CVE-2016-6351
First published: Wed Sep 07 2016(Updated: )
The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP/NCR53C9x controller emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the QEMU host via vectors involving DMA read into ESP command buffer.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU KVM | <=2.6.2 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Debian | =8.0 |
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Reference Links
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=926cde5f3e4d2504ed161ed0cb771ac7cad6fd11
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=cc96677469388bad3d66479379735cf75db069e3
- http://www.openwall.com/lists/oss-security/2016/07/25/14
- http://www.openwall.com/lists/oss-security/2016/07/26/7
- http://www.securityfocus.com/bid/92119
- http://www.ubuntu.com/usn/USN-3047-1
- http://www.ubuntu.com/usn/USN-3047-2
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
Frequently Asked Questions
What is the severity of CVE-2016-6351?
CVE-2016-6351 has a high severity rating due to its potential to cause denial of service and execute arbitrary code.
How do I fix CVE-2016-6351?
To fix CVE-2016-6351, you should upgrade to a version of QEMU that is newer than 2.6.2, where this vulnerability has been addressed.
Who is affected by CVE-2016-6351?
CVE-2016-6351 affects local guest OS administrators using QEMU versions up to 2.6.2 with ESP/NCR53C9x controller emulation.
What kind of attack can CVE-2016-6351 facilitate?
CVE-2016-6351 can facilitate a denial of service attack or allow execution of arbitrary code on the QEMU host system.
Which operating systems are vulnerable to CVE-2016-6351?
Vulnerable operating systems include Ubuntu Linux versions 12.04, 14.04, and 16.04, as well as Debian Linux version 8.0, running QEMU 2.6.2 or earlier.
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