The implementations of EAP-PWD in hostapd EAP Server, when built against a crypto library missing explicit validation on imported elements, do not validate the scalar and element values in EAP-pwd-Commit. An attacker may be able to use invalid scalar/element values to complete authentication, gaining session key and network access without needing or learning the password. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.4 are affected. 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-2019-9498
Reference (s):
- BUGTRAQ:20190515 FreeBSD Security Advisory FreeBSD-SA-19:03.wpa
- URL: https://seclists.org/bugtraq/2019/May/40
- https://w1.fi/security/2019-4/
- https://www.synology.com/security/advisory/Synology_SA_19_16
- FEDORA:FEDORA-2019-d03bae77f5