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====================================================================                   Red Hat Security Advisory

Synopsis:          Important: wpa_supplicant security update
Advisory ID:       RHSA-2017:2907-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2017:2907
Issue date:        2017-10-17
CVE Names:         CVE-2017-13077 CVE-2017-13078 CVE-2017-13080 
                   CVE-2017-13082 CVE-2017-13086 CVE-2017-13087 
                   CVE-2017-13088 
====================================================================
1. Summary:

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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64

3. 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-2017-13082, 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.

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

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
1491698 - CVE-2017-13082 wpa_supplicant: Accepting a retransmitted FT Reassociation Request and reinstalling the pairwise key while processing it
1500302 - CVE-2017-13086 wpa_supplicant: reinstallation of the Tunneled Direct-Link Setup (TDLS) PeerKey (TPK) key in the TDLS handshake
1500303 - CVE-2017-13087 wpa_supplicant: reinstallation of the group key (GTK) when processing a Wireless Network Management (WNM) Sleep Mode Response frame
1500304 - CVE-2017-13088 wpa_supplicant: reinstallation of the integrity group key (IGTK) when processing a Wireless Network Management (WNM) Sleep Mode Response frame

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
wpa_supplicant-2.6-5.el7_4.1.src.rpm

x86_64:
wpa_supplicant-2.6-5.el7_4.1.x86_64.rpm
wpa_supplicant-debuginfo-2.6-5.el7_4.1.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
wpa_supplicant-2.6-5.el7_4.1.src.rpm

x86_64:
wpa_supplicant-2.6-5.el7_4.1.x86_64.rpm
wpa_supplicant-debuginfo-2.6-5.el7_4.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
wpa_supplicant-2.6-5.el7_4.1.src.rpm

aarch64:
wpa_supplicant-2.6-5.el7_4.1.aarch64.rpm
wpa_supplicant-debuginfo-2.6-5.el7_4.1.aarch64.rpm

ppc64:
wpa_supplicant-2.6-5.el7_4.1.ppc64.rpm
wpa_supplicant-debuginfo-2.6-5.el7_4.1.ppc64.rpm

ppc64le:
wpa_supplicant-2.6-5.el7_4.1.ppc64le.rpm
wpa_supplicant-debuginfo-2.6-5.el7_4.1.ppc64le.rpm

s390x:
wpa_supplicant-2.6-5.el7_4.1.s390x.rpm
wpa_supplicant-debuginfo-2.6-5.el7_4.1.s390x.rpm

x86_64:
wpa_supplicant-2.6-5.el7_4.1.x86_64.rpm
wpa_supplicant-debuginfo-2.6-5.el7_4.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
wpa_supplicant-2.6-5.el7_4.1.src.rpm

x86_64:
wpa_supplicant-2.6-5.el7_4.1.x86_64.rpm
wpa_supplicant-debuginfo-2.6-5.el7_4.1.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. 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-2017-13082
https://access.redhat.com/security/cve/CVE-2017-13086
https://access.redhat.com/security/cve/CVE-2017-13087
https://access.redhat.com/security/cve/CVE-2017-13088
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/kracks

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2017 Red Hat, Inc.
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