CVE-2021-30858

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Summary

CVECVE-2021-30858
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-08-24 19:15:00 UTC
Updated2023-11-07 03:33:00 UTC
DescriptionA 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.

Risk And Classification

EPSS: 0.007940000 probability, percentile 0.739070000 (date 2026-04-01)

CISA KEV: Listed on 2021-11-03; due 2021-11-17; ransomware use Unknown

Problem Types: CWE-416

CISA Known Exploited Vulnerability

VendorApple
ProductiOS, iPadOS, and macOS
NameApple iOS, iPadOS, macOS Use-After-Free Vulnerability
Required ActionApply updates per vendor instructions.
Noteshttps://nvd.nist.gov/vuln/detail/CVE-2021-30858

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Apple Ipados All All All All
Operating System Apple Iphone Os All All All All
Operating System Apple Macos All All All All
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 11.0 All All All
Operating System Fedoraproject Fedora 33 All All All
Operating System Fedoraproject Fedora 34 All All All

References

ReferenceSourceLinkTags
[SECURITY] Fedora 33 Update: webkit2gtk3-2.32.4-1.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
oss-security - Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 MLIST www.openwall.com
About the security content of iOS 12.5.5 - Apple Support CONFIRM support.apple.com
Full Disclosure: APPLE-SA-2021-09-20-7 Additional information for APPLE-SA-2021-09-13-3 macOS Big Sur 11.6 seclists.org
oss-security - Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 www.openwall.com
Debian -- Security Information -- DSA-4976-1 wpewebkit www.debian.org
[SECURITY] Fedora 34 Update: webkit2gtk3-2.32.4-1.fc34 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
Full Disclosure: APPLE-SA-2021-09-13-1 iOS 14.8 and iPadOS 14.8 FULLDISC seclists.org
Full Disclosure: APPLE-SA-2021-09-13-5 Safari 14.1.2 seclists.org
oss-security - Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 MLIST www.openwall.com
[SECURITY] Fedora 34 Update: webkit2gtk3-2.32.4-1.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2021-0005 www.openwall.com
Full Disclosure: APPLE-SA-2021-09-23-1 iOS 12.5.5 seclists.org
Full Disclosure: APPLE-SA-2021-09-13-3 macOS Big Sur 11.6 seclists.org
[SECURITY] Fedora 33 Update: webkit2gtk3-2.32.4-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
Full Disclosure: APPLE-SA-2021-09-20-6 Additional information for APPLE-SA-2021-09-13-1 iOS 14.8 and iPadOS 14.8 seclists.org
oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 www.openwall.com
Debian -- Security Information -- DSA-4975-1 webkit2gtk DEBIAN www.debian.org
About the security content of macOS Big Sur 11.6 - Apple Support support.apple.com
About the security content of iOS 14.8 and iPadOS 14.8 - Apple Support MISC support.apple.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Legacy QID Mappings

  • 159448 Oracle Enterprise Linux Security Update for webkit2gtk3 (ELSA-2021-4097)
  • 159587 Oracle Enterprise Linux Security Update for webkitgtk4 (ELSA-2022-0059)
  • 178797 Debian Security Update for webkit2gtk (DSA 4975-1)
  • 178800 Debian Security Update for wpewebkit (DSA 4976-1)
  • 184336 Debian Security Update for webkit2gtkwpewebkit (CVE-2021-30858)
  • 198513 Ubuntu Security Notification for WebKitGTK Vulnerabilities (USN-5087-1)
  • 239766 Red Hat Update for webkit2gtk3 (RHSA-2021:4097)
  • 239896 Red Hat Update for webkit2gtk3 (RHSA-2021:4686)
  • 239991 Red Hat Update for webkit2gtk3 (RHSA-2022:0075)
  • 239993 Red Hat Update for webkitgtk4 (RHSA-2022:0059)
  • 281919 Fedora Security Update for webkit2gtk3 (FEDORA-2021-c00e45b6c0)
  • 281959 Fedora Security Update for webkit2gtk3 (FEDORA-2021-edf6957b7d)
  • 296061 Oracle Solaris 11.4 Support Repository Update (SRU) 42.113.1 Missing (CPUJAN2022)
  • 296065 Oracle Solaris 11.4 Support Repository Update (SRU) 39.107.1 Missing (CPUOCT2021)
  • 353163 Amazon Linux Security Advisory for webkitgtk4 : ALAS2-2022-1747
  • 354436 Amazon Linux Security Advisory for webkit2gtk3 : ALAS2022-2022-015
  • 375855 Apple MacOS Big Sur 11.6 Not Installed (HT212804)
  • 375857 Apple Safari Arbitrary Code Execution Vulnerability (HT212808)
  • 377406 Alibaba Cloud Linux Security Update for webkit2gtk3 (ALINUX3-SA-2021:0079)
  • 377459 Alibaba Cloud Linux Security Update for webkitgtk4 (ALINUX2-SA-2022:0003)
  • 502197 Alpine Linux Security Update for webkit2gtk
  • 502394 Alpine Linux Security Update for webkit2gtk
  • 505522 Alpine Linux Security Update for webkit2gtk
  • 610367 Apple iOS 14.8 and iPadOS 14.8 Security Update Missing
  • 610369 Apple iOS 12.5.5 Security Update Missing (HT212824)
  • 690026 Free Berkeley Software Distribution (FreeBSD) Security Update for webkit2-gtk3 (576aa394-1d85-11ec-8b7d-4f5b624574e2)
  • 710570 Gentoo Linux WebkitGTK+ Multiple Vulnerabilities (GLSA 202202-01)
  • 751190 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2021:3282-1)
  • 751194 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2021:3296-1)
  • 751221 OpenSUSE Security Update for webkit2gtk3 (openSUSE-SU-2021:3353-1)
  • 751247 OpenSUSE Security Update for webkit2gtk3 (openSUSE-SU-2021:1369-1)
  • 751623 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2022:0142-1)
  • 751646 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2022:0183-1)
  • 751648 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2022:0182-1)
  • 751659 OpenSUSE Security Update for webkit2gtk3 (openSUSE-SU-2022:0182-1)
  • 751755 OpenSUSE Security Update for webkit2gtk3 (openSUSE-SU-2022:0182-2)
  • 940168 AlmaLinux Security Update for webkit2gtk3 (ALSA-2021:4097)
  • 960051 Rocky Linux Security Update for webkit2gtk3 (RLSA-2021:4097)
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