FreeBSD : FreeBSD -- Unauthenticated EAPOL-Key Decryption Vulnerability (45671c0e-a652-11e8-805b-a4badb2f4699)

Low Nessus Plugin ID 112071

Synopsis

The remote FreeBSD host is missing one or more security-related
updates.

Description

When using WPA2, EAPOL-Key frames with the Encrypted flag and without
the MIC flag set, the data field was decrypted first without verifying
the MIC. When the dta field was encrypted using RC4, for example, when
negotiating TKIP as a pairwise cipher, the unauthenticated but
decrypted data was subsequently processed. This opened
wpa_supplicant(8) to abuse by decryption and recovery of sensitive
information contained in EAPOL-Key messages.

See
https://w1.fi/security/2018-1/unauthenticated-eapol-key-decryption.txt
for a detailed description of the bug. Impact : All users of the WPA2
TKIP pairwise cipher are vulnerable to information, for example, the
group key.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?a9d4ec50

Plugin Details

Severity: Low

ID: 112071

File Name: freebsd_pkg_45671c0ea65211e8805ba4badb2f4699.nasl

Version: 1.3

Type: local

Published: 2018/08/23

Modified: 2018/11/10

Dependencies: 12634

Risk Information

Risk Factor: Low

CVSS v2.0

Base Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:P

CVSS v3.0

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:FreeBSD, cpe:/o:freebsd:freebsd

Patch Publication Date: 2018/08/22

Vulnerability Publication Date: 2018/08/14

Reference Information

CVE: CVE-2018-1452

FreeBSD: SA-18:11.hostapd