[USN-3649-1] QEMU vulnerabilities
Marc Deslauriers
marc.deslauriers at canonical.com
Wed May 16 15:30:58 UTC 2018
==========================================================================
Ubuntu Security Notice USN-3649-1
May 16, 2018
qemu vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in QEMU.
Software Description:
- qemu: Machine emulator and virtualizer
Details:
Cyrille Chatras discovered that QEMU incorrectly handled certain PS2 values
during migration. An attacker could possibly use this issue to cause QEMU
to crash, resulting in a denial of service, or possibly execute arbitrary
code. This issue only affected Ubuntu 18.04 LTS. (CVE-2017-16845)
Cyrille Chatras discovered that QEMU incorrectly handled multiboot. An
attacker 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-2018-7550)
Ross Lagerwall 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. This issue only
affected Ubuntu 17.10 and Ubuntu 18.04 LTS. (CVE-2018-7858)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
qemu-system 1:2.11+dfsg-1ubuntu7.1
qemu-system-arm 1:2.11+dfsg-1ubuntu7.1
qemu-system-mips 1:2.11+dfsg-1ubuntu7.1
qemu-system-ppc 1:2.11+dfsg-1ubuntu7.1
qemu-system-s390x 1:2.11+dfsg-1ubuntu7.1
qemu-system-sparc 1:2.11+dfsg-1ubuntu7.1
qemu-system-x86 1:2.11+dfsg-1ubuntu7.1
Ubuntu 17.10:
qemu-system 1:2.10+dfsg-0ubuntu3.6
qemu-system-aarch64 1:2.10+dfsg-0ubuntu3.6
qemu-system-arm 1:2.10+dfsg-0ubuntu3.6
qemu-system-mips 1:2.10+dfsg-0ubuntu3.6
qemu-system-ppc 1:2.10+dfsg-0ubuntu3.6
qemu-system-s390x 1:2.10+dfsg-0ubuntu3.6
qemu-system-sparc 1:2.10+dfsg-0ubuntu3.6
qemu-system-x86 1:2.10+dfsg-0ubuntu3.6
Ubuntu 16.04 LTS:
qemu-system 1:2.5+dfsg-5ubuntu10.28
qemu-system-aarch64 1:2.5+dfsg-5ubuntu10.28
qemu-system-arm 1:2.5+dfsg-5ubuntu10.28
qemu-system-mips 1:2.5+dfsg-5ubuntu10.28
qemu-system-ppc 1:2.5+dfsg-5ubuntu10.28
qemu-system-s390x 1:2.5+dfsg-5ubuntu10.28
qemu-system-sparc 1:2.5+dfsg-5ubuntu10.28
qemu-system-x86 1:2.5+dfsg-5ubuntu10.28
Ubuntu 14.04 LTS:
qemu-system 2.0.0+dfsg-2ubuntu1.41
qemu-system-aarch64 2.0.0+dfsg-2ubuntu1.41
qemu-system-arm 2.0.0+dfsg-2ubuntu1.41
qemu-system-mips 2.0.0+dfsg-2ubuntu1.41
qemu-system-ppc 2.0.0+dfsg-2ubuntu1.41
qemu-system-sparc 2.0.0+dfsg-2ubuntu1.41
qemu-system-x86 2.0.0+dfsg-2ubuntu1.41
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-3649-1
CVE-2017-16845, CVE-2018-7550, CVE-2018-7858
Package Information:
https://launchpad.net/ubuntu/+source/qemu/1:2.11+dfsg-1ubuntu7.1
https://launchpad.net/ubuntu/+source/qemu/1:2.10+dfsg-0ubuntu3.6
https://launchpad.net/ubuntu/+source/qemu/1:2.5+dfsg-5ubuntu10.28
https://launchpad.net/ubuntu/+source/qemu/2.0.0+dfsg-2ubuntu1.41
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20180516/8dd1d3ca/attachment.sig>
More information about the ubuntu-security-announce
mailing list