CVE-2016-4454

Publication date 1 June 2016

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

The vmsvga_fifo_read_raw function in hw/display/vmware_vga.c in QEMU allows local guest OS administrators to obtain sensitive host memory information or cause a denial of service (QEMU process crash) by changing FIFO registers and issuing a VGA command, which triggers an out-of-bounds read.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qemu	16.04 LTS xenial	Fixed 1:2.5+dfsg-5ubuntu10.3
	15.10 wily	Ignored end of life
	14.04 LTS trusty	Fixed 2.0.0+dfsg-2ubuntu1.26
	12.04 LTS precise	Not in release
qemu-kvm	16.04 LTS xenial	Not in release
	15.10 wily	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Fixed 1.0+noroms-0ubuntu14.29

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
qemu	Upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=521360267876d3b6518b328051a2e56bca55bef8 Upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=c2e3c54d3960bc53bfa3a5ce7ea7a050b9be267e Upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=7e486f7577764a07aa35588e119903c80a5c30a2

Severity score breakdown

Parameter	Value
Base score	6.0 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	High
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3047-1
QEMU vulnerabilities
4 August 2016