An invalid authentication sequence could result in the hostapd process terminating due to missing state validation steps when processing the SAE confirm message when in hostapd/AP mode. All version of hostapd with SAE support are vulnerable. An attacker may force the hostapd process to terminate, performing a denial of service attack. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.7 are affected.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9496
Reference (s):
- BUGTRAQ:20190515 FreeBSD Security Advisory FreeBSD-SA-19:03.wpa
- URL: https://seclists.org/bugtraq/2019/May/40
- https://w1.fi/security/2019-3/
- https://www.synology.com/security/advisory/Synology_SA_19_16
- FEDORA:FEDORA-2019-d03bae77f5