[IT-SecNots] [SECURITY] [DSA 3999-1] wpa security update

[Yves-Alexis Perez <corsac AT debian.org>]

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Debian Security Advisory DSA-3999-1                   security AT debian.org
https://www.debian.org/security/                        Yves-Alexis Perez
October 16, 2017                      https://www.debian.org/security/faq
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Package        : wpa
CVE ID         : CVE-2017-13077 CVE-2017-13078 CVE-2017-13079 CVE-2017-13080 
                 CVE-2017-13081 CVE-2017-13082 CVE-2017-13086 CVE-2017-13087 
                 CVE-2017-13088

Mathy Vanhoef of the imec-DistriNet research group of KU Leuven discovered
multiple vulnerabilities in the WPA protocol, used for authentication in
wireless networks. Those vulnerabilities applies to both the access point
(implemented in hostapd) and the station (implemented in wpa_supplicant).

An attacker exploiting the vulnerabilities could force the vulnerable system 
to
reuse cryptographic session keys, enabling a range of cryptographic attacks
against the ciphers used in WPA1 and WPA2. 

More information can be found in the researchers's paper, Key Reinstallation
Attacks: Forcing Nonce Reuse in WPA2.

CVE-2017-13077: reinstallation of the pairwise key in the Four-way handshake
CVE-2017-13078: reinstallation of the group key in the Four-way handshake
CVE-2017-13079: reinstallation of the integrity group key in the Four-way
                handshake
CVE-2017-13080: reinstallation of the group key in the Group Key handshake
CVE-2017-13081: reinstallation of the integrity group key in the Group Key
                handshake
CVE-2017-13082: accepting a retransmitted Fast BSS Transition Reassociation
                Request and reinstalling the pairwise key while processing it
CVE-2017-13086: reinstallation of the Tunneled Direct-Link Setup (TDLS) 
PeerKey
                (TPK) key in the TDLS handshake
CVE-2017-13087: reinstallation of the group key (GTK) when processing a
                Wireless Network Management (WNM) Sleep Mode Response frame
CVE-2017-13088: reinstallation of the integrity group key (IGTK) when
                processing a Wireless Network Management (WNM) Sleep Mode
                Response frame

For the oldstable distribution (jessie), these problems have been fixed
in version 2.3-1+deb8u5.

For the stable distribution (stretch), these problems have been fixed in
version 2:2.4-1+deb9u1.

For the testing distribution (buster), these problems have been fixed
in version 2:2.4-1.1.

For the unstable distribution (sid), these problems have been fixed in
version 2:2.4-1.1.

We recommend that you upgrade your wpa packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce AT lists.debian.org
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