CVE-2020-10565

CVSS V2 High 7.2 CVSS V3 High 7.8

Description

grub2-bhyve, as used in FreeBSD bhyve before revision 525916 2020-02-12, does not validate the address provided as part of a memrw command (read_* or write_*) by a guest through a grub2.cfg file. This allows an untrusted guest to perform arbitrary read or write operations in the context of the grub-bhyve process, resulting in code execution as root on the host OS.

Overview

CVE ID
CVE-2020-10565

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2020-03-14T01:15:12

Last Modified Date
2021-07-21T11:39:23

Weakness Enumerations

CWE	URL
CWE-119	http://cwe.mitre.org/data/definitions/119.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:o:freebsd:freebsd::::::::	1	OR		525916_2020-02-12

CVSS Version 2

Version
2.0

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

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
7.2

Severity
HIGH

Exploitability Score
3.9

Impact Score
10

CVSS Version 3

Version
3.1

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

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7.8

Base Severity
HIGH

Exploitability Score
1.8

Impact Score
5.9

References

Reference URL	Reference Tags
https://svnweb.freebsd.org/ports?view=revision&revision=525916	Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-10565
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10565

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:01:09				Added to TrackCVE
2022-12-04 12:50:54	2020-03-14T01:15Z	2020-03-14T01:15:12	CVE Published Date	updated
2022-12-04 12:50:54		2021-07-21T11:39:23	CVE Modified Date	updated
2022-12-04 12:50:54		Analyzed	Vulnerability Status	updated