PT-2019-17777 · Freebsd · Freebsd

Published 2019-08-06 · Updated 2023-01-31 · CVE-2019-5608

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions FreeBSD versions 11.2-RELEASE before 11.2-RELEASE-p13 FreeBSD versions 11.3-RELEASE before 11.3-RELEASE-p2 FreeBSD versions 12.0-RELEASE before 12.0-RELEASE-p9

Description The issue arises from the incorrect handling of MLDv2 listener query packets that are internally fragmented across multiple mbufs in the ICMPv6 input path. This can be exploited by a remote attacker to cause an out-of-bounds read or write, potentially leading to a kernel panic due to an attempt to access an unmapped page.

Recommendations For FreeBSD versions 11.2-RELEASE before 11.2-RELEASE-p13, update to 11.2-RELEASE-p13 or later. For FreeBSD versions 11.3-RELEASE before 11.3-RELEASE-p2, update to 11.3-RELEASE-p2 or later. For FreeBSD versions 12.0-RELEASE before 12.0-RELEASE-p9, update to 12.0-RELEASE-p9 or later.

Fix

Memory Corruption

Out of bounds Read

Weakness Enumeration

CWE-787

CWE-125

Related Identifiers

CVE-2019-5608

FREEBSD-SA-19_19

Affected Products

Freebsd

References · 4

• https://osv.dev/vulnerability/CVE-2019-5608 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-5608 · Security Note
• https://security.freebsd.org/advisories/FreeBSD-SA-19:19.mldv2.asc · Vendor Advisory
• https://security.netapp.com/advisory/ntap-20190910-0002 · Note