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FreeBSD : FreeBSD -- ftpd privilege escalation via ftpchroot feature (6d334fdb-f7e7-11ea-88f8-901b0ef719ab)

high Nessus Plugin ID 140628

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Synopsis

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

Description

A ftpd(8) bug in the implementation of the file system sandbox, combined with capabilities available to an authenticated FTP user, can be used to escape the file system restriction configured in ftpchroot(5). Moreover, the bug allows a malicious client to gain root privileges. Impact : A malicious FTP user can gain privileged access to an affected system.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?0af43b95

Plugin Details

Severity: High

ID: 140628

File Name: freebsd_pkg_6d334fdbf7e711ea88f8901b0ef719ab.nasl

Version: 1.5

Type: local

Published: 9/17/2020

Updated: 12/8/2022

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2020-7468

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/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, p-cpe:/a:freebsd: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: 9/16/2020

Vulnerability Publication Date: 9/15/2020

Reference Information

CVE: CVE-2020-7468

FreeBSD: SA-20:30.ftpd

IAVA: 2021-A-0008-S