Apple iCloud up to 7.3 on Windows WebKit input validation

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CVSS Meta Temp Score
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5.6$0-$5k0.00

A vulnerability was found in Apple iCloud up to 7.3 on Windows (Cloud Software). It has been declared as problematic. This vulnerability affects an unknown function of the component WebKit. The manipulation with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-20. As an impact it is known to affect availability.

The bug was discovered 03/29/2018. The weakness was released 03/29/2018 by Jeonghoon Shin (OSS-Fuzz) with Theori as HT208697 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability was named CVE-2018-4113 since 01/02/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The advisory points out:

An array indexing issue existed in the handling of a function in javascript core. This issue was addressed through improved checks.

The vulnerability scanner Nessus provides a plugin with the ID 109468 (Ubuntu 16.04 LTS / 17.10 : webkit2gtk vulnerabilities (USN-3635-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171677 (SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2018:3387-1)).

Upgrading to version 7.4 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 SecurityFocus (BID 102775) and Tenable (109468). Entries connected to this vulnerability are available at 111120, 111127, 111128 and 111129.

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VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍

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Nessus ID: 109468
Nessus Name: Ubuntu 16.04 LTS / 17.10 : webkit2gtk vulnerabilities (USN-3635-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
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OpenVAS ID: 53931
OpenVAS Name: Apple iCloud Security Updates(HT208697)-Windows
OpenVAS File: 🔍
OpenVAS Family: 🔍

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Qualys Name: 🔍

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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Upgrade: iCloud 7.4

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01/02/2018 🔍
01/23/2018 +21 days 🔍
03/29/2018 +65 days 🔍
03/29/2018 +0 days 🔍
03/29/2018 +0 days 🔍
03/31/2018 +2 days 🔍
04/03/2018 +3 days 🔍
05/01/2018 +28 days 🔍
06/03/2020 +764 days 🔍

Sourcesinfoedit

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

Advisory: HT208697
Researcher: Jeonghoon Shin (OSS-Fuzz)
Organization: Theori
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-4113 (🔍)
SecurityFocus: 102775 - WebKit Multiple Memory Corruption Vulnerabilities

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Entryinfoedit

Created: 03/31/2018 09:54 PM
Updated: 06/03/2020 12:41 PM
Changes: (8) vulnerability_discoverydate advisory_person_name advisory_person_nickname advisory_company_name advisory_confirm_url source_cve_assigned source_securityfocus_date source_securityfocus_class
Complete: 🔍

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