#VU48179 Out-of-bounds read in watchOS


Published: 2020-11-06 | Updated: 2021-03-31

Vulnerability identifier: #VU48179

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-27909

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 attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the CoreAudio subsystem when processing MP4 media files. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

watchOS: 7.0 18R382 - 7.0.3 18R410


External links
http://support.apple.com/en-us/HT211928
http://www.zerodayinitiative.com/advisories/ZDI-21-374/


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.


Latest bulletins with this vulnerability