacker inside the guest could use this issue to cause QEMU
to crash, resulting in a denial of service. (CVE-2018-19364)

Update instructions:

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

Ubuntu 18.10:
qemu-system 1:2.12+dfsg-3ubuntu8.1
qemu-system-arm 1:2.12+dfsg-3ubuntu8.1
qemu-system-mips 1:2.12+dfsg-3ubuntu8.1
qemu-system-misc 1:2.12+dfsg-3ubuntu8.1
qemu-system-ppc 1:2.12+dfsg-3ubuntu8.1
qemu-system-s390x 1:2.12+dfsg-3ubuntu8.1
qemu-system-sparc 1:2.12+dfsg-3ubuntu8.1
qemu-system-x86 1:2.12+dfsg-3ubuntu8.1

Ubuntu 18.04 LTS:
qemu-system 1:2.11+dfsg-1ubuntu7.8
qemu-system-arm 1:2.11+dfsg-1ubuntu7.8
qemu-system-mips 1:2.11+dfsg-1ubuntu7.8
qemu-system-misc 1:2.11+dfsg-1ubuntu7.8
qemu-system-ppc 1:2.11+dfsg-1ubuntu7.8
qemu-system-s390x 1:2.11+dfsg-1ubuntu7.8
qemu-system-sparc 1:2.11+dfsg-1ubuntu7.8
qemu-system-x86 1:2.11+dfsg-1ubuntu7.8

Ubuntu 16.04 LTS:
qemu-system 1:2.5+dfsg-5ubuntu10.33
qemu-system-aarch64 1:2.5+dfsg-5ubuntu10.33
qemu-system-arm 1:2.5+dfsg-5ubuntu10.33
qemu-system-mips 1:2.5+dfsg-5ubuntu10.33
qemu-system-misc 1:2.5+dfsg-5ubuntu10.33
qemu-system-ppc 1:2.5+dfsg-5ubuntu10.33
qemu-system-s390x 1:2.5+dfsg-5ubuntu10.33
qemu-system-sparc 1:2.5+dfsg-5ubuntu10.33
qemu-system-x86 1:2.5+dfsg-5ubuntu10.33

Ubuntu 14.04 LTS:
qemu-system 2.0.0+dfsg-2ubuntu1.44
qemu-system-aarch64 2.0.0+dfsg-2ubuntu1.44
qemu-system-arm 2.0.0+dfsg-2ubuntu1.44
qemu-system-mips 2.0.0+dfsg-2ubuntu1.44
qemu-system-misc 2.0.0+dfsg-2ubuntu1.44
qemu-system-ppc 2.0.0+dfsg-2ubuntu1.44
qemu-system-sparc 2.0.0+dfsg-2ubuntu1.44
qemu-system-x86 2.0.0+dfsg-2ubuntu1.44

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

References:
https://usn.ubuntu.com/usn/usn-3826-1
CVE-2018-10839, CVE-2018-11806, CVE-2018-12617, CVE-2018-16847,
CVE-2018-17958, CVE-2018-17962, CVE-2018-17963, CVE-2018-18849,
CVE-2018-18954, CVE-2018-19364

Package Information:
https://launchpad.net/ubuntu/+source/qemu/1:2.12+dfsg-3ubuntu8.1
https://launchpad.net/ubuntu/+source/qemu/1:2.11+dfsg-1ubuntu7.8
https://launchpad.net/ubuntu/+source/qemu/1:2.5+dfsg-5ubuntu10.33
https://launchpad.net/ubuntu/+source/qemu/2.0.0+dfsg-2ubuntu1.44

Login or Register to add favorites

File Archive:

September 2021

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Sep 1st
    14 Files
  • 2
    Sep 2nd
    19 Files
  • 3
    Sep 3rd
    9 Files
  • 4
    Sep 4th
    1 Files
  • 5
    Sep 5th
    2 Files
  • 6
    Sep 6th
    3 Files
  • 7
    Sep 7th
    12 Files
  • 8
    Sep 8th
    22 Files
  • 9
    Sep 9th
    17 Files
  • 10
    Sep 10th
    19 Files
  • 11
    Sep 11th
    3 Files
  • 12
    Sep 12th
    2 Files
  • 13
    Sep 13th
    15 Files
  • 14
    Sep 14th
    16 Files
  • 15
    Sep 15th
    15 Files
  • 16
    Sep 16th
    7 Files
  • 17
    Sep 17th
    13 Files
  • 18
    Sep 18th
    2 Files
  • 19
    Sep 19th
    2 Files
  • 20
    Sep 20th
    14 Files
  • 21
    Sep 21st
    0 Files
  • 22
    Sep 22nd
    0 Files
  • 23
    Sep 23rd
    0 Files
  • 24
    Sep 24th
    0 Files
  • 25
    Sep 25th
    0 Files
  • 26
    Sep 26th
    0 Files
  • 27
    Sep 27th
    0 Files
  • 28
    Sep 28th
    0 Files
  • 29
    Sep 29th
    0 Files
  • 30
    Sep 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close