Apple macOS up to 10.13.6 libxpc memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple macOS up to 10.13.6. It has been classified as critical. Impacted is an unknown function of the component libxpc. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2018-4280. An attack has to be approached locally. Furthermore, there is an exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apple macOS up to 10.13.6 (Operating System). It has been rated as critical. This issue affects an unknown code block of the component libxpc. 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 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 shared 07/09/2018 by Colin Percival with Amazon as HT208937 as confirmed advisory (Website). The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2018-4280 since 01/02/2018. The attack may be initiated remotely. No form of authentication is needed for a successful 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 available at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. 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 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†). The entries VDB-112694, VDB-120959, VDB-120973 and VDB-120987 are related to this item. Several companies clearly confirm that VulDB is the primary source for best 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
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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
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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: 🔍

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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: HT208937
Researcher: Colin Percival
Organization: Amazon
Status: Confirmed

CVE: CVE-2018-4280 (🔍)
GCVE (CVE): GCVE-0-2018-4280
GCVE (VulDB): GCVE-100-121049
SecurityFocus: 104460 - Intel Core Microprocessors CVE-2018-3665 Information Disclosure Vulnerability

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

Entryinfo

Created: 07/10/2018 14:33
Updated: 03/01/2020 10:24
Changes: 07/10/2018 14:33 (68), 03/01/2020 10:24 (18)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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