CRITICAL

CVE-2021-1871

Debian Debian Linux 2021-04-02 CVSS v3.1

CVSS

9.8

KEV

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..

Summary dbcve.org

A logic vulnerability in Apple macOS and iOS allows remote attackers to execute arbitrary code. This was being actively exploited in the wild as a zero-day. The specific technical details of the logic flaw are not disclosed in available documentation, but the issue was addressed with improved restrictions in the cited updates.

Mitigation

Apply the available security updates: iOS 14.4 and iPadOS 14.4 for mobile devices; macOS Big Sur 11.2, Security Update 2021-001 Catalina, or Security Update 2021-001 Mojave for Mac systems. Prioritize deployment given active exploitation.

EPSS Score

Probability of exploitation in next 30 days

93.9th percentile

References

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ Broken Link, Mailing List https://support.apple.com/en-us/HT212146 Release Notes, Vendor Advisory https://support.apple.com/en-us/HT212147 Release Notes, Vendor Advisory https://www.debian.org/security/2021/dsa-4923 Mailing List, Third Party Advisory https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1871 US Government Resource

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

Back to CVE