FreeBSD : FreeBSD -- SAE side-channel attacks (7e53f9cc-656d-11e9-8e67-206a8a720317)

medium Nessus Plugin ID 124222

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Synopsis

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

Description

Side channel attacks in the SAE implementations used by both hostapd (AP) and wpa_supplicant (infrastructure BSS station/mesh station). SAE (Simultaneous Authentication of Equals) is also known as WPA3-Personal. The discovered side channel attacks may be able to leak information about the used password based on observable timing differences and cache access patterns. This might result in full password recovery when combined with an offline dictionary attack and if the password is not strong enough to protect against dictionary attacks.

See https://w1.fi/security/2019-1/sae-side-channel-attacks.txt for a detailed description of the bug. Impact : All wpa_supplicant and 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.

Plugin Details

Severity: Medium

ID: 124222

File Name: freebsd_pkg_7e53f9cc656d11e98e67206a8a720317.nasl

Version: 1.2

Type: local

Family: FreeBSD Local Security Checks

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: 4.3

Temporal Score: 3.2

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

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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-2019-9494

Detections

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