Issued:
2017-10-18
Updated:
2017-10-18

RHSA-2017:2911 - Important: wpa_supplicant security update

Synopsis

Important: wpa_supplicant security update

Type/Severity

Security Advisory Important

Topic

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.

Description

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

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

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

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.i686.rpm
  • wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.ppc64.rpm
  • wpa_supplicant-0.7.3-9.el6_9.2.x86_64.rpm
  • wpa_supplicant-0.7.3-9.el6_9.2.s390x.rpm
  • wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.x86_64.rpm
  • wpa_supplicant-0.7.3-9.el6_9.2.i686.rpm
  • wpa_supplicant-0.7.3-9.el6_9.2.ppc64.rpm
  • wpa_supplicant-debuginfo-0.7.3-9.el6_9.2.s390x.rpm
  • wpa_supplicant-0.7.3-9.el6_9.2.src.rpm

Fixes

CVEs

References

Additional information