CVE-2020-27821

medium

Description

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.

References

http://www.openwall.com/lists/oss-security/2020/12/16/6

https://bugzilla.redhat.com/show_bug.cgi?id=1902651

https://security.netapp.com/advisory/ntap-20210115-0006/

Details

Source: MITRE

Published: 2020-12-08

Updated: 2021-01-15

Type: CWE-787

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: 6

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

Impact Score: 4

Exploitability Score: 1.5

Severity: MEDIUM