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FreeBSD: VID-59C5F255-B309-11E9-A87F-A4BADB2F4699 (CVE-2019-5598): FreeBSD -- ICMP/ICMP6 packet filter bypass in pf

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FreeBSD: VID-59C5F255-B309-11E9-A87F-A4BADB2F4699 (CVE-2019-5598): FreeBSD -- ICMP/ICMP6 packet filter bypass in pf

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
05/14/2019
Created
07/31/2019
Added
07/31/2019
Modified
07/31/2019

Description

In FreeBSD 11.3-PRERELEASE before r345378, 12.0-STABLE before r345377, 11.2-RELEASE before 11.2-RELEASE-p10, and 12.0-RELEASE before 12.0-RELEASE-p4, a bug in pf does not check if the outer ICMP or ICMP6 packet has the same destination IP as the source IP of the inner protocol packet allowing a maliciously crafted ICMP/ICMP6 packet could bypass the packet filter rules and be passed to a host that would otherwise be unavailable.

Solution(s)

  • freebsd-upgrade-base-11_2-release-p10
  • freebsd-upgrade-base-12_0-release-p4

References

  • CVE-2019-5598

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