Apple macOS up to 10.13.5 Kernel access control

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6.3$0-$5k0.00

A vulnerability, which was classified as critical, has been found in Apple macOS up to 10.13.5 (Operating System). Affected by this issue is an unknown functionality of the component Kernel. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability.

The bug was discovered 05/08/2018. The weakness was presented 06/01/2018 by Andy Lutomirski with LinkedIn as HT208849 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability is handled as CVE-2018-8897 since 03/21/2018. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project. The advisory points out:

In some circumstances, some operating systems may not expect or properly handle an Intel architecture debug exception after certain instructions. The issue appears to be from an undocumented side effect of the instructions. An attacker might utilize this exception handling to gain access to Ring 0 and access sensitive memory or control operating system processes.

It is declared as highly functional. The exploit is available at exploit-db.com. The vulnerability scanner Nessus provides a plugin with the ID 109610 (KB4103726: Windows Server 2012 May 2018 Security Update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 390158 (Oracle VM Server for x86 Security Update for xen (OVMSA-2018-0272)).

Upgrading to version 10.13.5 2018-003 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 104071) and Tenable (109610). See 113918, 113919, 117441 and 117442 for similar entries.

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VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-264
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

Price Prediction: 🔍
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Nessus ID: 109610
Nessus Name: KB4103726: Windows Server 2012 May 2018 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 52254
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4103725)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: mov_ss.rb
MetaSploit Name: Microsoft Windows POP/MOV SS Local Privilege Elevation Vulnerability
MetaSploit File: 🔍

Exploit-DB: 🔍

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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

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Upgrade: macOS 10.13.5 2018-003

Timelineinfoedit

03/21/2018 🔍
05/08/2018 +47 days 🔍
05/08/2018 +0 days 🔍
05/08/2018 +0 days 🔍
05/08/2018 +0 days 🔍
06/01/2018 +24 days 🔍
06/01/2018 +0 days 🔍
06/03/2018 +2 days 🔍
02/12/2020 +619 days 🔍

Sourcesinfoedit

Vendor: https://www.apple.com/

Advisory: HT208849
Researcher: Andy Lutomirski
Organization: LinkedIn
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-8897 (🔍)
OVAL: 🔍

SecurityFocus: 104071 - Microsoft Windows Kernel CVE-2018-8897 Local Privilege Escalation Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20180712
See also: 🔍

Entryinfoedit

Created: 06/03/2018 02:14 PM
Updated: 02/12/2020 08:23 AM
Changes: (8) vulnerability_discoverydate advisory_confirm_url exploit_availability exploit_publicity exploit_url source_cve_assigned source_securityfocus_date source_securityfocus_class
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