FreeBSD : FreeBSD -- IPv6 Hop-by-Hop options use-after-free bug (74bbde13-ec17-11ea-88f8-901b0ef719ab)

medium Nessus Plugin ID 140235

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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

Due to improper mbuf handling in the kernel, a use-after-free bug might be triggered by sending IPv6 Hop-by-Hop options over the loopback interface. Impact : Triggering the use-after-free situation may result in unintended kernel behaviour including a kernel panic.

Solution

Update the affected package.

See Also

http://www.nessus.org/u?8a97d333

Plugin Details

Severity: Medium

ID: 140235

File Name: freebsd_pkg_74bbde13ec1711ea88f8901b0ef719ab.nasl

Version: 1.3

Type: local

Published: 9/4/2020

Updated: 4/6/2021

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2020-7462

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:FreeBSD, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 9/2/2020

Vulnerability Publication Date: 9/2/2020

Reference Information

CVE: CVE-2020-7462

FreeBSD: SA-20:24.ipv6