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

Low Nessus Plugin ID 112071


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


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 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.


Update the affected packages.

See Also

Plugin Details

Severity: Low

ID: 112071

File Name: freebsd_pkg_45671c0ea65211e8805ba4badb2f4699.nasl

Version: 1.3

Type: local

Published: 2018/08/23

Updated: 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