Apple iCloud up to 11.4 on Windows ImageIO out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Apple iCloud up to 11.4 on Windows. This impacts an unknown function of the component ImageIO. The manipulation results in out-of-bounds write. This vulnerability is identified as CVE-2020-9876. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Apple iCloud up to 11.4 on Windows (Cloud Software). Affected is some unknown functionality of the component ImageIO. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 12/02/2020 by Mickey Jin as HT211935 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is traded as CVE-2020-9876. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The advisory points out:

Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution

Upgrading to version 11.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

An out-of-bounds write issue was addressed with improved bounds checking.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: iCloud 11.5

Timelineinfo

03/02/2020 🔍
12/02/2020 +275 days 🔍
12/02/2020 +0 days 🔍
12/06/2020 +4 days 🔍
12/13/2020 +6 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT211935
Researcher: Mickey Jin
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-9876 (🔍)
GCVE (CVE): GCVE-0-2020-9876
GCVE (VulDB): GCVE-100-165636

Entryinfo

Created: 12/06/2020 17:41
Updated: 12/13/2020 00:21
Changes: 12/06/2020 17:41 (12), 12/06/2020 17:42 (7), 12/06/2020 17:45 (28), 12/13/2020 00:16 (6), 12/13/2020 00:21 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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