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Debian DSA-4430-1 Critical: Wpa Authentication Flaws Reporting

debian
Calendar Grey April 11, 2019
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Uncover the specifics of Debian Security Advisory DSA-4430-1 and the significant wpa security enhancement that tackles severe vulnerabilities.
Mathy Vanhoef (NYUAD) and Eyal Ronen (Tel Aviv University & KU Leuven) found multiple vulnerabilities in the WPA implementation found in wpa_supplication (station) and hostapd ...

Summary

CVE-2019-9495

Cache-based side-channel attack against the EAP-pwd implementation: an
attacker able to run unprivileged code on the target machine (including for
example javascript code in a browser on a smartphone) during the handshake
could deduce enough information to discover the password in a dictionary
attack.

CVE-2019-9497

Reflection attack against EAP-pwd server implementation: a lack of
validation of received scalar and elements value in the EAP-pwd-Commit
messages could result in attacks that would be able to complete EAP-pwd
authentication exchange without the attacker having to know the password.
This does not result in the attacker being able to derive the session key,
complete the following key exchange and access the network.

CVE-2019-9498

EAP-pwd server missing commit validation for scalar/element: hostapd
doesn't validate values received in the EAP-pwd-Commit message, so an
attacker could use a specially crafted commit message ...

Read the Full Advisory

Severity
critical
Lowest
Low
Medium
High
Critical

Package: wpa
CVE ID: CVE-2019-9495 CVE-2019-9497 CVE-2019-9498 CVE-2019-9499

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