CVE-2020-10565

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.

CVSS v3 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

V2 Legend

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

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://svnweb.freebsd.org/ports?view=revision&revision=525916	Vendor Advisory
https://svnweb.freebsd.org/ports?view=revision&revision=525916	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*

History

21 Nov 2024, 04:55

Type	Values Removed	Values Added
References	~~() https://svnweb.freebsd.org/ports?view=revision&revision=525916 - Vendor Advisory~~	() https://svnweb.freebsd.org/ports?view=revision&revision=525916 - Vendor Advisory

Information

Published : 2020-03-14 01:15

Updated : 2024-11-21 04:55

NVD link : CVE-2020-10565

Mitre link : CVE-2020-10565

CVE.ORG link : CVE-2020-10565

JSON object : View

Products Affected

freebsd

freebsd

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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7.8 /10