RHEL 6 : wpa_supplicant (RHSA-2017:2911) (KRACK)

Medium Nessus Plugin ID 103958

Synopsis

The remote Red Hat host is missing one or more security updates.

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 and / or wpa_supplicant-debuginfo packages.

See Also

https://access.redhat.com/security/vulnerabilities/kracks

https://access.redhat.com/errata/RHSA-2017:2911

https://access.redhat.com/security/cve/cve-2017-13077

https://access.redhat.com/security/cve/cve-2017-13078

https://access.redhat.com/security/cve/cve-2017-13080

https://access.redhat.com/security/cve/cve-2017-13087

Plugin Details

Severity: Medium

ID: 103958

File Name: redhat-RHSA-2017-2911.nasl

Version: 3.15

Type: local

Agent: unix

Published: 2017/10/19

Updated: 2018/11/10

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5.4

Temporal Score: 4

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 6.8

Temporal Score: 5.9

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:wpa_supplicant, p-cpe:/a:redhat:enterprise_linux:wpa_supplicant-debuginfo, cpe:/o:redhat:enterprise_linux:6

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

Exploit Available: false

Exploit Ease: No known 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