Apple iCloud up to 11.5 on Windows ImageIO out-of-bounds

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Apple iCloud up to 11.5 on Windows. It has been rated as critical. Affected is an unknown function of the component ImageIO. This manipulation causes out-of-bounds. This vulnerability is registered as CVE-2020-29617. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in Apple iCloud up to 11.5 on Windows (Cloud Software). Affected by this vulnerability is an unknown function of the component ImageIO. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 01/26/2021 by Xingwei Lin as HT212145 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2020-29617. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The advisory points out:

Processing a maliciously crafted image may lead to heap corruption

Upgrading to version 12.0 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 read was addressed with improved input validation.

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Productinfo

Type

Cloud Software

Vendor

Apple

Name

iCloud

Version

License

free

Website

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

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

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

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: iCloud 12.0

Timelineinfo

12/08/2020 🔍
01/26/2021 +49 days 🔍
01/26/2021 +0 days 🔍
01/28/2021 +2 days 🔍
02/20/2021 +23 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT212145
Researcher: Xingwei Lin
Status: Confirmed

CVE: CVE-2020-29617 (🔍)
GCVE (CVE): GCVE-0-2020-29617
GCVE (VulDB): GCVE-100-168805

Entryinfo

Created: 01/28/2021 06:30
Updated: 02/20/2021 19:58
Changes: 01/28/2021 06:30 (9), 01/28/2021 06:31 (10), 01/28/2021 06:34 (28), 02/20/2021 19:58 (4)
Complete: 🔍
Cache ID: 216::103