CVE-2019-9496

An invalid authentication sequence could result in the hostapd process terminating due to missing state validation steps

Description

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.

Categories

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.12% Top 15%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory FreeBSD.org Vendor Advisory opensuse.org Vendor Advisory w1.fi
Affected: Wi-Fi Alliance hostapd with SAE support
Affected: Wi-Fi Alliance wpa_supplicant with SAE support
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2019-9496?
CVE-2019-9496 has been scored as a high severity vulnerability.
How to fix CVE-2019-9496?
To fix CVE-2019-9496, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-9496 being actively exploited in the wild?
It is possible that CVE-2019-9496 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-9496?
CVE-2019-9496 affects Wi-Fi Alliance hostapd with SAE support, Wi-Fi Alliance wpa_supplicant with SAE support.
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