Out-of-bounds write in FreeBSD - CVE-2020-7459
Published: August 7, 2020
Vulnerability identifier: #VU34101
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-2020-7459
CWE-ID: CWE-787
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 missing length validation code common to multiple USB network drivers. A local user can use a malicious USB device to write beyond the end of an allocated network packet buffer, trigger buffer overflow and execute arbitrary code on the system with elevated privileges.
How to mitigate CVE-2020-7459
Install updates from vendor's website.