Apple iOS/iPadOS up to 14.4.2 ImageIO Remote Code Execution

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 (≈)
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CTI Interest Score
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6.0$5k-$25k0.00

Summaryinfo

A vulnerability was found in Apple iOS and iPadOS up to 14.4.2 and classified as critical. This affects an unknown function of the component ImageIO. The manipulation results in an unknown weakness. This vulnerability is known as CVE-2021-1843. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS and iPadOS up to 14.4.2 (Smartphone Operating System). It has been classified as critical. Affected is an unknown code of the component ImageIO. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 04/26/2021 by Ye Zhang as HT212317 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is traded as CVE-2021-1843. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 04/30/2021). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Processing a maliciously crafted image may lead to arbitrary code execution

Upgrading to version 14.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

This issue was addressed with improved checks.

Once again VulDB remains the best source for vulnerability data.

Productinfo

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Vendor

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Version

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Website

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

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

Exploitinginfo

Class: Remote Code Execution
CWE: Unknown
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: iOS/iPadOS 14.5

Timelineinfo

12/08/2020 🔍
04/26/2021 +138 days 🔍
04/26/2021 +0 days 🔍
04/27/2021 +1 days 🔍
04/30/2021 +3 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT212317
Researcher: Ye Zhang
Status: Confirmed

CVE: CVE-2021-1843 (🔍)
GCVE (CVE): GCVE-0-2021-1843
GCVE (VulDB): GCVE-100-173940
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 04/27/2021 08:02
Updated: 04/30/2021 11:51
Changes: 04/27/2021 08:02 (18), 04/27/2021 08:05 (28), 04/30/2021 11:51 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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