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Category:   Application (Generic)  >   QEMU Vendors:   QEMU.org
(Ubuntu Issues Fix) QEMU Floppy Disk Controller Emulation Flaw Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1032321
SecurityTracker URL:  http://securitytracker.com/id/1032321
CVE Reference:   CVE-2015-3456   (Links to External Site)
Date:  May 13 2015
Impact:   User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.3.0 and prior versions
Description:   A vulnerability was reported in QEMU. A local user on the guest system can obtain elevated privileges on the target host system.

A local user on the guest system can supply specially crafted commands (e.g., FD_CMD_READ_ID, FD_CMD_DRIVE_SPECIFICATION_COMMAND) to trigger a memory corruption error and execute arbitrary code on the target host system with the privileges of the QEMU process on the host.

VMware, Microsoft Hyper-V, and Bochs hypervisors are not affected.

The original advisory is available at:

http://venom.crowdstrike.com/

Jason Geffner, CrowdStrike Senior Security Researcher, reported this vulnerability.

Impact:   A local user on the guest system can obtain elevated privileges on the target host system.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

http://www.ubuntu.com/usn/usn-2608-1

Vendor URL:  wiki.qemu.org/Main_Page (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  12.04 LTS, 14.04 LTS, 14.10, 15.04

Message History:   This archive entry is a follow-up to the message listed below.
May 13 2015 QEMU Floppy Disk Controller Emulation Flaw Lets Local Users Gain Elevated Privileges



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