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FreeBSD : FreeBSD -- OpenSSH Keystroke Obfuscation Bypass (69e19c0b-debc-11ef-87ba-002590c1f29c)

high Nessus Plugin ID 214816

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Synopsis

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

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 69e19c0b-debc-11ef-87ba-002590c1f29c advisory.

 A logic error in the ssh(1) ObscureKeystrokeTiming feature (on by default) rendered this feature ineffective.
 A passive observer could detect which network packets contain real keystrokes, and infer the specific characters being transmitted from packet timing.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?2e764894

Plugin Details

Severity: High

ID: 214816

File Name: freebsd_pkg_69e19c0bdebc11ef87ba002590c1f29c.nasl

Version: 1.1

Type: local

Published: 1/30/2025

Updated: 1/30/2025

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2024-39894

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/30/2025

Vulnerability Publication Date: 7/2/2024

Reference Information

CVE: CVE-2024-39894