Apple watchOS up to 4.1 Kernel type conversion

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Apple watchOS up to 4.1. This impacts an unknown function of the component Kernel. The manipulation results in type conversion. This vulnerability is known as CVE-2017-13855. Attacking locally is a requirement. Furthermore, an exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Apple watchOS up to 4.1 (Smartwatch Operating System). Affected is an unknown function of the component Kernel. The manipulation with an unknown input leads to a type conversion vulnerability. CWE is classifying the issue as CWE-704. The product does not correctly convert an object, resource, or structure from one type to a different type. This is going to have an impact on confidentiality.

The bug was discovered 12/02/2017. The weakness was published 12/05/2017 by Jann Horn with Google Project Zero as HT208325 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is traded as CVE-2017-13855 since 08/30/2017. The attack needs to be approached locally. The successful exploitation requires a authentication. Technical details are unknown but a public exploit is available. The advisory points out:

A type confusion issue was addressed with improved memory handling.

The exploit is shared for download 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 $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 105080 (macOS 10.13.x < 10.13.2 Multiple Vulnerabilities (Meltdown)), 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 370677 (Apple macOS High Sierra 10.13.2, Security Update 2017-002 Sierra, and Security Update 2017-005 El Capitan Not Installed).

Upgrading to version 4.2 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 (43318), Tenable (105080) and SecurityFocus (BID 102100†). Similar entries are available at VDB-106777, VDB-107566, VDB-108975 and VDB-109077. 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: 4.4
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Type conversion
CWE: CWE-704
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: 105080
Nessus Name: macOS 10.13.x < 10.13.2 Multiple Vulnerabilities (Meltdown)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 64745
OpenVAS Name: Apple MacOSX Security Updates(HT208331)-02
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: watchOS 4.2

Timelineinfo

08/30/2017 🔍
12/02/2017 +94 days 🔍
12/05/2017 +3 days 🔍
12/05/2017 +0 days 🔍
12/06/2017 +1 days 🔍
12/07/2017 +1 days 🔍
12/11/2017 +4 days 🔍
12/25/2017 +14 days 🔍
01/14/2025 +2577 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208325
Researcher: Jann Horn
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-13855 (🔍)
GCVE (CVE): GCVE-0-2017-13855
GCVE (VulDB): GCVE-100-110460
SecurityFocus: 102100 - Apple iOS/WatchOS/tvOS/macOS Multiple Security Vulnerabilities
SecurityTracker: 1039952

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 12/11/2017 12:09
Updated: 01/14/2025 05:02
Changes: 12/11/2017 12:09 (81), 12/13/2019 15:56 (8), 01/26/2021 16:10 (4), 01/14/2025 05:02 (15)
Complete: 🔍
Cache ID: 216::103

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