Apple macOS up to 10.12.3 Kernel race condition

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

A vulnerability was found in Apple macOS up to 10.12.3 (Operating System). It has been declared as critical. Affected by this vulnerability is an unknown part 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 bug was discovered 03/27/2017. The weakness was disclosed 03/27/2017 by John Villamil with Google Project Zero as HT207615 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2017-2456 since 12/01/2016. Attacking locally is a requirement. A single authentication is necessary for exploitation. Technical details are unknown but a public exploit is available. The advisory points out:

A race condition was addressed through improved memory handling.

After 3 days, there has been an exploit disclosed. 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 99264 (Apple TV < 10.2 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r.

Upgrading to version 10.12.4 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 Tenable (99264) and Exploit-DB (41778). The entries 98727, 98601, 98602 and 98603 are pretty similar.

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.5

VulDB Base Score: 8.8
VulDB Temp Score: 7.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Local: Yes
Remote: No

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

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Price Prediction: 🔍
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Nessus ID: 99264
Nessus Name: Apple TV < 10.2 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-HT207615
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Exploit Delay Time: 🔍

Upgrade: macOS 10.12.4

Timelineinfo

12/01/2016 🔍
03/27/2017 +116 days 🔍
03/27/2017 +0 days 🔍
03/27/2017 +0 days 🔍
03/27/2017 +0 days 🔍
03/28/2017 +1 days 🔍
03/30/2017 +2 days 🔍
03/30/2017 +0 days 🔍
04/01/2017 +2 days 🔍
04/10/2017 +9 days 🔍
11/20/2022 +2050 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207615
Researcher: John Villamil
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-2456 (🔍)
SecurityTracker: 1038138
SecurityFocus: 97137 - Apple iOS/tvOS/macOS/watchOS Multiple Security Vulnerabilities

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

Entryinfo

Created: 03/28/2017 11:12
Updated: 11/20/2022 08:42
Changes: 03/28/2017 11:12 (84), 10/18/2019 10:15 (6), 11/20/2022 08:42 (5)
Complete: 🔍

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