CVE-2020-7456 Information

Description

In FreeBSD 12.1-STABLE before r361918 12.1-RELEASE before p6 11.4-STABLE before r361919 11.3-RELEASE before p10 and 11.4-RC2 before p1 an invalid memory location may be used for HID items if the push/pop level is not restored within the processing of that HID item allowing an attacker with physical access to a USB port to be able to use a specially crafted USB device to gain kernel or user-space code execution.

CVSS Vector

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

Reference

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:17.usb.asc https://security.netapp.com/advisory/ntap-20200625-0005/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

6.8