Apple macOS up to 10.13.5 Kernel memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Apple macOS up to 10.13.5. This vulnerability affects unknown code of the component Kernel. Executing a manipulation can lead to memory corruption. This vulnerability is registered as CVE-2018-4243. The attack needs to be launched locally. Furthermore, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Apple macOS up to 10.13.5 (Operating System) and classified as critical. This vulnerability affects an unknown part of the component Kernel. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 05/29/2018. The weakness was published 06/01/2018 by Ian Beer with Google Project Zero as HT208849 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2018-4243 since 01/02/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available. The advisory points out:

A buffer overflow was addressed with improved bounds checking.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 110324 (macOS 10.13.x < 10.13.5 Multiple Vulnerabilities), 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 c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370985 (Apple macOS High Sierra 10.13.5, Security Update 2018-003 Sierra, Security Update 2018-003 El Capitan Not Installed).

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 Exploit-DB (44848) and Tenable (110324). Similar entries are available at VDB-118673, VDB-118642, VDB-118643 and VDB-118644. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
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: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 110324
Nessus Name: macOS 10.13.x < 10.13.5 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: macOS 10.13.5 2018-003

Timelineinfo

01/02/2018 🔍
05/29/2018 +147 days 🔍
06/01/2018 +3 days 🔍
06/01/2018 +0 days 🔍
06/03/2018 +2 days 🔍
06/05/2018 +2 days 🔍
06/08/2018 +3 days 🔍
07/25/2024 +2239 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208849
Researcher: Ian Beer
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-4243 (🔍)
GCVE (CVE): GCVE-0-2018-4243
GCVE (VulDB): GCVE-100-118660
SecurityFocus: 103204
SecurityTracker: 1041027

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

Entryinfo

Created: 06/03/2018 14:15
Updated: 07/25/2024 12:17
Changes: 06/03/2018 14:15 (68), 02/12/2020 08:29 (15), 03/20/2023 07:55 (5), 03/20/2023 08:02 (1), 06/18/2024 11:59 (14), 07/25/2024 12:17 (2)
Complete: 🔍
Cache ID: 216::103

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