Apple macOS up to 11.3.0 WebKit memory corruption

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

A vulnerability has been found in Apple macOS up to 11.3.0 (Operating System) and classified as critical. This vulnerability affects an unknown code of the component WebKit. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 05/03/2021 by yangkang as HT212335 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability was named CVE-2021-30665. Successful exploitation requires user interaction by the victim. Technical details are unknown but a private exploit is available. The advisory points out:

Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

It is declared as highly functional. This issue was added on 11/03/2021 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 11/17/2021:

Apply updates per vendor instructions.

Upgrading to version 11.3.1 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 was addressed with improved state management.

The entries VDB-174510, VDB-174513, VDB-174515 and VDB-174516 are related to this item.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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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

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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Highly functional

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EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍

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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 11.3.1

Timelineinfo

04/13/2021 🔍
05/03/2021 +20 days 🔍
05/03/2021 +0 days 🔍
05/06/2021 +3 days 🔍
04/21/2024 +1081 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT212335
Researcher: yangkang
Status: Confirmed

CVE: CVE-2021-30665 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20180712
See also: 🔍

Entryinfo

Created: 05/06/2021 09:13
Updated: 04/21/2024 16:22
Changes: 05/06/2021 09:13 (19), 05/06/2021 09:17 (30), 05/09/2021 07:17 (1), 04/21/2024 16:22 (23)
Complete: 🔍
Cache ID: 3:7F7:103

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