Apple iCloud up to 7.6 on Windows use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple iCloud up to 7.6 on Windows. It has been rated as critical. The affected element is an unknown function. This manipulation causes use after free. This vulnerability appears as CVE-2018-4306. The attack may be initiated remotely. In addition, an exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Apple iCloud up to 7.6 on Windows (Cloud Software) and classified as critical. Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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 presented 04/03/2019. This vulnerability is known as CVE-2018-4306 since 01/02/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available.

It is possible to download the exploit 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 $5k-$25k. 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 7.7 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 (45482) and Tenable (119323). See VDB-129059, VDB-129108, VDB-129109 and VDB-129110 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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

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: 🔍

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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: iCloud 7.7

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 🔍
01/10/2025 +2108 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2018-4306 (🔍)
GCVE (CVE): GCVE-0-2018-4306
GCVE (VulDB): GCVE-100-132853
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 04/04/2019 09:09
Updated: 01/10/2025 14:54
Changes: 04/04/2019 09:09 (71), 05/24/2020 11:36 (1), 08/22/2023 12:06 (4), 01/10/2025 14:54 (22)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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