Vulnerability CVE-2019-9496
Published: 2019-04-17

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.

Type:

CWE-287

 (Improper Authentication)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
W1.fi -> Hostapd 
W1.fi -> Wpa supplicant 
Fedoraproject -> Fedora 

 References:
http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03.wpa.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP4HDSDBLAE/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SVMJOFEYBGXZLFF5IOLW67SSOPKFEJP3/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7AOFIEJTIZ/
https://seclists.org/bugtraq/2019/May/40
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc
https://w1.fi/security/2019-3/
https://www.synology.com/security/advisory/Synology_SA_19_16
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