CVE-2021-30851

Description

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to code execution.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.83% Top 30%
Vendor Advisory debian.org Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: Apple iOS and iPadOS
Affected: Apple tvOS
Affected: Apple Safari
Affected: Apple watchOS
Published at:
Updated at:

References

Link Tags
https://support.apple.com/en-us/HT212814
https://support.apple.com/en-us/HT212819
https://support.apple.com/en-us/HT212815
https://support.apple.com/en-us/HT212816
https://support.apple.com/kb/HT212869
https://www.debian.org/security/2021/dsa-4995 vendor advisory
https://www.debian.org/security/2021/dsa-4996 vendor advisory
http://www.openwall.com/lists/oss-security/2021/10/31/1 mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-30851?
CVE-2021-30851 has been scored as a high severity vulnerability.
How to fix CVE-2021-30851?
To fix CVE-2021-30851, 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-2021-30851 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-30851 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-2021-30851?
CVE-2021-30851 affects Apple iOS and iPadOS, Apple tvOS, Apple Safari, Apple watchOS.
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