CentOS 6 : wpa_supplicant (CESA-2017:2911) (KRACK)

Medium Nessus Plugin ID 103946

Synopsis

The remote CentOS host is missing a security update.

Description

An update for wpa_supplicant is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The wpa_supplicant packages contain an 802.1X Supplicant with support for WEP, WPA, WPA2 (IEEE 802.11i / RSN), and various EAP authentication methods. They implement key negotiation with a WPA Authenticator for client stations and controls the roaming and IEEE 802.11 authentication and association of the WLAN driver.

Security Fix(es) :

* A new exploitation technique called key reinstallation attacks (KRACK) affecting WPA2 has been discovered. A remote attacker within Wi-Fi range could exploit these attacks to decrypt Wi-Fi traffic or possibly inject forged Wi-Fi packets by manipulating cryptographic handshakes used by the WPA2 protocol. (CVE-2017-13077, CVE-2017-13078, CVE-2017-13080, CVE-2017-13087)

Red Hat would like to thank CERT for reporting these issues. Upstream acknowledges Mathy Vanhoef (University of Leuven) as the original reporter of these issues.

Solution

Update the affected wpa_supplicant package.

See Also

http://www.nessus.org/u?49b97324

Plugin Details

Severity: Medium

ID: 103946

File Name: centos_RHSA-2017-2911.nasl

Version: $Revision: 3.13 $

Type: local

Agent: unix

Published: 2017/10/19

Modified: 2018/01/29

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 5.4

Temporal Score: 5.1

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

Temporal Vector: CVSS2#E:F/RL:U/RC:ND

CVSSv3

Base Score: 6.8

Temporal Score: 6.6

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

Temporal Vector: CVSS:3.0/E:F/RL:U/RC:X

Vulnerability Information

CPE: p-cpe:/a:centos:centos:wpa_supplicant, cpe:/o:centos:centos:6

Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2017/10/18

Reference Information

CVE: CVE-2017-13077, CVE-2017-13078, CVE-2017-13080, CVE-2017-13087

RHSA: 2017:2911

IAVA: 2017-A-0310