Problem Description:
Side channel attacks in the SAE implementations used by both
hostapd (AP) and wpa_supplicant (infrastructure BSS station/mesh
station). SAE (Simultaneous Authentication of Equals) is also known
as WPA3-Personal. The discovered side channel attacks may be able to
leak information about the used password based on observable timing
differences and cache access patterns. This might result in full
password recovery when combined with an offline dictionary attack and
if the password is not strong enough to protect against dictionary
attacks.
See
https://w1.fi/security/2019-1/sae-side-channel-attacks.txt
for a detailed description of the bug.
Impact:
All wpa_supplicant and hostapd versions with SAE support
(CONFIG_SAE=y in the build configuration and SAE being enabled in
the runtime configuration).