Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Wi-Fi Alliance hostapd with EAP-pwd support
2.7 to ≤ 2.7affected
Wi-Fi Alliance wpa_supplicant with EAP-pwd support
2.7 to ≤ 2.7affected
Wi-Fi Alliance hostapd with SAE support
2.4 to ≤ 2.4affected
Wi-Fi Alliance wpa_supplicant with SAE support
2.4 to ≤ 2.4affected
References
- https://w1.fi/security/2019-4/ ↗
- https://www.synology.com/security/advisory/Synology_SA_19_16 ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP4HDSDBLAE/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7AOFIEJTIZ/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVMJOFEYBGXZLFF5IOLW67SSOPKFEJP3/ ↗
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc ↗
- https://seclists.org/bugtraq/2019/May/40 ↗
- https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.html ↗