Apple macOS up to 11.3 Security memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Apple macOS up to 11.3. This issue affects some unknown processing of the component Security. The manipulation leads to memory corruption. This vulnerability is documented as CVE-2021-30737. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple macOS up to 11.3 (Operating System). It has been rated as critical. This issue affects some unknown functionality of the component Security. 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 released 05/24/2021 by xerub as HT212529 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2021-30737. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The advisory points out:

Processing a maliciously crafted certificate may lead to arbitrary code execution

Upgrading to version 11.4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

A memory corruption issue in the ASN.1 decoder was addressed by removing the vulnerable code.

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Productinfo

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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: 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: macOS 11.4

Timelineinfo

04/13/2021 🔍
05/24/2021 +41 days 🔍
05/24/2021 +0 days 🔍
05/25/2021 +1 days 🔍
05/28/2021 +3 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT212529
Researcher: xerub
Status: Confirmed

CVE: CVE-2021-30737 (🔍)
GCVE (CVE): GCVE-0-2021-30737
GCVE (VulDB): GCVE-100-175751
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 05/25/2021 14:29
Updated: 05/28/2021 15:19
Changes: 05/25/2021 14:29 (19), 05/25/2021 14:32 (28), 05/28/2021 15:19 (4)
Complete: 🔍
Cache ID: 216::103

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