critical9.8Known exploited
CVE-2021-1871
Apple iOS, iPadOS, and macOS WebKit Remote Code Execution Vulnerability
Exploited in the wild
This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2021-11-03. Federal due date: 2021-11-17.
Apply updates per vendor instructions.
Impact
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..
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Apple | Ipados | before 14.4 |
| Apple | Iphone Os | before 14.4 |
| Apple | Mac Os X | from 10.15 before 10.15.7 Version 10.15.7 |
| Apple | Macos | from 11.0.1 before 11.2 |
| Debian | Debian Linux | Version 10.0 |
| Fedoraproject | Fedora | Version 33 |
References
- NVD record
- CVE.org record
- CISA KEV catalog
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/
- https://support.apple.com/en-us/HT212146
- https://support.apple.com/en-us/HT212147
- https://www.debian.org/security/2021/dsa-4923
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/
- https://support.apple.com/en-us/HT212146
- https://support.apple.com/en-us/HT212147
- https://www.debian.org/security/2021/dsa-4923
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1871