Apple Mac OS X up to 10.11.3 Kernel race condition

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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple Mac OS X up to 10.11.3. It has been rated as critical. Affected by this issue is some unknown functionality of the component Kernel. This manipulation causes race condition. This vulnerability is registered as CVE-2016-1757. The attack needs to be launched locally. Furthermore, an exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Apple Mac OS X up to 10.11.3 (Operating System) and classified as critical. Affected by this vulnerability is an unknown function of the component Kernel. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Race condition in the kernel in Apple iOS before 9.3 and OS X before 10.11.4 allows attackers to execute arbitrary code in a privileged context via a crafted app.

The weakness was published 03/21/2016 by Ian Beer with Google Project Zero as HT206167 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2016-1757 since 01/12/2016. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available. The advisory points out:

A race condition existed during the creation of new processes. This was addressed through improved state handling.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 90096 (Mac OS X 10.11.x < 10.11.4 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 124842 (Apple Mac OS X v10.11.4 and Security Update 2016-002 Not Installed (APPLE-SA-2016-03-21-5)).

Upgrading to version 10.11.4 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 (39595), Tenable (90096) and SecurityFocus (BID 71820†). Similar entries are available at VDB-68484, VDB-73556, VDB-81414 and VDB-81421. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.0
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

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

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 90096
Nessus Name: Mac OS X 10.11.x < 10.11.4 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 March-2016
OpenVAS File: 🔍
OpenVAS Family: 🔍

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: Mac OS X 10.11.4

Timelineinfo

01/12/2016 🔍
03/21/2016 +68 days 🔍
03/21/2016 +0 days 🔍
03/21/2016 +0 days 🔍
03/23/2016 +1 days 🔍
03/23/2016 +0 days 🔍
11/11/2024 +3155 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT206167
Researcher: Ian Beer
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1757 (🔍)
GCVE (CVE): GCVE-0-2016-1757
GCVE (VulDB): GCVE-100-81445
SecurityFocus: 71820
SecurityTracker: 1035353

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 03/23/2016 12:11
Updated: 11/11/2024 20:48
Changes: 03/23/2016 12:11 (66), 09/09/2018 11:23 (17), 07/11/2022 08:18 (4), 06/11/2024 12:06 (15), 11/11/2024 20:48 (2)
Complete: 🔍
Cache ID: 216::103

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