CVE-2018-20124

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

hw/rdma/rdma_backend.c in QEMU allows guest OS users to trigger out-of-bounds access via a PvrdmaSqWqe ring element with a large num_sge value.

References

http://www.openwall.com/lists/oss-security/2018/12/18/2

http://www.securityfocus.com/bid/106290

https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg02822.html

https://usn.ubuntu.com/3923-1/

Details

Source: MITRE

Published: 2018-12-20

Updated: 2020-05-12

Type: CWE-125

Risk Information

CVSS v2

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

Base Score: 5.5

Vector: CVSS:3.1/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

Tenable Plugins

View all (1 total)

IDNameProductFamilySeverity
123457Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : QEMU vulnerabilities (USN-3923-1)NessusUbuntu Local Security Checks
high