CVE-2020-9977

Description

A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. This issue is fixed in macOS Big Sur 11.0.1, iOS 14.0 and iPadOS 14.0. A malicious application may be able to determine a user's open tabs in Safari.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.36%
Vendor Advisory apple.com Vendor Advisory apple.com
Affected: Apple iOS and iPadOS
Affected: Apple macOS
Published at:
Updated at:

References

Link Tags
https://support.apple.com/en-us/HT211850 vendor advisory
https://support.apple.com/en-us/HT211931 vendor advisory
http://seclists.org/fulldisclosure/2020/Dec/32 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2020-9977?
CVE-2020-9977 has been scored as a medium severity vulnerability.
How to fix CVE-2020-9977?
To fix CVE-2020-9977, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-9977 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-9977 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-9977?
CVE-2020-9977 affects Apple iOS and iPadOS, Apple macOS.
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