Apple macOS up to 10.13.3 Kernel Meltdown information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in Apple macOS up to 10.13.3 and classified as critical. This vulnerability affects unknown code of the component Kernel. The manipulation leads to information disclosure (Meltdown). This vulnerability is uniquely identified as CVE-2017-5754. The attack is possible to be carried out remotely. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Apple macOS up to 10.13.3 (Operating System) and classified as critical. This issue affects an unknown part of the component Kernel. The manipulation with an unknown input leads to a information disclosure vulnerability (Meltdown). Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache.

The bug was discovered 01/03/2018. The weakness was disclosed 01/26/2018 by Jann Horn (ERNE) with University of Adelaide as HT208465 as confirmed advisory (Website). The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2017-5754 since 02/01/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. 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:

Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 106315 (AIX 7.2 TL 1 : spectre_meltdown (IJ03035) (Meltdown) (Spectre)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family AIX Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370738 (Apple macOS High Sierra 10.13.3, Security Update 2018-001 Sierra, and Security Update 2018-001 El Capitan Not Installed (Meltdown)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (106315) and SecurityFocus (BID 102378†). The entries VDB-110054, VDB-111325, VDB-111326 and VDB-111327 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: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.6
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Meltdown
Class: Information disclosure / Meltdown
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: 106315
Nessus Name: AIX 7.2 TL 1 : spectre_meltdown (IJ03035) (Meltdown) (Spectre)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 870324
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4056892)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Suricata ID: 2025195
Suricata Class: 🔍
Suricata Message: 🔍

Timelineinfo

02/01/2017 🔍
01/03/2018 +336 days 🔍
01/03/2018 +0 days 🔍
01/04/2018 +1 days 🔍
01/23/2018 +19 days 🔍
01/25/2018 +2 days 🔍
01/26/2018 +1 days 🔍
01/28/2018 +2 days 🔍
01/31/2025 +2560 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208465
Researcher: Jann Horn (ERNE)
Organization: University of Adelaide
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-5754 (🔍)
GCVE (CVE): GCVE-0-2017-5754
GCVE (VulDB): GCVE-100-112577

OVAL: 🔍

CERT: 🔍
SecurityFocus: 102378 - Multiple CPU Hardware CVE-2017-5754 Information Disclosure Vulnerability
SecurityTracker: 1040071

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

Entryinfo

Created: 01/28/2018 18:53
Updated: 01/31/2025 06:20
Changes: 01/28/2018 18:53 (88), 12/31/2019 06:27 (6), 02/02/2021 07:42 (2), 01/31/2025 06:20 (16)
Complete: 🔍
Cache ID: 216:F8E:103

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

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