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Files from Mathy Vanhoef

Email addressmathy.vanhoef at cs.kuleuven.be
First Active2017-10-16
Last Active2018-08-15
FreeBSD Security Advisory - FreeBSD-SA-18:11.hostapd
Posted Aug 15, 2018
Authored by Mathy Vanhoef | Site security.freebsd.org

FreeBSD Security Advisory - When using WPA2, EAPOL-Key frames with the Encrypted flag and without the MIC flag set, the data field was decrypted first without verifying the MIC. When the dta field was encrypted using RC4, for example, when negotiating TKIP as a pairwise cipher, the unauthenticated but decrypted data was subsequently processed. This opened wpa_supplicant(8) to abuse by decryption and recovery of sensitive information contained in EAPOL-Key messages. All users of the WPA2 TKIP pairwise cipher are vulnerable to information, for example, the group key.

tags | advisory
systems | freebsd, bsd
advisories | CVE-2018-14526
MD5 | 6161d24d13a49c91a2677cc51cfcb2a2
FreeBSD Security Advisory - FreeBSD-SA-17:07.wpa
Posted Oct 19, 2017
Authored by Mathy Vanhoef | Site security.freebsd.org

FreeBSD Security Advisory - A vulnerability was found in how a number of implementations can be triggered to reconfigure WPA/WPA2/RSN keys (TK, GTK, or IGTK) by replaying a specific frame that is used to manage the keys. Such reinstallation of the encryption key can result in two different types of vulnerabilities: disabling replay protection and significantly reducing the security of encryption to the point of allowing frames to be decrypted or some parts of the keys to be determined by an attacker depending on which cipher is used.

tags | advisory, vulnerability
systems | freebsd, bsd
advisories | 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
MD5 | dd1ceecd8830ca90a5666d6a9425ade7
Key Reinstallation: Forcing Nonce Reuse In WPA2
Posted Oct 16, 2017
Authored by Frank Piessens, Mathy Vanhoef | Site krackattacks.com

Whitepaper called Reinstallation Attacks: Forcing Nonce Reuse in WPA2. This research paper will be presented on at the Computer and Communications Security (CCS) conference on November 1, 2017. This paper details a flaw in the WPA2 protocol itself and most devices that makes use of WPA2 are affected.

tags | paper, crypto, protocol
advisories | CVE-2017-13077, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081, CVE-2017-13082, CVE-2017-13084, CVE-2017-13086, CVE-2017-13087, CVE-2017-13088
MD5 | 9ae08a7eee791f7977ada5c05ba50f29
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