Vulnerability identifier: #VU34807

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3877

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
watchOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3, watchOS 6.1.2. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.

Mitigation
Install update from vendor's website.

Vulnerable software versions

watchOS: 6.1.1

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External links
http://support.apple.com/HT210919
http://support.apple.com/HT210921

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.