CVE-2021-30951: Use After Free
First published: Tue Aug 24 2021(Updated: )
A use after free issue was addressed with improved memory management. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.
Credit: Chijin Zhou ShuiMuYuLin LtdTsinghua wingtecher lab Pangu via Tianfu Cup Pangu cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/webkit2gtk | 2.36.4-1~deb10u1 2.38.6-0+deb10u1 2.40.5-1~deb11u1 2.42.1-1~deb11u2 2.40.5-1~deb12u1 2.42.1-1~deb12u1 2.42.1-2 | |
| debian/wpewebkit | 2.38.6-1~deb11u1 2.38.6-1 2.42.1-1 | |
| Apple macOS Monterey | <12.1 | 12.1 |
| tvOS | <15.2 | 15.2 |
| Apple Mobile Safari | <15.2 | 15.2 |
| Apple iOS, iPadOS, and watchOS | <15.2 | 15.2 |
| Apple iOS, iPadOS, and watchOS | <15.2 | 15.2 |
| Apple iOS, iPadOS, and watchOS | <8.3 | 8.3 |
| Apple Mobile Safari | <15.2 | |
| Apple iOS, iPadOS, and watchOS | <15.2 | |
| iStyle @cosme iPhone OS | <15.2 | |
| Apple iOS and macOS | >=12.0.0<12.1 | |
| tvOS | <15.2 | |
| Apple iOS, iPadOS, and watchOS | <8.3 | |
| Fedora | =34 | |
| Debian | =10.0 | |
| Debian | =11.0 | |
| Fedora | =35 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://webkitgtk.org/security/WSA-2022-0001.html
- https://security-tracker.debian.org/tracker/CVE-2021-30951
- https://support.apple.com/en-us/HT212982 (Advisory)
- https://support.apple.com/en-us/HT212978 (Advisory)
- https://support.apple.com/en-us/HT212975 (Advisory)
- https://support.apple.com/en-us/HT212980 (Advisory)
- http://www.openwall.com/lists/oss-security/2022/01/21/2
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/
- https://support.apple.com/en-us/HT212976 (Advisory)
- https://www.debian.org/security/2022/dsa-5060
- https://www.debian.org/security/2022/dsa-5061
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2021-30987
- CVE-2021-30950
- CVE-2021-30960
- CVE-2021-30986
- CVE-2021-30966
- CVE-2021-30926
- CVE-2021-30942
- CVE-2021-30957
- CVE-2021-30958
- CVE-2021-30935
- CVE-2021-30945
- CVE-2021-31007
- CVE-2021-31013
- CVE-2021-31000
- CVE-2021-30977
- CVE-2021-30939
- CVE-2021-30981
- CVE-2021-30996
- CVE-2021-30982
- CVE-2021-30937
- CVE-2021-30927
- CVE-2021-30980
- CVE-2021-30949
- CVE-2021-30993
- CVE-2021-30955
- CVE-2021-30976
- CVE-2021-30990
- CVE-2021-30943
- CVE-2021-31009
- CVE-2021-30971
- CVE-2021-30973
- CVE-2021-30929
- CVE-2021-30979
- CVE-2021-30940
- CVE-2021-30941
- CVE-2021-30995
- CVE-2021-30968
- CVE-2021-30946
- CVE-2021-30947
- CVE-2021-30975
- CVE-2021-30944
- CVE-2021-30972
- CVE-2021-30767
- CVE-2021-30964
- CVE-2021-30970
- CVE-2021-30965
- CVE-2021-30934
- CVE-2021-30936
- CVE-2021-30951
- CVE-2021-30952
- CVE-2021-30984
- CVE-2021-30953
- CVE-2021-30954
- CVE-2021-30938
- CVE-2021-30962
- CVE-2021-30916
- CVE-2021-30956
- CVE-2021-30992
- CVE-2021-30983
- CVE-2021-30985
- CVE-2021-30991
- CVE-2021-30998
- CVE-2021-30997
- CVE-2021-30967
- CVE-2021-30988
- CVE-2021-30932
- CVE-2021-30948
Frequently Asked Questions
What is CVE-2021-30951?
CVE-2021-30951 is a use after free issue in WebKit that has been addressed with improved memory management.
Who is affected by CVE-2021-30951?
Apple macOS Monterey, Apple Safari, Apple iOS, Apple iPadOS, Apple watchOS, and Apple tvOS versions up to, but not including, 12.1, 15.2, or 8.3 respectively are affected by CVE-2021-30951.
How severe is CVE-2021-30951?
The severity of CVE-2021-30951 is not explicitly mentioned.
How can I fix CVE-2021-30951?
To fix CVE-2021-30951, it is recommended to update to macOS Monterey version 12.1, Safari version 15.2, iOS version 15.2, iPadOS version 15.2, watchOS version 8.3, or tvOS version 15.2.
Where can I find more information about CVE-2021-30951?
More information about CVE-2021-30951 can be found on the Apple security updates page at the following URLs: [https://support.apple.com/en-us/HT212978](https://support.apple.com/en-us/HT212978), [https://support.apple.com/en-us/HT212980](https://support.apple.com/en-us/HT212980), [https://support.apple.com/en-us/HT212975](https://support.apple.com/en-us/HT212975).
- collector/security-tracker-debian
- collector/apple-support
- alias/CVE-2021-30951
- agent/type
- agent/weakness
- agent/severity
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/references
- agent/first-publish-date
- agent/event
- agent/trending
- agent/source
- agent/software-canonical-lookup-request
- agent/author
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- package-manager/debian
- vendor/apple
- canonical/apple macos monterey
- canonical/tvos
- canonical/apple mobile safari
- canonical/apple ios, ipados, and watchos
- canonical/istyle @cosme iphone os
- canonical/apple ios and macos
- version/apple ios and macos/12.0.0
- vendor/fedoraproject
- canonical/fedora
- version/fedora/34
- vendor/debian
- canonical/debian
- version/debian/10.0
- version/debian/11.0
- version/fedora/35