Apple iOS up to 12.1.2 libxpc memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Apple iOS up to 12.1.2. Affected is an unknown function of the component libxpc. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2019-6218. An attack has to be approached locally. Furthermore, there is an exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS up to 12.1.2 (Smartphone Operating System) and classified as critical. This issue affects an unknown functionality 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 bug was discovered 01/22/2019. The weakness was shared 01/22/2019 by Ian Beer with Google Project Zero as HT209443 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2019-6218 since 01/11/2019. 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 input validation.

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 $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 121391 (macOS and Mac OS X Multiple Vulnerabilities (Security Update 2019-001)), 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 l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371589 (Apple macOS Mojave 10.14.3, Security Update 2019-001 High Sierra, Security Update 2019-001 Sierra Not Installed (HT209446)).

Upgrading to version 12.1.3 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 (121391) and SecurityFocus (BID 106323†). The entries VDB-128295, VDB-130034, VDB-130004 and VDB-130005 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 7.7

VulDB Base Score: 8.6
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

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: 121391
Nessus Name: macOS and Mac OS X Multiple Vulnerabilities (Security Update 2019-001)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

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: iOS 12.1.3

Timelineinfo

12/14/2018 🔍
01/11/2019 +28 days 🔍
01/22/2019 +11 days 🔍
01/22/2019 +0 days 🔍
01/22/2019 +0 days 🔍
01/23/2019 +1 days 🔍
01/25/2019 +2 days 🔍
02/03/2025 +2201 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT209443
Researcher: Ian Beer
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-6218 (🔍)
GCVE (CVE): GCVE-0-2019-6218
GCVE (VulDB): GCVE-100-130019
SecurityFocus: 106323 - SQLite CVE-2018-20346 Remote Integer Overflow Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 01/23/2019 12:38
Updated: 02/03/2025 21:21
Changes: 01/23/2019 12:38 (71), 05/04/2020 16:22 (12), 07/02/2023 12:22 (5), 02/03/2025 21:21 (22)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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