CVE-2021-30977

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.1, Security Update 2021-008 Catalina, macOS Big Sur 11.6.2. A malicious application may be able to execute arbitrary code with kernel privileges.

References

Link	Tags
https://support.apple.com/en-us/HT212978
https://support.apple.com/en-us/HT212979
https://support.apple.com/en-us/HT212981
https://support.apple.com/kb/HT213183

Frequently Asked Questions

What is the severity of CVE-2021-30977?: CVE-2021-30977 has been scored as a high severity vulnerability.
How to fix CVE-2021-30977?: To fix CVE-2021-30977, 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-2021-30977 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-30977 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-30977?: CVE-2021-30977 affects Apple macOS, Apple macOS, Apple macOS.

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Description

Category

CWE-120 – Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

References

Frequently Asked Questions