USN-3414-1: QEMU vulnerabilities

Releases

• Ubuntu 17.04
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• qemu - Machine emulator and virtualizer

Details

Leo Gaspard discovered that QEMU incorrectly handled VirtFS access control.
A guest attacker could use this issue to elevate privileges inside the
guest. (CVE-2017-7493)

Li Qiang discovered that QEMU incorrectly handled VMWare PVSCSI emulation.
A privileged attacker inside the guest could use this issue to cause QEMU
to consume resources or crash, resulting in a denial of service.
(CVE-2017-8112)

It was discovered that QEMU incorrectly handled MegaRAID SAS 8708EM2 Host
Bus Adapter emulation support. A privileged attacker inside the guest could
use this issue to cause QEMU to crash, resulting in a denial of service, or
possibly to obtain sensitive host memory. This issue only affected Ubuntu
16.04 LTS and Ubuntu 17.04. (CVE-2017-8380)

Li Qiang discovered that QEMU incorrectly handled the Virtio GPU device. An
attacker inside the guest could use this issue to cause QEMU to consume
resources and crash, resulting in a denial of service. This issue only
affected Ubuntu 17.04. (CVE-2017-9060)

Li Qiang discovered that QEMU incorrectly handled the e1000e device. A
privileged attacker inside the guest could use this issue to cause QEMU to
hang, resulting in a denial of service. This issue only affected Ubuntu
17.04. (CVE-2017-9310)

Li Qiang discovered that QEMU incorrectly handled USB OHCI emulation
support. An attacker inside the guest could use this issue to cause QEMU to
crash, resulting in a denial of service. (CVE-2017-9330)

Li Qiang discovered that QEMU incorrectly handled IDE AHCI emulation
support. A privileged attacker inside the guest could use this issue to
cause QEMU to consume resources and crash, resulting in a denial of
service. (CVE-2017-9373)

Li Qiang discovered that QEMU incorrectly handled USB EHCI emulation
support. A privileged attacker inside the guest could use this issue to
cause QEMU to consume resources and crash, resulting in a denial of
service. (CVE-2017-9374)

Li Qiang discovered that QEMU incorrectly handled USB xHCI emulation
support. A privileged attacker inside the guest could use this issue to
cause QEMU to hang, resulting in a denial of service. (CVE-2017-9375)

Zhangyanyu discovered that QEMU incorrectly handled MegaRAID SAS 8708EM2
Host Bus Adapter emulation support. A privileged attacker inside the guest
could use this issue to cause QEMU to crash, resulting in a denial of
service. (CVE-2017-9503)

It was discovered that the QEMU qemu-nbd server incorrectly handled
initialization. A remote attacker could use this issue to cause the server
to crash, resulting in a denial of service. (CVE-2017-9524)

It was discovered that the QEMU qemu-nbd server incorrectly handled
signals. A remote attacker could use this issue to cause the server to
crash, resulting in a denial of service. (CVE-2017-10664)

Li Qiang discovered that the QEMU USB redirector incorrectly handled
logging debug messages. An attacker inside the guest could use this issue
to cause QEMU to crash, resulting in a denial of service. (CVE-2017-10806)

Anthony Perard discovered that QEMU incorrectly handled Xen block-interface
responses. An attacker inside the guest could use this issue to cause QEMU
to leak contents of host memory. (CVE-2017-10911)

Reno Robert discovered that QEMU incorrectly handled certain DHCP options
strings. An attacker inside the guest could use this issue to cause QEMU
to crash, resulting in a denial of service. (CVE-2017-11434)

Ryan Salsamendi discovered that QEMU incorrectly handled empty CDROM device
drives. 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 17.04. (CVE-2017-12809)

Update instructions

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

Ubuntu 17.04

• qemu-system - 1:2.8+dfsg-3ubuntu2.4
• qemu-system-aarch64 - 1:2.8+dfsg-3ubuntu2.4
• qemu-system-arm - 1:2.8+dfsg-3ubuntu2.4
• qemu-system-mips - 1:2.8+dfsg-3ubuntu2.4
• qemu-system-misc - 1:2.8+dfsg-3ubuntu2.4
• qemu-system-ppc - 1:2.8+dfsg-3ubuntu2.4
• qemu-system-s390x - 1:2.8+dfsg-3ubuntu2.4
• qemu-system-sparc - 1:2.8+dfsg-3ubuntu2.4
• qemu-system-x86 - 1:2.8+dfsg-3ubuntu2.4

Ubuntu 16.04

• qemu-system - 1:2.5+dfsg-5ubuntu10.15
• qemu-system-aarch64 - 1:2.5+dfsg-5ubuntu10.15
• qemu-system-arm - 1:2.5+dfsg-5ubuntu10.15
• qemu-system-mips - 1:2.5+dfsg-5ubuntu10.15
• qemu-system-misc - 1:2.5+dfsg-5ubuntu10.15
• qemu-system-ppc - 1:2.5+dfsg-5ubuntu10.15
• qemu-system-s390x - 1:2.5+dfsg-5ubuntu10.15
• qemu-system-sparc - 1:2.5+dfsg-5ubuntu10.15
• qemu-system-x86 - 1:2.5+dfsg-5ubuntu10.15

Ubuntu 14.04

• qemu-system - 2.0.0+dfsg-2ubuntu1.35
• qemu-system-aarch64 - 2.0.0+dfsg-2ubuntu1.35
• qemu-system-arm - 2.0.0+dfsg-2ubuntu1.35
• qemu-system-mips - 2.0.0+dfsg-2ubuntu1.35
• qemu-system-misc - 2.0.0+dfsg-2ubuntu1.35
• qemu-system-ppc - 2.0.0+dfsg-2ubuntu1.35
• qemu-system-sparc - 2.0.0+dfsg-2ubuntu1.35
• qemu-system-x86 - 2.0.0+dfsg-2ubuntu1.35

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

References

• CVE-2017-10664
• CVE-2017-10806
• CVE-2017-10911
• CVE-2017-11434
• CVE-2017-12809
• CVE-2017-7493
• CVE-2017-8112
• CVE-2017-8380
• CVE-2017-9060
• CVE-2017-9310
• CVE-2017-9330
• CVE-2017-9373
• CVE-2017-9374
• CVE-2017-9375
• CVE-2017-9503
• CVE-2017-9524

Related notices

• USN-3468-2: linux-image-4.10.0-38-generic-lpae, linux-image-4.10.0-38-generic, linux-image-4.10.0-38-lowlatency, linux-hwe, linux-image-extra-4.10.0-38-generic
• USN-3468-3: linux-image-4.10.0-1008-gcp, linux-gcp, linux-image-extra-4.10.0-1008-gcp
• USN-3469-1: linux-image-4.4.0-98-powerpc64-emb, linux-image-4.4.0-1039-aws, linux-image-4.4.0-98-powerpc-e500mc, linux-kvm, linux-image-4.4.0-98-generic, linux-snapdragon, linux-image-4.4.0-1078-snapdragon, linux-image-extra-4.4.0-1033-gke, linux-gke, linux-image-4.4.0-1033-gke, linux-image-4.4.0-98-generic-lpae, linux-raspi2, linux, linux-image-4.4.0-98-powerpc64-smp, linux-image-4.4.0-1076-raspi2, linux-image-4.4.0-98-lowlatency, linux-image-extra-4.4.0-98-generic, linux-image-4.4.0-1009-kvm, linux-image-4.4.0-98-powerpc-smp, linux-aws
• USN-3469-2: linux-image-4.4.0-98-powerpc64-emb, linux-image-4.4.0-98-powerpc-e500mc, linux-image-4.4.0-98-powerpc64-smp, linux-image-4.4.0-98-lowlatency, linux-lts-xenial, linux-image-4.4.0-98-generic, linux-image-extra-4.4.0-98-generic, linux-image-4.4.0-98-powerpc-smp, linux-image-4.4.0-98-generic-lpae
• USN-3470-2: linux-image-3.13.0-135-generic-lpae, linux-image-3.13.0-135-generic, linux-image-generic-lts-trusty, linux-image-generic-lpae-lts-trusty, linux-lts-trusty
• USN-3470-1: linux-image-3.13.0-135-powerpc64-smp, linux-image-3.13.0-135-powerpc-e500mc, linux-image-3.13.0-135-generic-lpae, linux-image-3.13.0-135-generic, linux-image-extra-3.13.0-135-generic, linux-image-3.13.0-135-powerpc-e500, linux-image-3.13.0-135-lowlatency, linux-image-3.13.0-135-powerpc-smp, linux, linux-image-3.13.0-135-powerpc64-emb
• USN-3468-1: linux-image-4.10.0-38-generic-lpae, linux-image-4.10.0-38-generic, linux-image-4.10.0-38-lowlatency, linux-raspi2, linux-image-4.10.0-1020-raspi2, linux-image-generic-lpae, linux-image-generic, linux-image-lowlatency, linux, linux-image-raspi2