Apple iCloud up to 11.2 on Windows WebKit memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple iCloud up to 11.2 on Windows and classified as critical. Affected is an unknown function of the component WebKit. Such manipulation leads to memory corruption. This vulnerability is traded as CVE-2020-9894. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iCloud up to 11.2 on Windows (Cloud Software). It has been rated as critical. Affected by this issue is an unknown code of the component WebKit. 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 weakness was shared 08/10/2020 with Zero Day Initiative as HT211294 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is handled as CVE-2020-9894. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The advisory points out:

An out-of-bounds read was addressed with improved input validation.

The vulnerability scanner Nessus provides a plugin with the ID 241427 (RHEL 7 : webkitgtk4 (RHSA-2025:10364)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 11.3 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (241427). The entries VDB-158596, VDB-158616, VDB-158636 and VDB-158667 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 241427
Nessus Name: RHEL 7 : webkitgtk4 (RHSA-2025:10364)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: iCloud 11.3

Timelineinfo

03/02/2020 🔍
08/10/2020 +161 days 🔍
08/10/2020 +0 days 🔍
08/13/2020 +3 days 🔍
07/07/2025 +1789 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT211294
Organization: Zero Day Initiative
Status: Confirmed

CVE: CVE-2020-9894 (🔍)
GCVE (CVE): GCVE-0-2020-9894
GCVE (VulDB): GCVE-100-159884
See also: 🔍

Entryinfo

Created: 08/13/2020 15:49
Updated: 07/07/2025 20:10
Changes: 08/13/2020 15:49 (46), 08/13/2020 15:54 (2), 11/09/2020 20:23 (2), 11/09/2020 20:26 (8), 07/07/2025 20:10 (19)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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