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FreeBSD: VID-C0C5AFEF-38DB-11E8-8B7F-A4BADB2F469B (CVE-2018-6918): FreeBSD -- ipsec crash or denial of service

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FreeBSD: VID-C0C5AFEF-38DB-11E8-8B7F-A4BADB2F469B (CVE-2018-6918): FreeBSD -- ipsec crash or denial of service

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
04/04/2018
Created
07/25/2018
Added
04/06/2018
Modified
05/07/2019

Description

In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p9, 10.4-STABLE, 10.4-RELEASE-p8 and 10.3-RELEASE-p28, the length field of the ipsec option header does not count the size of the option header itself, causing an infinite loop when the length is zero. This issue can allow a remote attacker who is able to send an arbitrary packet to cause the machine to crash.

Solution(s)

  • freebsd-upgrade-base-10_3-release-p29
  • freebsd-upgrade-base-10_4-release-p8
  • freebsd-upgrade-base-11_1-release-p9

References

  • CVE-2018-6918

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