Apple Mac OS X up to 10.11.1 Kernel denial of service

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Apple Mac OS X up to 10.11.1 (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 denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The kernel in Apple iOS before 9.2, OS X before 10.11.2, tvOS before 9.1, and watchOS before 2.1 allows attackers to cause a denial of service via a crafted app, a different vulnerability than CVE-2015-7040, CVE-2015-7041, and CVE-2015-7042.

The weakness was published 12/08/2015 by Tarjei Mandt as HT205637 as confirmed advisory (Website). The advisory is shared at The identification of this vulnerability is CVE-2015-7043 since 09/16/2015. The exploitation is known to be difficult. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue. The advisory points out:

Multiple denial of service issues were addressed through improved memory handling.

The vulnerability scanner Nessus provides a plugin with the ID 87321 (Mac OS X Multiple Vulnerabilities (Security Updates 2015-005 / 2015-008)), 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.

Upgrading to version 10.11.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (87321).








CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
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Class: Denial of service
CWE: CWE-404

Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept
Download: 🔍

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Nessus ID: 87321
Nessus Name: Mac OS X Multiple Vulnerabilities (Security Updates 2015-005 / 2015-008)
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Threat Intelligenceinfo

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Recommended: Upgrade
Status: 🔍

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Upgrade: Mac OS X 10.11.2


09/16/2015 🔍
12/08/2015 +83 days 🔍
12/08/2015 +0 days 🔍
12/09/2015 +1 days 🔍
12/11/2015 +2 days 🔍
12/11/2015 +0 days 🔍
06/29/2022 +2392 days 🔍



Advisory: HT205637
Researcher: Tarjei Mandt
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-7043 (🔍)
SecurityTracker: 1034344
SecurityFocus: 78719

scip Labs:


Created: 12/09/2015 02:04 PM
Updated: 06/29/2022 02:31 PM
Changes: 12/09/2015 02:04 PM (42), 04/28/2018 11:55 PM (23), 06/29/2022 02:28 PM (2), 06/29/2022 02:31 PM (1)
Complete: 🔍
Cache ID: 3:C1F:40


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