Apple watchOS up to 7.3.3 Heimdal denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Apple watchOS up to 7.3.3. Affected by this issue is some unknown functionality of the component Heimdal. Executing a manipulation can lead to denial of service. This vulnerability is handled as CVE-2021-1884. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Apple watchOS up to 7.3.3 (Smartwatch Operating System). It has been declared as problematic. This vulnerability affects an unknown function of the component Heimdal. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The weakness was released 04/26/2021 by Gabe Kirkpatrick as HT212324 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2021-1884. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499. The advisory points out:

A remote attacker may be able to cause a denial of service

Upgrading to version 7.4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

A race condition was addressed with improved locking.

Once again VulDB remains the best source for vulnerability data.

Productinfo

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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: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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: watchOS 7.4

Timelineinfo

12/08/2020 🔍
04/26/2021 +138 days 🔍
04/26/2021 +0 days 🔍
04/27/2021 +1 days 🔍
05/01/2021 +4 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT212324
Researcher: Gabe Kirkpatrick
Status: Confirmed

CVE: CVE-2021-1884 (🔍)
GCVE (CVE): GCVE-0-2021-1884
GCVE (VulDB): GCVE-100-174076

Entryinfo

Created: 04/27/2021 11:18
Updated: 05/01/2021 11:24
Changes: 04/27/2021 11:18 (16), 04/27/2021 11:19 (2), 04/27/2021 11:22 (28), 05/01/2021 11:24 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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