Debian Security Advisory
DSA-3999-1 wpa -- security update
- Date Reported:
- 16 Oct 2017
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: 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.
- More information:
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 apply 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.
reinstallation of the pairwise key in the Four-way handshake
reinstallation of the group key in the Four-way handshake
reinstallation of the integrity group key in the Four-way handshake
reinstallation of the group key in the Group Key handshake
reinstallation of the integrity group key in the Group Key handshake
accepting a retransmitted Fast BSS Transition Reassociation Request and reinstalling the pairwise key while processing it
reinstallation of the Tunneled Direct-Link Setup (TDLS) PeerKey (TPK) key in the TDLS handshake
reinstallation of the group key (GTK) when processing a Wireless Network Management (WNM) Sleep Mode Response frame
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.