CVE-2018-20191

high
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/vmw/pvrdma_main.c in QEMU does not implement a read operation (such as uar_read by analogy to uar_write), which allows attackers to cause a denial of service (NULL pointer dereference).

References

http://www.openwall.com/lists/oss-security/2018/12/18/1

http://www.securityfocus.com/bid/106276

https://lists.fedoraproject.org/archives/list/[email protected]/message/CGCFIFSIWUREEQQOZDZFBYKWZHXCWBZN/

https://lists.fedoraproject.org/archives/list/[email protected]/message/KJMTVGDLA654HNCDGLCUEIP36SNJEKK7/

https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg03066.html

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

Details

Source: MITRE

Published: 2018-12-20

Updated: 2020-05-12

Type: CWE-476

Risk Information

CVSS v2

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH

Tenable Plugins

View all (4 total)

IDNameProductFamilySeverity
128184EulerOS 2.0 SP8 : qemu-kvm (EulerOS-SA-2019-1815)NessusHuawei Local Security Checks
high
124467Fedora 30 : 2:qemu (2019-0664c7724d)NessusFedora Local Security Checks
high
123457Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : QEMU vulnerabilities (USN-3923-1)NessusUbuntu Local Security Checks
high
123101Fedora 29 : 2:qemu (2019-88a98ce795)NessusFedora Local Security Checks
high