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FreeBSD: VID-A207BBD8-6572-11E9-8E67-206A8A720317: FreeBSD -- EAP-pwd message reassembly issue with unexpected fragment

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FreeBSD: VID-A207BBD8-6572-11E9-8E67-206A8A720317: FreeBSD -- EAP-pwd message reassembly issue with unexpected fragment

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
04/18/2019
Created
04/25/2019
Added
04/23/2019
Modified
04/23/2019

Description

Problem Description:

EAP-pwd implementation in hostapd (EAP server) and wpa_supplicant

(EAP peer) does not to validate fragmentation reassembly state

properly for a case where an unexpected fragment could be received.

This could result in process termination due to NULL pointer

dereference.

See

https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt

for a detailed description of the bug.

Impact:

All wpa_supplicant and hostapd versions with EAP-pwd support could

suffer a denial of service attack through process termination.

Solution(s)

  • freebsd-upgrade-base-11_2-release-p9
  • freebsd-upgrade-base-12_0-release-p3
  • freebsd-upgrade-package-hostapd
  • freebsd-upgrade-package-wpa_supplicant

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