| Description: | Summary:
The remote host is missing an update for the Debian 'qemu' package(s) announced via the DLA-845-1 advisory.
Vulnerability Insight:
Several vulnerabilities were discovered in qemu, a fast processor emulator. The Common Vulnerabilities and Exposures project identifies the following problems:
CVE-2017-2615
The Cirrus CLGD 54xx VGA Emulator in qemu is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode.
A privileged user inside guest could use this flaw to crash the Qemu process resulting in DoS OR potentially execute arbitrary code on the host with privileges of Qemu process on the host.
CVE-2017-2620
The Cirrus CLGD 54xx VGA Emulator in qemu is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data in cirrus_bitblt_cputovideo.
A privileged user inside guest could use this flaw to crash the Qemu process resulting in DoS OR potentially execute arbitrary code on the host with privileges of Qemu process on the host.
CVE-2017-5898
The CCID Card device emulator support is vulnerable to an integer overflow flaw. It could occur while passing message via command/responses packets to and from the host.
A privileged user inside guest could use this flaw to crash the Qemu process on host resulting in DoS.
CVE-2017-5973
The USB xHCI controller emulator support in qemu is vulnerable to an infinite loop issue. It could occur while processing control transfer descriptors' sequence in xhci_kick_epctx.
A privileged user inside guest could use this flaw to crash the Qemu process resulting in DoS.
This update also updates the fix CVE-2016-9921 since it was too strict and broke certain guests.
For Debian 7 Wheezy, these problems have been fixed in version 1.1.2+dfsg-6+deb7u20.
We recommend that you upgrade your qemu packages.
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]
Affected Software/OS:
'qemu' package(s) on Debian 7.
Solution:
Please install the updated package(s).
CVSS Score:
9.0
CVSS Vector:
AV:N/AC:L/Au:S/C:C/I:C/A:C
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