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CVE-2021-30858

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6....

Basic Information

CVE State
PUBLISHED
Reserved Date
April 13, 2021
Published Date
August 24, 2021
Last Updated
January 29, 2025
Vendor
Apple
Product
macOS, iOS
Description
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Tags
macos ios cisa

CVSS Scores

CVSS v3.1

8.8 - HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2.0

6.8

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

SSVC Information

Exploitation
active
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (2021-11-03 00:00:00 UTC) Source

References

https://support.apple.com/en-us/HT212804 https://support.apple.com/en-us/HT212807 http://seclists.org/fulldisclosure/2021/Sep/27 http://seclists.org/fulldisclosure/2021/Sep/25 http://seclists.org/fulldisclosure/2021/Sep/29 http://www.openwall.com/lists/oss-security/2021/09/20/1 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BO6DMTHZR57JDBOXPSNR2MKDMCRWV265/ http://seclists.org/fulldisclosure/2021/Sep/38 http://seclists.org/fulldisclosure/2021/Sep/39 https://www.debian.org/security/2021/dsa-4975 https://www.debian.org/security/2021/dsa-4976 https://support.apple.com/kb/HT212824 http://seclists.org/fulldisclosure/2021/Sep/50 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XYNV7ASK4LQVAUMJXNXBS3Z7RVDQ2N3W/ http://www.openwall.com/lists/oss-security/2021/10/26/9 http://www.openwall.com/lists/oss-security/2021/10/27/1 http://www.openwall.com/lists/oss-security/2021/10/27/2 http://www.openwall.com/lists/oss-security/2021/10/27/4

Known Exploited Vulnerability Information

Source Added Date
CISA 2021-11-03 00:00:00 UTC

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Added to KEVIntel