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CVE-2019-9495

The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channel attacks as a result of cache access patterns.

Impact

The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channel attacks as a result of cache access patterns. All versions of hostapd and wpa_supplicant with EAP-PWD support are vulnerable. The ability to install and execute applications is necessary for a successful attack. Memory access patterns are visible in a shared cache. Weak passwords may be cracked. Versions of hostapd/wpa_supplicant 2.7 and newer, are not vulnerable to the timing attack described in CVE-2019-9494. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.

Affected products

VendorProductAffected versions
W1.FiHostapd
through 2.7
W1.FiWpa Supplicant
through 2.7
FedoraprojectFedora
Versions 28, 29, 30
OpensuseBackports Sle
Version 15.0
OpensuseLeap
Version 15.1
SynologyRadius Server
Version 3.0
SynologyRouter Manager
before 1.2.3-8017
DebianDebian Linux
Version 8.0
FreebsdFreebsd
Versions 11.2, 12.0

Weakness classification

CWE-524CWE-203

References