Apple tvOS up to 11.1 Kernel memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Apple tvOS up to 11.1. This impacts an unknown function of the component Kernel. Such manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2017-13876. Local access is required to approach this attack. Moreover, an exploit is present. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Apple tvOS up to 11.1 (Digital Media Player) and classified as critical. Affected by this issue is an unknown part of the component Kernel. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The bug was discovered 12/02/2017. The weakness was disclosed 12/04/2017 by Ian Beer with Google Project Zero as HT208327 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is handled as CVE-2017-13876 since 08/30/2017. The attack needs to be approached locally. A simple authentication is necessary for exploitation. Technical details are unknown but a public exploit is available. The advisory points out:

A memory corruption issue was addressed with improved memory handling.

The exploit is available 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 2 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 105612 (Apple TV < 11.2 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. 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 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 databases at Exploit-DB (43325), Tenable (105612) and SecurityFocus (BID 102100†). The entries VDB-106777, VDB-107566, VDB-109077 and VDB-109291 are pretty similar. 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: 8.3
VulDB Meta Temp Score: 7.9

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 105612
Nessus Name: Apple TV < 11.2 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801863
OpenVAS Name: Apple MacOSX Security Updates(HT208331)-04
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: tvOS 11.2

Timelineinfo

08/30/2017 🔍
12/02/2017 +94 days 🔍
12/04/2017 +2 days 🔍
12/04/2017 +0 days 🔍
12/06/2017 +2 days 🔍
12/10/2017 +4 days 🔍
12/25/2017 +15 days 🔍
01/05/2018 +11 days 🔍
03/20/2025 +2631 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208327
Researcher: Ian Beer
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-13876 (🔍)
GCVE (CVE): GCVE-0-2017-13876
GCVE (VulDB): GCVE-100-110372
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: 12/10/2017 08:52
Updated: 03/20/2025 05:34
Changes: 12/10/2017 08:52 (81), 12/13/2019 08:16 (8), 01/26/2021 09:07 (3), 03/20/2025 05:34 (15)
Complete: 🔍
Cache ID: 216:A1A:103

Once again VulDB remains the best source for vulnerability data.

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