Apple macOS up to 10.14.0 Grand Central Dispatch memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.0$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Apple macOS up to 10.14.0. Affected is an unknown function of the component Grand Central Dispatch. Such manipulation leads to memory corruption. This vulnerability is referenced as CVE-2018-4426. The attack can only be performed from a local environment. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apple macOS up to 10.14.0 (Operating System). Affected by this issue is an unknown part of the component Grand Central Dispatch. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A memory corruption issue was addressed with improved memory handling. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5.

The bug was discovered 10/30/2018. The weakness was published 10/29/2018 by Jann Horn with Google Project Zero as HT209193 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability is handled as CVE-2018-4426 since 01/02/2018. Local access is required to approach this attack. A simple authentication is necessary for exploitation. The technical details are unknown and an exploit is not available. The advisory points out:

A memory corruption issue was addressed with improved memory handling.

The vulnerability scanner Nessus provides a plugin with the ID 118575 (macOS 10.13.6 Multiple Vulnerabilities (Security Update 2018-002)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371291 (Apple macOS Mojave 10.14.1, Security Update 2018-002 High Sierra, Security Update 2018-005 Sierra Not Installed (HT209193)).

Upgrading to version 10.14.1 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 (118575) and SecurityFocus (BID 104232†). Similar entries are available at VDB-117820, VDB-118107, VDB-121205 and VDB-126166. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.1

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 118575
Nessus Name: macOS 10.13.6 Multiple Vulnerabilities (Security Update 2018-002)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

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 10.14.1

Timelineinfo

01/02/2018 🔍
05/21/2018 +139 days 🔍
10/29/2018 +161 days 🔍
10/29/2018 +0 days 🔍
10/30/2018 +0 days 🔍
10/31/2018 +1 days 🔍
10/31/2018 +0 days 🔍
04/08/2020 +525 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT209193
Researcher: Jann Horn
Organization: Google Project Zero
Status: Confirmed

CVE: CVE-2018-4426 (🔍)
GCVE (CVE): GCVE-0-2018-4426
GCVE (VulDB): GCVE-100-126290
SecurityFocus: 104232 - Multiple CPU Hardware CVE-2018-3639 Information Disclosure Vulnerability

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

Entryinfo

Created: 10/31/2018 10:13
Updated: 04/08/2020 18:27
Changes: 10/31/2018 10:13 (69), 04/08/2020 18:27 (14)
Complete: 🔍
Cache ID: 216:2B6:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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