CVE-2019-9496 - CVE House
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Status published High CVE-2019-9496

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

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from Wi-Fi Alliance

View All →
CVE-2019-9499
The implementations of EAP-PWD in wpa_supplicant EAP Peer do not validate the scalar and element values in EAP-pwd-Commit
High 8.1
CVE-2019-9498
The implementations of EAP-PWD in hostapd EAP Server do not validate the scalar and element values in EAP-pwd-Commit
High 8.1
CVE-2019-9497
The implementations of EAP-PWD in hostapd EAP Server and wpa_supplicant EAP Peer do not validate the scalar and element values in EAP-pwd-Commit
High 8.1
CVE-2019-9495
The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channel attacks as a result of cache access patterns
Low 3.7
CVE-2019-9494
The implementations of SAE in hostapd and wpa_supplicant are vulnerable to side-channel attacks
Medium 5.9

Affected Vendor

Wi-Fi Alliance

View all reports →

Affected Software

hostapd with SAE support, wpa_supplicant with SAE support
Vulnerable Versions:
2.7

Timeline

Official Publish: April 17th, 2019
Last Modified: August 4th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-642

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.