CVE-2020-9943
MEDIUMCVSS 5.5/10EPSS 1.14%
Last modified
CVE-2020-9943 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0, iOS 14.0 and iPadOS 14.0. EPSS estimates a 1.14% chance of exploitation in the next 30 days.
Description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0, iOS 14.0 and iPadOS 14.0. A malicious application may be able to read restricted 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 | < 14.0 |
| Apple | Iphone Os | < 14.0 |
| Apple | Mac Os X | < 11.0.1 |
| Apple | Mac Os X | >= 10.14, < 10.14.6 |
| Apple | Mac Os X | >= 10.15, < 10.15.7 |
| Apple | Mac Os X | 10.14.6 |
| Apple | Mac Os X | 10.15.7 |
| Apple | Tvos | < 14.0 |
| Apple | Watchos | < 7.0 |
References
- http://seclists.org/fulldisclosure/2020/Dec/26Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
- https://support.apple.com/en-us/HT211843Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211844Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211850Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211931Release Notes, Vendor Advisory
- https://support.apple.com/kb/HT212011Vendor Advisory
- http://seclists.org/fulldisclosure/2020/Dec/26Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
- https://support.apple.com/en-us/HT211843Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211844Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211850Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211931Release Notes, Vendor Advisory
- https://support.apple.com/kb/HT212011Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-9943?
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0, iOS 14.0 and iPadOS 14.0. A malicious application may be able to read restricted memory.
How severe is CVE-2020-9943?
CVE-2020-9943 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.14% probability of exploitation in the next 30 days.
How do I fix CVE-2020-9943?
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-2020-9943?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST