CVE-2021-1871 Information

Description

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2 Security Update 2021-001 Catalina Security Update 2021-001 Mojave iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://support.apple.com/en-us/HT212146 https://support.apple.com/en-us/HT212147 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ https://www.debian.org/security/2021/dsa-4923

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8