CVE-2018-7858 Information

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html http://www.openwall.com/lists/oss-security/2018/03/09/1 http://www.securityfocus.com/bid/103350 https://access.redhat.com/errata/RHSA-2018:1369 https://access.redhat.com/errata/RHSA-2018:1416 https://access.redhat.com/errata/RHSA-2018:2162 https://bugzilla.redhat.com/show_bug.cgi?id=1553402 https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html https://usn.ubuntu.com/3649-1/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5