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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade hostapdUpgrade wpa_supplicant | Aug 22, 2024 | Apr 17, 2019 |
| Debian | — | Upgrade wpa | Apr 12, 2019 | Apr 12, 2019 |
| Freebsd | — | Upgrade FreeBSDUpgrade wpa_supplicantUpgrade hostapd | Apr 23, 2019 | Apr 23, 2019 |
| Suse | — | Upgrade wpa_supplicant-guiUpgrade hostapdUpgrade wpa_supplicant | Feb 16, 2020 | Apr 17, 2019 |
| Ubuntu | — | Upgrade hostapdUpgrade wpasupplicant | Apr 24, 2019 | Apr 10, 2019 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Apr 17, 2019 |
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