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FreeBSD : FreeBSD -- IPv6 fragment reassembly panic in pf(4) (3d02520d-b309-11e9-a87f-a4badb2f4699)

critical Nessus Plugin ID 127543

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

A bug in the pf(4) IPv6 fragment reassembly logic incorrectly uses the last extension header offset from the last received packet instead of from the first packet. Impact : Malicious IPv6 packets with different IPv6 extensions could cause a kernel panic or potentially a filtering rule bypass.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?2da42fa0

Plugin Details

Severity: Critical

ID: 127543

File Name: freebsd_pkg_3d02520db30911e9a87fa4badb2f4699.nasl

Version: 1.3

Type: local

Published: 8/12/2019

Updated: 5/7/2024

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:P

CVSS Score Source: CVE-2019-5597

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

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

Temporal Vector: CVSS:3.0/E:P/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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/30/2019

Vulnerability Publication Date: 5/14/2019

Reference Information

CVE: CVE-2019-5597

FreeBSD: SA-19:05.pf