Information disclosure in Apple macOS



Published: 2021-07-22
Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2021-30764
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
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macOS
Operating systems & Components / Operating system

Vendor Apple Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU55253

Risk: Medium

CVSSv3.1: 5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-30764

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the ImageIO framework. A remote attacker can create a specially crafted WEBP file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

macOS: 10.14 18A391 - 11.5 20G71

External links

http://www.zerodayinitiative.com/advisories/ZDI-21-893/


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.



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