Vulnerability Description
An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A malicious application may be able to disclose kernel memory.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 14.4 |
| Apple | Iphone Os | < 14.4 |
| Apple | Mac Os X | >= 10.14, < 10.14.6 |
| Apple | Macos | >= 11.0, < 11.2 |
| Apple | Tvos | < 14.4 |
| Apple | Watchos | < 7.3 |
Related Weaknesses (CWE)
References
- https://support.apple.com/en-us/HT212146Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212147Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212148Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212149Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212146Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212147Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212148Release NotesVendor Advisory
- https://support.apple.com/en-us/HT212149Release NotesVendor Advisory
FAQ
What is CVE-2021-1791?
CVE-2021-1791 is a vulnerability with a CVSS score of 5.5 (MEDIUM). An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 ...
How severe is CVE-2021-1791?
CVE-2021-1791 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-1791?
Check the references section above for vendor advisories and patch information. Affected products include: Apple Ipados, Apple Iphone Os, Apple Mac Os X, Apple Macos, Apple Tvos.