Apple tvOS up to 11.4.0 libxpc memory corruption

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5.9$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Apple tvOS up to 11.4.0. Affected by this vulnerability is an unknown functionality of the component libxpc. Performing a manipulation results in memory corruption. This vulnerability is identified as CVE-2018-4280. The attack is only possible with local access. Additionally, an exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple tvOS up to 11.4.0 (Digital Media Player). It has been classified as critical. This affects some unknown functionality of the component libxpc. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A memory corruption issue was addressed with improved memory handling. 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 released 07/09/2018 by Colin Percival with Amazon as HT208936 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2018-4280 since 01/02/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. 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 memory corruption 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 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 Exploit-DB (46248), Tenable (111110) and SecurityFocus (BID 104460†). Entries connected to this vulnerability are available at VDB-112694, VDB-120959, VDB-120973 and VDB-120987. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
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CVSSv2info

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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: 🔍

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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: 🔍
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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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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 🔍
02/29/2020 +593 days 🔍

Sourcesinfo

Vendor: apple.com

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

CVE: CVE-2018-4280 (🔍)
GCVE (CVE): GCVE-0-2018-4280
GCVE (VulDB): GCVE-100-121011
SecurityFocus: 104460 - Intel Core Microprocessors CVE-2018-3665 Information Disclosure Vulnerability

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

Entryinfo

Created: 07/10/2018 14:26
Updated: 02/29/2020 21:58
Changes: 07/10/2018 14:26 (68), 02/29/2020 21:58 (18)
Complete: 🔍
Cache ID: 216::103

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