Apple macOS up to 11.5.2 FontParser Remote Code Execution

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Apple macOS up to 11.5.2. This affects an unknown part of the component FontParser. Such manipulation leads to an unknown weakness. This vulnerability is documented as CVE-2021-30841. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple macOS up to 11.5.2 (Operating System). It has been rated as critical. Affected by this issue is an unknown functionality of the component FontParser. Impacted is confidentiality, integrity, and availability.

The weakness was released 09/13/2021 by Xingwei Lin as HT212804 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability is handled as CVE-2021-30841. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The advisory points out:

Processing a maliciously crafted dfont file may lead to arbitrary code execution

Upgrading to version 11.6 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.

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Productinfo

Type

Vendor

Name

Version

License

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: macOS 11.6

Timelineinfo

04/13/2021 🔍
09/13/2021 +153 days 🔍
09/13/2021 +0 days 🔍
09/21/2021 +8 days 🔍
09/30/2021 +9 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT212804
Researcher: Xingwei Lin
Status: Confirmed

CVE: CVE-2021-30841 (🔍)
GCVE (CVE): GCVE-0-2021-30841
GCVE (VulDB): GCVE-100-183086
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 09/21/2021 11:20
Updated: 09/30/2021 13:41
Changes: 09/21/2021 11:20 (18), 09/21/2021 11:23 (28), 09/30/2021 13:41 (1)
Complete: 🔍
Cache ID: 216::103

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