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Alerts This Week
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Red Hat Enterprise Linux 6: RHSA-2017-2911-01 Important: Wi-Fi Issues

red hat
Calendar Grey October 18, 2017
Scroller Redhat
Red Hat's security update for wpa_supplicant tackles critical vulnerabilities, boosting Wi-Fi security for business users.
An update for wpa_supplicant is now available for Red Hat Enterprise Linux 6

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

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.

Topics%20covered

Topics Covered

security advisory remote exploit Red Hat Enterprise Linux important security impact wpa_supplicant Wi-Fi flaw

References

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 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/kracks

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: wpa_supplicant-0.7.3-9.el6_9.2.src.rpm
i386: wpa_supplicant-0.7.3-9.el6_9.2.i686.rpm wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.i686.rpm
x86_64: wpa_supplicant-0.7.3-9.el6_9.2.x86_64.rpm wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source: wpa_supplicant-0.7.3-9.el6_9.2.src.rpm
x86_64: wpa_supplicant-0.7.3-9.el6_9.2.x86_64.rpm wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: wpa_supplicant-0.7.3-9.el6_9.2.src.rpm
i386: wpa_supplicant-0.7.3-9.el6_9.2.i686.rpm wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.i686.rpm
ppc64: wpa_supplicant-0.7.3-9.el6_9.2.ppc64.rpm wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.ppc64.rpm
s390x: wpa_supplicant-0.7.3-9.el6_9.2.s390x.rpm wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.s390x.rpm
x86_64: wpa_supplicant-0.7.3-9.el6_9.2.x86_64.rpm wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: wpa_supplicant-0.7.3-9.el6_9.2.src.rpm
i386: wpa_supplicant-0.7.3-9.el6_9.2.i686.rpm wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.i686.rpm
x86_64: wpa_supplicant-0.7.3-9.el6_9.2.x86_64.rpm wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.x86_64.rpm


Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2017:2911-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:2911
Issue date: 2017-10-18

Topic

An update for wpa_supplicant is now available for Red Hat Enterprise Linux6.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory remote exploit Red Hat Enterprise Linux important security impact wpa_supplicant Wi-Fi flaw

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Bugs Fixed

1491692 - CVE-2017-13077 wpa_supplicant: Reinstallation of the pairwise key in the 4-way handshake

1491693 - CVE-2017-13078 wpa_supplicant: Reinstallation of the group key in the 4-way handshake

1491696 - CVE-2017-13080 wpa_supplicant: Reinstallation of the group key in the group key handshake

1500303 - CVE-2017-13087 wpa_supplicant: reinstallation of the group key (GTK) when processing a Wireless Network Management (WNM) Sleep Mode Response frame

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