Resource management error in FreeBSD - CVE-2020-7456
Published: June 10, 2020
Vulnerability identifier: #VU28929
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-7456
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: FreeBSD Foundation
Affected software:
FreeBSD
FreeBSD
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper management of internal resources. The the push/pop level is not restored within the processing of the same HID item, an invalid memory location may be used for subsequent HID item processing. An attacker with physical access to a USB port may be able to use a specially crafted USB device to gain kernel or user-space code execution.
How to mitigate CVE-2020-7456
Install updates from vendor's website.