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FreeBSD : FreeBSD -- SAE confirm missing state validation (98b71436-656d-11e9-8e67-206a8a720317)

high Nessus Plugin ID 124223

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

When hostapd is used to operate an access point with SAE (Simultaneous Authentication of Equals; also known as WPA3-Personal), an invalid authentication sequence could result in the hostapd process terminating due to a NULL pointer dereference when processing SAE confirm message. This was caused by missing state validation steps when processing the SAE confirm message in hostapd/AP mode.

See https://w1.fi/security/2019-3/sae-confirm-missing-state-validation.txt for a detailed description of the bug. Impact : All hostapd versions with SAE support (CONFIG_SAE=y in the build configuration and SAE being enabled in the runtime configuration).

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?2a9f4dcd

Plugin Details

Severity: High

ID: 124223

File Name: freebsd_pkg_98b71436656d11e98e67206a8a720317.nasl

Version: 1.2

Type: local

Published: 4/23/2019

Updated: 1/23/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:hostapd, p-cpe:/a:freebsd:freebsd:wpa_supplicant, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 4/23/2019

Vulnerability Publication Date: 4/10/2019

Reference Information

CVE: CVE-2019-9496