CVE-2021-30884

Reference Links

• https://support.apple.com/en-us/HT212814 (Advisory)
• https://support.apple.com/en-us/HT212815 (Advisory)
• https://support.apple.com/en-us/HT212819 (Advisory)
• https://support.apple.com/en-us/HT212869 (Advisory)
• http://www.openwall.com/lists/oss-security/2021/12/20/6
• https://support.apple.com/kb/HT212869

Parent vulnerabilities

(Appears in the following advisories)

• HT212815
• HT212819
• HT212869
• HT212814

Peer vulnerabilities

(Found alongside the following vulnerabilities)

• CVE-2021-30837
• CVE-2021-30838
• CVE-2021-30866
• CVE-2021-30834
• CVE-2021-30928
• CVE-2021-30831
• CVE-2021-30840
• CVE-2021-30841
• CVE-2021-30842
• CVE-2021-30843
• CVE-2021-30852
• CVE-2021-30814
• CVE-2021-30835
• CVE-2021-30847
• CVE-2021-30857
• CVE-2013-0340
• CVE-2021-30855
• CVE-2021-30854
• CVE-2021-30850
• CVE-2021-30808
• CVE-2021-30897
• CVE-2021-30884
• CVE-2021-30818
• CVE-2021-30823
• CVE-2021-30836
• CVE-2021-30809
• CVE-2021-30846
• CVE-2021-30849
• CVE-2021-30851
• CVE-2021-30810
• CVE-2021-30811
• CVE-2021-30882
• CVE-2021-30925
• CVE-2021-30873
• CVE-2021-30876
• CVE-2021-30879
• CVE-2021-30877
• CVE-2021-30880
• CVE-2021-30994
• CVE-2021-30907
• CVE-2021-30899
• CVE-2021-30931
• CVE-2021-30917
• CVE-2021-30903
• CVE-2021-30905
• CVE-2021-30919
• CVE-2020-9846
• CVE-2021-30881
• CVE-2021-30923
• CVE-2021-30895
• CVE-2021-30896
• CVE-2021-30933
• CVE-2021-30906
• CVE-2021-30867
• CVE-2021-30922
• CVE-2021-30824
• CVE-2021-30901
• CVE-2021-30821
• CVE-2021-30883
• CVE-2021-30924
• CVE-2021-30886
• CVE-2021-30909
• CVE-2021-30916
• CVE-2021-30864
• CVE-2021-30813
• CVE-2021-31011
• CVE-2021-30904
• CVE-2021-30910
• CVE-2021-30911
• CVE-2021-30874
• CVE-2021-30920
• CVE-2021-31004
• CVE-2021-31002
• CVE-2021-30868
• CVE-2021-30912
• CVE-2021-30913
• CVE-2021-30915
• CVE-2021-31005
• CVE-2021-31008
• CVE-2021-30848
• CVE-2021-30887
• CVE-2021-30888
• CVE-2021-30889
• CVE-2021-30861
• CVE-2021-30890
• CVE-2021-30930
• CVE-2021-30908
• CVE-2021-30833
• CVE-2021-30892
• CVE-2021-30825
• CVE-2021-30863
• CVE-2021-30816
• CVE-2021-30819
• CVE-2021-30898
• CVE-2021-30870
• CVE-2021-30815
• CVE-2021-31001
• CVE-2021-30826

Frequently Asked Questions

• What is CVE-2021-30884 and what software is affected?

  CVE-2021-30884 is a vulnerability in WebKit that affects Apple watchOS 8, Apple iOS up to version 15, Apple iPadOS up to version 15, Apple tvOS up to version 15, and Apple macOS Monterey up to version 12.0.1.

• What is the severity of CVE-2021-30884?

  The severity of CVE-2021-30884 is not specified.

• How does CVE-2021-30884 impact CSS compositing in WebKit?

  CVE-2021-30884 introduces additional restrictions on CSS compositing in WebKit to address the vulnerability.

• How can I fix CVE-2021-30884?

  To fix CVE-2021-30884, update your Apple watchOS to version 8 or later, Apple iOS, Apple iPadOS, Apple tvOS, or Apple macOS Monterey to version 15 or later.

• Where can I find more information about CVE-2021-30884?

  You can find more information about CVE-2021-30884 on Apple's official support page: [https://support.apple.com/en-us/HT212814](https://support.apple.com/en-us/HT212814)