CVE-2021-30977

A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.1, Security Update 2021-008 Catalina, macOS Big Sur 11.6.2. A malicious application may be able to execute arbitrary code with kernel privileges.
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.8 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
appleCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 72%
VendorProductVersion
applemac_os_x
10.15 ≤
𝑥
< 10.15.7
applemac_os_x
10.15.7
applemac_os_x
10.15.7:security_update_2020-001
applemac_os_x
10.15.7:security_update_2021-001
applemac_os_x
10.15.7:security_update_2021-002
applemac_os_x
10.15.7:security_update_2021-003
applemac_os_x
10.15.7:security_update_2021-004
applemac_os_x
10.15.7:security_update_2021-005
applemac_os_x
10.15.7:security_update_2021-006
applemac_os_x
10.15.7:security_update_2021-007
applemac_os_x
10.15.7:supplemental_update
applemacos
11.0 ≤
𝑥
< 11.6.2
applemacos
12.0 ≤
𝑥
< 12.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://support.apple.com/en-us/HT212978
https://support.apple.com/en-us/HT212979
https://support.apple.com/en-us/HT212981
https://support.apple.com/kb/HT213183
https://support.apple.com/en-us/HT212978
https://support.apple.com/en-us/HT212979
https://support.apple.com/en-us/HT212981
https://support.apple.com/kb/HT213183