CVE-2018-7858

LOW

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.

References

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/

Details

Source: MITRE

Published: 2018-03-12

Modified: 2018-07-12

Type: CWE-125

Risk Information

CVSS v2.0

Base Score: 2.1

Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:P)

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3.0

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM