Apple tvOS up to 11.4.0 libxpc out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Apple tvOS up to 11.4.0. Affected by this issue is some unknown functionality of the component libxpc. Executing a manipulation can lead to out-of-bounds. This vulnerability is tracked as CVE-2018-4248. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Apple tvOS up to 11.4.0 (Digital Media Player). It has been declared as critical. This vulnerability affects an unknown part of the component libxpc. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An out-of-bounds read was addressed with improved input validation. This issue affected versions prior to iOS 11.4.1, macOS High Sierra 10.13.6, tvOS 11.4.1, watchOS 4.3.2.

The bug was discovered 07/09/2018. The weakness was disclosed 07/09/2018 by Colin Percival with Amazon as HT208936 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2018-4248 since 01/02/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The advisory points out:

An out-of-bounds read was addressed with improved input validation.

The vulnerability scanner Nessus provides a plugin with the ID 111110 (Apple TV < 11.4.1 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 371061 (Apple macOS High Sierra 10.13.6, Security Update 2018-004 Sierra, Security Update 2018-004 El Capitan Not Installed (HT208937)).

Upgrading to version 11.4.1 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 (111110) and SecurityFocus (BID 104460†). The entries VDB-112694, VDB-120959, VDB-120973 and VDB-120987 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: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 111110
Nessus Name: Apple TV < 11.4.1 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: tvOS 11.4.1

Timelineinfo

01/02/2018 🔍
06/13/2018 +162 days 🔍
07/09/2018 +26 days 🔍
07/09/2018 +0 days 🔍
07/09/2018 +0 days 🔍
07/10/2018 +1 days 🔍
07/16/2018 +6 days 🔍
03/01/2020 +594 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208936
Researcher: Colin Percival
Organization: Amazon
Status: Confirmed

CVE: CVE-2018-4248 (🔍)
GCVE (CVE): GCVE-0-2018-4248
GCVE (VulDB): GCVE-100-121012
SecurityFocus: 104460 - Intel Core Microprocessors CVE-2018-3665 Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 07/10/2018 14:26
Updated: 03/01/2020 07:04
Changes: 07/10/2018 14:26 (68), 03/01/2020 07:04 (14)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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