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.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9495
Reference (s):
- BUGTRAQ:20190515 FreeBSD Security Advisory FreeBSD-SA-19:03.wpa
- URL: https://seclists.org/bugtraq/2019/May/40
- https://w1.fi/security/2019-2/
- https://www.synology.com/security/advisory/Synology_SA_19_16
- FEDORA:FEDORA-2019-d03bae77f5