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AUSCERT External Security Bulletin Redistribution
ESB-2014.2154
USN-2409-1: QEMU vulnerabilities
17 November 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: qemu
qemu-kvm
Publisher: Ubuntu
Operating System: Ubuntu
Linux variants
KVM
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Increased Privileges -- Existing Account
Access Privileged Data -- Existing Account
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-7815 CVE-2014-5388 CVE-2014-5263
CVE-2014-3689 CVE-2014-3640 CVE-2014-3615
Reference: ESB-2014.2062
ESB-2014.1886
ESB-2014.1772
ESB-2014.2083.2
Original Bulletin:
http://www.ubuntu.com/usn/usn-2409-1/
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running qemu or qemu-kvm check for an updated version of the
software for their operating system.
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USN-2409-1: QEMU vulnerabilities
Ubuntu Security Notice USN-2409-1
13th November, 2014
qemu, qemu-kvm vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
Ubuntu 14.10
Ubuntu 14.04 LTS
Ubuntu 12.04 LTS
Ubuntu 10.04 LTS
Summary
Several security issues were fixed in QEMU.
Software description
qemu - Machine emulator and virtualizer
qemu-kvm - Machine emulator and virtualizer
Details
Laszlo Ersek discovered that QEMU incorrectly handled memory in the vga
device. A malicious guest could possibly use this issue to read arbitrary
host memory. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10.
(CVE-2014-3615)
Xavier Mehrenberger and Stephane Duverger discovered that QEMU incorrectly
handled certain udp packets when using guest networking. A malicious guest
could possibly use this issue to cause a denial of service. (CVE-2014-3640)
It was discovered that QEMU incorrectly handled parameter validation in
the vmware_vga device. A malicious guest could possibly use this issue to
write into memory of the host, leading to privilege escalation.
(CVE-2014-3689)
It was discovered that QEMU incorrectly handled USB xHCI controller live
migration. An attacker could possibly use this issue to cause a denial of
service, or possibly execute arbitrary code. This issue only affected
Ubuntu 14.04 LTS. (CVE-2014-5263)
Michael S. Tsirkin discovered that QEMU incorrectly handled memory in the
ACPI PCI hotplug interface. A malicious guest could possibly use this issue
to access memory of the host, leading to information disclosure or
privilege escalation. This issue only affected Ubuntu 14.04 LTS.
(CVE-2014-5388)
James Spadaro discovered that QEMU incorrectly handled certain VNC
bytes_per_pixel values. An attacker having access to a VNC console could
possibly use this issue to cause a guest to crash, resulting in a denial of
service. (CVE-2014-7815)
Update instructions
The problem can be corrected by updating your system to the following package
version:
Ubuntu 14.10:
qemu-system-misc 2.1+dfsg-4ubuntu6.1
qemu-system 2.1+dfsg-4ubuntu6.1
qemu-system-aarch64 2.1+dfsg-4ubuntu6.1
qemu-system-x86 2.1+dfsg-4ubuntu6.1
qemu-system-sparc 2.1+dfsg-4ubuntu6.1
qemu-system-arm 2.1+dfsg-4ubuntu6.1
qemu-system-ppc 2.1+dfsg-4ubuntu6.1
qemu-system-mips 2.1+dfsg-4ubuntu6.1
Ubuntu 14.04 LTS:
qemu-system-misc 2.0.0+dfsg-2ubuntu1.7
qemu-system 2.0.0+dfsg-2ubuntu1.7
qemu-system-aarch64 2.0.0+dfsg-2ubuntu1.7
qemu-system-x86 2.0.0+dfsg-2ubuntu1.7
qemu-system-sparc 2.0.0+dfsg-2ubuntu1.7
qemu-system-arm 2.0.0+dfsg-2ubuntu1.7
qemu-system-ppc 2.0.0+dfsg-2ubuntu1.7
qemu-system-mips 2.0.0+dfsg-2ubuntu1.7
Ubuntu 12.04 LTS:
qemu-kvm 1.0+noroms-0ubuntu14.19
Ubuntu 10.04 LTS:
qemu-kvm 0.12.3+noroms-0ubuntu9.25
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.
References
CVE-2014-3615, CVE-2014-3640, CVE-2014-3689, CVE-2014-5263, CVE-2014-5388,
CVE-2014-7815
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