Apple macOS up to 10.14.4 Microcode information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Apple macOS up to 10.14.4. This affects an unknown function of the component Microcode. This manipulation causes information disclosure. This vulnerability is tracked as CVE-2018-12127. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Apple macOS up to 10.14.4 (Operating System). Affected by this vulnerability is some unknown functionality of the component Microcode. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality.

The bug was discovered 05/14/2019. The weakness was disclosed 05/13/2019 with Microsoft as HT210119 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2018-12127 since 06/11/2018. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue. The advisory points out:

Multiple information disclosure issues were addressed partially by updating the microcode and changing the OS scheduler to isolate the system from web content running in the browser. To completely address these issues, there are additional opt-in mitigations to disable hyper threading and enable microcode-based mitigations for all processes by default. Details of the mitigations can be found at https://support.apple.com/kb/HT210107.

The vulnerability scanner Nessus provides a plugin with the ID 209571 (Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172312 (SUSE Enterprise Linux Security Update for qemu (SUSE-SU-2019:1243-1)).

Upgrading to version 10.14.5 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 Tenable (209571) and SecurityFocus (BID 108299†). The entries VDB-134839, VDB-134840, VDB-134841 and VDB-134842 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.6
NVD Vector: 🔍

ADP CISA Base Score: 5.6
ADP CISA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209571
Nessus Name: Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: macOS 10.14.5

Timelineinfo

06/11/2018 🔍
05/10/2019 +333 days 🔍
05/13/2019 +3 days 🔍
05/13/2019 +0 days 🔍
05/14/2019 +1 days 🔍
05/15/2019 +1 days 🔍
05/30/2026 +2572 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT210119
Organization: Microsoft
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-12127 (🔍)
GCVE (CVE): GCVE-0-2018-12127
GCVE (VulDB): GCVE-100-134857
SecurityFocus: 108299 - Linux Kernel 'net/bluetooth/hidp/sock.c' Local Information Disclosure Vulnerability

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

Entryinfo

Created: 05/15/2019 08:53
Updated: 05/30/2026 04:19
Changes: 05/15/2019 08:53 (67), 06/10/2020 20:55 (5), 09/18/2023 11:40 (4), 10/26/2024 21:05 (16), 05/30/2026 04:19 (12)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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