CVE-2021-30831
MEDIUMCVSS 5.5/10EPSS 0.83%
Last modified
CVE-2021-30831 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An out-of-bounds read was addressed with improved input validation. This issue is fixed in tvOS 15, watchOS 8, iOS 15 and iPadOS 15. EPSS estimates a 0.83% chance of exploitation in the next 30 days.
Description
An out-of-bounds read was addressed with improved input validation. This issue is fixed in tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted font may result in the disclosure of process memory.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 15.0 |
| Apple | Iphone Os | < 15.0 |
| Apple | Macos | < 12.0.1 |
| Apple | Tvos | < 15.0 |
| Apple | Watchos | < 8.0 |
References
- https://support.apple.com/en-us/HT212814Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212815Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212819Release Notes, Vendor Advisory
- https://support.apple.com/kb/HT212869Vendor Advisory
- https://support.apple.com/en-us/HT212814Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212815Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212819Release Notes, Vendor Advisory
- https://support.apple.com/kb/HT212869Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-30831?
An out-of-bounds read was addressed with improved input validation. This issue is fixed in tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted font may result in the disclosure of process memory.
How severe is CVE-2021-30831?
CVE-2021-30831 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.83% probability of exploitation in the next 30 days.
How do I fix CVE-2021-30831?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-30831?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST