macOS 10.13 Authentication Bypass Remote Check (CVE-2017-13872)

High Nessus Plugin ID 105003

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VPR Score: 7.4

Synopsis

The remote host is affected by an authentication bypass vulnerability.

Description

The remote host is affected by an authentication bypass vulnerability.
A local attacker or a remote attacker with credentials for a standard user account has the ability to blank out the root account password.
This can allow an authenticated attacker to escalate privileges to root and execute commands and read files as a system administrator.
A remote attacker without credentials can set passwords on certain disabled accounts.

Note that if this plugin is successful, Nessus has set the password on the 'nobody' account to 'nessus', and you will need to reset this password/re-disable this account to clean up.

Solution

Apply Apple Security Update 2017-001.

See Also

https://support.apple.com/en-us/HT208315

http://www.nessus.org/u?2cf4b55a

http://www.nessus.org/u?9ff9ff45

http://www.nessus.org/u?1e5890f3

http://www.nessus.org/u?f367aab4

http://www.nessus.org/u?f9f9bbc3

Plugin Details

Severity: High

ID: 105003

File Name: macos_10_13_auth_bypass_remote_check.nasl

Version: 1.9

Type: remote

Family: Misc.

Published: 2017/12/04

Updated: 2019/11/12

Dependencies: 10267

Risk Information

Risk Factor: High

VPR Score: 7.4

CVSS Score Source: CVE-2017-13872

CVSS v2.0

Base Score: 9.3

Temporal Score: 7.7

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

CVSS v3.0

Base Score: 8.1

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:/o:apple:mac_os_x, cpe:/o:apple:macos

Excluded KB Items: global_settings/supplied_logins_only

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2017/11/29

Vulnerability Publication Date: 2017/11/28

Exploitable With

Metasploit (Mac OS X Root Privilege Escalation)

Reference Information

CVE: CVE-2017-13872

BID: 101981