CVE-2021-1884: Race Condition
Published Apr 26, 2021
·Updated
A race condition was addressed with improved locking. This issue is fixed in Security Update 2021-004 Mojave, iOS 14.5 and iPadOS 14.5, watchOS 7.4, Security Update 2021-003 Catalina, tvOS 14.5, macOS Big Sur 11.3. A remote attacker may be able to cause a denial of service.
Other sources
Heimdal. A race condition was addressed with improved locking.
Credit
Gabe Kirkpatrick@@gabe_k
Affected Software
41 affected componentsFixes available
Apple macOS Big Sur<11.3
11.3
Apple tvOS<14.5
14.5
Apple Catalina
Apple Mojave
Apple WatchOS<7.4
7.4
Apple iOS<14.5
14.5
Apple iPadOS<14.5
14.5
Apple iPadOS<14.5
Apple iPhone OS<14.5
Apple iOS and macOS>=10.14.0<10.14.6
Apple iOS and macOS>=10.15<10.15.7
Apple iOS and macOS=10.14.6
Apple iOS and macOS=10.14.6-security_update_2019-001
Apple iOS and macOS=10.14.6-security_update_2019-002
Apple iOS and macOS=10.14.6-security_update_2019-004
Apple iOS and macOS=10.14.6-security_update_2019-005
Apple iOS and macOS=10.14.6-security_update_2019-006
Apple iOS and macOS=10.14.6-security_update_2019-007
Apple iOS and macOS=10.14.6-security_update_2020-001
Apple iOS and macOS=10.14.6-security_update_2020-002
Apple iOS and macOS=10.14.6-security_update_2020-003
Apple iOS and macOS=10.14.6-security_update_2020-004
Apple iOS and macOS=10.14.6-security_update_2020-005
Apple iOS and macOS=10.14.6-security_update_2020-006
Apple iOS and macOS=10.14.6-security_update_2020-007
Apple iOS and macOS=10.14.6-security_update_2021-001
Apple iOS and macOS=10.14.6-security_update_2021-002
Apple iOS and macOS=10.14.6-security_update_2021-003
Apple iOS and macOS=10.14.6-supplemental_update
Apple iOS and macOS=10.14.6-supplemental_update_2
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-security_update_2020
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-security_update_2020-005
Apple iOS and macOS=10.15.7-security_update_2020-007
Apple iOS and macOS=10.15.7-security_update_2021-001
Apple iOS and macOS=10.15.7-security_update_2021-002
Apple iOS and macOS=10.15.7-supplemental_update
Apple macOS>=11.0<11.3
Apple tvOS<14.5
Apple WatchOS<7.4
Event History
Sep 8, 2021
CVE Published
via MITRE·02:49 PM
Data Sourced
via MITRE·02:49 PM
DescriptionWeakness
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2021-1853
- CVE-2021-1849
- CVE-2021-1867
- CVE-2021-1810
- CVE-2021-1808
- CVE-2021-1857
- CVE-2021-30752
- CVE-2021-30664
- CVE-2021-1846
- CVE-2021-1809
- CVE-2021-30659
- CVE-2021-1847
- CVE-2021-1811
- CVE-2020-8284
- CVE-2020-8286
- CVE-2020-8285
- CVE-2021-1784
- CVE-2021-1872
- CVE-2021-1881
- CVE-2021-1882
- CVE-2021-1813
- CVE-2021-1883
- CVE-2021-1884
- CVE-2021-1880
- CVE-2021-30653
- CVE-2021-1814
- CVE-2021-1843
- CVE-2021-1885
- CVE-2021-1858
- CVE-2021-30743
- CVE-2021-30658
- CVE-2021-1841
- CVE-2021-1834
- CVE-2021-1860
- CVE-2021-1840
- CVE-2021-1851
- CVE-2021-1832
- CVE-2021-30660
- CVE-2021-30652
- CVE-2021-1875
- CVE-2021-1824
- CVE-2021-1859
- CVE-2021-1876
- CVE-2021-1815
- CVE-2021-1739
- CVE-2021-1740
- CVE-2021-1861
- CVE-2021-1855
- CVE-2021-1868
- CVE-2021-30750
- CVE-2021-1878
- CVE-2021-30657
- CVE-2021-30856
- CVE-2020-8037
- CVE-2021-1839
- CVE-2021-1825
- CVE-2021-1817
- CVE-2021-1826
- CVE-2021-1820
- CVE-2021-30661
- CVE-2020-7463
- CVE-2021-1828
- CVE-2021-1829
- CVE-2021-30655
- CVE-2021-1770
- CVE-2021-1873
- CVE-2021-1836
- CVE-2021-30764
- CVE-2021-1864
- CVE-2021-1816
- CVE-2021-1822
- CVE-2021-1844
- CVE-2021-30676
- CVE-2021-30678
- CVE-2021-30688
- CVE-2021-30669
- CVE-2021-30685
- CVE-2021-30686
- CVE-2021-30681
- CVE-2021-30724
- CVE-2021-30673
- CVE-2020-29629
- CVE-2021-30684
- CVE-2021-30735
- CVE-2021-30710
- CVE-2021-30697
- CVE-2021-30683
- CVE-2021-30687
- CVE-2021-30701
- CVE-2021-30705
- CVE-2021-30728
- CVE-2021-30719
- CVE-2021-30726
- CVE-2021-30704
- CVE-2021-30715
- CVE-2021-30739
- CVE-2021-30702
- CVE-2021-30696
- CVE-2021-30819
- CVE-2021-30723
- CVE-2021-30691
- CVE-2021-30694
- CVE-2021-30692
- CVE-2021-30746
- CVE-2021-30693
- CVE-2021-30695
- CVE-2021-30708
- CVE-2021-30709
- CVE-2021-30725
- CVE-2021-30679
- CVE-2020-36226
- CVE-2020-36229
- CVE-2020-36225
- CVE-2020-36224
- CVE-2020-36223
- CVE-2020-36227
- CVE-2020-36228
- CVE-2020-36221
- CVE-2020-36222
- CVE-2020-36230
- CVE-2021-30737
- CVE-2021-30716
- CVE-2021-30717
- CVE-2021-30712
- CVE-2021-30721
- CVE-2021-30722
- CVE-2021-30671
- CVE-2021-30690
- CVE-2021-30738
- CVE-2021-1807
- CVE-2021-1835
- CVE-2021-1837
- CVE-2021-30742
- CVE-2021-1812
- CVE-2021-30656
- CVE-2021-30662
- CVE-2021-1877
- CVE-2021-1852
- CVE-2021-1830
- CVE-2021-1874
- CVE-2021-1833
- CVE-2021-1865
- CVE-2021-1863
- CVE-2021-1831
- CVE-2021-1862
- CVE-2021-1854
- CVE-2021-30921
- CVE-2021-1848
Frequently Asked Questions
1
What is the vulnerability ID?
The vulnerability ID is CVE-2021-1884.
2
What is the title of the vulnerability?
The title of the vulnerability is 'Heimdal. A race condition was addressed with improved locking.'
3
What software versions are affected?
The affected software versions are Apple iOS up to version 14.5, Apple iPadOS up to version 14.5, Apple watchOS up to version 7.4, Apple macOS Big Sur up to version 11.3, Apple tvOS up to version 14.5, and Apple Catalina and Mojave.
4
How severe is the vulnerability?
The severity of the vulnerability is not mentioned in the provided information.
5
What is the remedy for this vulnerability?
The remedy for this vulnerability is to update the affected software versions to the specified versions where the vulnerability is addressed.