#VU48744 Use-after-free in FreeBSD - CVE-2020-7469
Published: December 1, 2020
Vulnerability identifier: #VU48744
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-7469
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
FreeBSD
FreeBSD
Software vendor:
FreeBSD Foundation
FreeBSD Foundation
Description
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to a use-after-free error when processing ICMPv6 error message. A remote attacker can send a specially crafted ICMPv6 message, trigger a use-after-free error and read contents of freed kernel memory.
Remediation
Install updates from vendor's website.