CVE-2021-30738

A malicious application may be able to overwrite arbitrary files. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-004 Mojave. An issue with path validation logic for hardlinks was addressed with improved path sanitization.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
appleCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 19%
VendorProductVersion
applemac_os_x
10.14.0 ≤
𝑥
≤ 10.14.5
applemac_os_x
10.14.6
applemac_os_x
10.14.6:security_update_2019-001
applemac_os_x
10.14.6:security_update_2019-002
applemac_os_x
10.14.6:security_update_2019-004
applemac_os_x
10.14.6:security_update_2019-005
applemac_os_x
10.14.6:security_update_2019-006
applemac_os_x
10.14.6:security_update_2019-007
applemac_os_x
10.14.6:security_update_2020-001
applemac_os_x
10.14.6:security_update_2020-002
applemac_os_x
10.14.6:security_update_2020-003
applemac_os_x
10.14.6:security_update_2020-004
applemac_os_x
10.14.6:security_update_2020-005
applemac_os_x
10.14.6:security_update_2020-006
applemac_os_x
10.14.6:security_update_2020-007
applemac_os_x
10.14.6:security_update_2021-001
applemac_os_x
10.14.6:security_update_2021-002
applemac_os_x
10.14.6:security_update_2021-003
applemac_os_x
10.14.6:supplemental_update
applemac_os_x
10.14.6:supplemental_update_2
applemacos
11.0.1 ≤
𝑥
< 11.4
𝑥
= Vulnerable software versions
References
https://support.apple.com/en-us/HT212529
https://support.apple.com/en-us/HT212531
https://support.apple.com/en-us/HT212529
https://support.apple.com/en-us/HT212531