| Description: | Summary:
The remote host is missing an update for the Debian 'qemu' package(s) announced via the DSA-3348-1 advisory.
Vulnerability Insight:
Several vulnerabilities were discovered in qemu, a fast processor emulator.
CVE-2015-3214
Matt Tait of Google's Project Zero security team discovered a flaw in the QEMU i8254 PIT emulation. A privileged guest user in a guest with QEMU PIT emulation enabled could potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process.
CVE-2015-5154
Kevin Wolf of Red Hat discovered a heap buffer overflow flaw in the IDE subsystem in QEMU while processing certain ATAPI commands. A privileged guest user in a guest with the CDROM drive enabled could potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process.
CVE-2015-5165
Donghai Zhu discovered that the QEMU model of the RTL8139 network card did not sufficiently validate inputs in the C+ mode offload emulation, allowing a malicious guest to read uninitialized memory from the QEMU process's heap.
CVE-2015-5225
Mr Qinghao Tang from QIHU 360 Inc. and Mr Zuozhi from Alibaba Inc discovered a buffer overflow flaw in the VNC display driver leading to heap memory corruption. A privileged guest user could use this flaw to mount a denial of service (QEMU process crash), or potentially to execute arbitrary code on the host with the privileges of the hosting QEMU process.
CVE-2015-5745
A buffer overflow vulnerability was discovered in the way QEMU handles the virtio-serial device. A malicious guest could use this flaw to mount a denial of service (QEMU process crash).
For the oldstable distribution (wheezy), these problems have been fixed in version 1.1.2+dfsg-6a+deb7u9. The oldstable distribution is only affected by CVE-2015-5165 and CVE-2015-5745.
For the stable distribution (jessie), these problems have been fixed in version 1:2.1+dfsg-12+deb8u2.
For the unstable distribution (sid), these problems have been fixed in version 1:2.4+dfsg-1a.
We recommend that you upgrade your qemu packages.
Affected Software/OS:
'qemu' package(s) on Debian 8.
Solution:
Please install the updated package(s).
CVSS Score:
9.3
CVSS Vector:
AV:N/AC:M/Au:N/C:C/I:C/A:C
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