CVE-2019-9496

HIGH

hostapd and wpa_supplicant < 2.7 - Denial of Service via SAE Confirm Message

Title source: llm

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.

References (9)

Core 9

Core References

Patch, Vendor Advisory x_refsource_confirm

https://w1.fi/security/2019-3/

Vendor Advisory x_refsource_confirm

https://www.synology.com/security/advisory/Synology_SA_19_16

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP4HDSDBLAE/

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7AOFIEJTIZ/

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVMJOFEYBGXZLFF5IOLW67SSOPKFEJP3/

Various Sources vendor-advisory x_refsource_freebsd

https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc

Mailing List mailing-list x_refsource_bugtraq

https://seclists.org/bugtraq/2019/May/40

Exploit, Third Party Advisory x_refsource_misc

http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03.wpa.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.html

Scores

CVSS v3 7.5

EPSS 0.0522

EPSS Percentile 91.4%

Attack Vector NETWORK

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

Details

CWE

CWE-287 CWE-642

Status published

Products (5)

fedoraproject/fedora 28

fedoraproject/fedora 29

fedoraproject/fedora 30

w1.fi/hostapd < 2.7

w1.fi/wpa_supplicant < 2.7

Published Apr 17, 2019

Tracked Since Feb 18, 2026