CVEvulnerability

CVE-2019-5597

9.1 CRITICAL Published 2019-05-15 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2019-05-15
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
9.1 CRITICAL — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CVSS 2.0 ([email protected])
6.4 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:P
Weaknesses
CWE-20

Description

In FreeBSD 11.3-PRERELEASE and 12.0-STABLE before r347591, 11.2-RELEASE before 11.2-RELEASE-p10, and 12.0-RELEASE before 12.0-RELEASE-p4, a bug in the pf IPv6 fragment reassembly logic incorrectly uses the last extension header offset from the last received packet instead of the first packet allowing maliciously crafted IPv6 packets to cause a crash or potentially bypass the packet filter.

Affected configurations

• freebsd freebsd 11.2 • freebsd freebsd 12.0

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References