Apple iOS up to 11.4.1 Memory Management Routine use after free

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7.4	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in Apple iOS up to 11.4.1. The affected element is an unknown function of the component Memory Management Routine. Such manipulation leads to use after free. This vulnerability is documented as CVE-2018-4318. The attack can be executed remotely. Additionally, an exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Apple iOS up to 11.4.1 (Smartphone Operating System). It has been rated as critical. Affected by this issue is an unknown function of the component Memory Management Routine. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A use after free issue was addressed with improved memory management. This issue affected versions prior to iOS 12, tvOS 12, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

The bug was discovered 09/12/2018. The weakness was released 04/03/2019. This vulnerability is handled as CVE-2018-4318 since 01/02/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available.

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 81 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 119323 (GLSA-201812-04 : WebkitGTK+: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197266 (Ubuntu Security Notification for Webkit2gtk Vulnerabilities (USN-3781-1)).

Upgrading to version 12.0 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (45488) and Tenable (119323). Entries connected to this vulnerability are available at VDB-129059, VDB-129108, VDB-129109 and VDB-129110. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Smartphone Operating System

Vendor

Apple

Name

Version

License

commercial

Website

Vendor: https://www.apple.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 119323
Nessus Name: GLSA-201812-04 : WebkitGTK+: Multiple vulnerabilities
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: 🔍

0-Day Time: 🔍

Upgrade: iOS 12.0

Timelineinfo

01/02/2018 🔍
09/12/2018 +253 days 🔍
12/02/2018 +81 days 🔍
12/03/2018 +1 days 🔍
04/03/2019 +121 days 🔍
04/04/2019 +1 days 🔍
01/18/2025 +2116 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2018-4318 (🔍)
GCVE (CVE): GCVE-0-2018-4318
GCVE (VulDB): GCVE-100-132776
scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 04/04/2019 09:16
Updated: 01/18/2025 14:13
Changes: 04/04/2019 09:16 (72), 05/24/2020 16:35 (1), 08/22/2023 07:24 (4), 01/18/2025 14:13 (22)
Complete: 🔍
Cache ID: 216::103

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