CVE-2018-7858

Public on 2018-03-12

Modified on 2018-06-11

Description

Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.

Severity

Medium

See what this means

CVSS v3 Base Score

5.5

See breakdown

Affected Packages

Platform	Package	Release Date	Advisory
Amazon Linux 1	qemu-kvm	2018-06-08 18:29	ALAS-2018-1034
Amazon Linux 2 - Core	qemu-kvm	2018-06-07 23:41	ALAS2-2018-1034

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv2	4.9	AV:A/AC:M/Au:S/C:P/I:P/A:P
Amazon Linux	CVSSv3	5.5	CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
NVD	CVSSv2	2.1	AV:L/AC:L/Au:N/C:N/I:N/A:P
NVD	CVSSv3	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Red Hat: CVE-2018-7858 Mitre: CVE-2018-7858 FAQs regarding Amazon Linux ALAS/CVE Severity