Apple tvOS up to 14.4 WebKit Storage use after free

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

A vulnerability, which was classified as critical, was found in Apple tvOS up to 14.4 (Digital Media Player). This affects an unknown functionality of the component WebKit Storage. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 04/26/2021 by yangkang as HT212323 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2021-30661. It demands that the victim is doing some kind of user interaction. 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.

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:

A use after free issue was addressed with improved memory management.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

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

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Highly functional

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: tvOS 14.5

Timelineinfo

04/13/2021 🔍
04/26/2021 +13 days 🔍
04/26/2021 +0 days 🔍
04/27/2021 +1 days 🔍
05/01/2021 +4 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT212323
Researcher: yangkang
Status: Confirmed

CVE: CVE-2021-30661 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/27/2021 11:00
Updated: 05/01/2021 10:15
Changes: 04/27/2021 11:00 (17), 04/27/2021 11:01 (2), 04/27/2021 11:04 (29), 05/01/2021 10:15 (1)
Complete: 🔍

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