RHEL 7 : wpa_supplicant (RHSA-2017:2907) (KRACK)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


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 7.

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-2017-13082, CVE-2017-13086, CVE-2017-13087,
CVE-2017-13088)

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.

See also :

https://access.redhat.com/security/vulnerabilities/kracks
http://rhn.redhat.com/errata/RHSA-2017-2907.html
https://www.redhat.com/security/data/cve/CVE-2017-13077.html
https://www.redhat.com/security/data/cve/CVE-2017-13078.html
https://www.redhat.com/security/data/cve/CVE-2017-13080.html
https://www.redhat.com/security/data/cve/CVE-2017-13082.html
https://www.redhat.com/security/data/cve/CVE-2017-13086.html
https://www.redhat.com/security/data/cve/CVE-2017-13087.html
https://www.redhat.com/security/data/cve/CVE-2017-13088.html

Solution :

Update the affected wpa_supplicant and / or wpa_supplicant-debuginfo
packages.

Risk factor :

Medium / CVSS Base Score : 5.8
(CVSS2#AV:A/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.5
(CVSS2#E:F/RL:U/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 103916 ()

Bugtraq ID:

CVE ID: CVE-2017-13077
CVE-2017-13078
CVE-2017-13080
CVE-2017-13082
CVE-2017-13086
CVE-2017-13087
CVE-2017-13088

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