Apple Mac OS X up to 10.11.4 Audio null pointer dereference

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CTI Interest Score
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A vulnerability has been found in Apple Mac OS X up to 10.11.4 (Operating System) and classified as problematic. Affected by this vulnerability is some unknown functionality of the component Audio. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

Audio in Apple OS X before 10.11.5 allows attackers to cause a denial of service (NULL pointer dereference) via a crafted app.

The weakness was shared 05/16/2016 by Juwei Lin (lokihardt) with TrendMicro as HT206567 as confirmed advisory (Website). It is possible to read the advisory at This vulnerability is known as CVE-2016-1798 since 01/13/2016. Attacking locally is a requirement. A single authentication is required for exploitation. The technical details are unknown and an exploit is not publicly available. The advisory points out:

A null pointer dereference was addressed through improved validation.

The vulnerability scanner Nessus provides a plugin with the ID 91228 (Mac OS X 10.11.x < 10.11.5 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 122912 (Apple Mac OS X v10.11.5 and Security Update 2016-003 Not Installed (APPLE-SA-2016-05-16-4)).

Upgrading to version 10.11.5 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 (91228). The entries 87425, 87434, 87435 and 87436 are related to this item.








  • end of life

CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
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NVD Base Score: 3.3
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Class: Null pointer dereference
CWE: CWE-476 / CWE-404
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍


Nessus ID: 91228
Nessus Name: Mac OS X 10.11.x < 10.11.5 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 881901
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 November-2016
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

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

Upgrade: Mac OS X 10.11.5


01/13/2016 🔍
05/16/2016 +124 days 🔍
05/16/2016 +0 days 🔍
05/16/2016 +0 days 🔍
05/18/2016 +2 days 🔍
05/19/2016 +1 days 🔍
05/20/2016 +1 days 🔍
08/19/2022 +2282 days 🔍



Advisory: HT206567
Researcher: Juwei Lin (lokihardt)
Organization: TrendMicro
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1798 (🔍)
SecurityTracker: 1035895
SecurityFocus: 90696 - Apple Mac OS X APPLE-SA-2016-05-16-4 Multiple Security Vulnerabilities

scip Labs:
See also: 🔍


Created: 05/18/2016 11:51 AM
Updated: 08/19/2022 05:02 PM
Changes: 05/18/2016 11:51 AM (78), 11/30/2018 12:00 PM (7), 08/19/2022 05:02 PM (3)
Complete: 🔍


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