Vulnerability Name:

CVE-2021-31004 (CCN-227417)

Assigned:2021-08-24
Published:2021-08-24
Updated:2022-05-31
Summary:A race condition was addressed with improved locking. This issue is fixed in macOS Monterey 12.0.1, macOS Big Sur 11.5. An application may be able to gain elevated privileges.
CVSS v3 Severity:7.0 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.1 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:5.1 Medium (CVSS v2 Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-362
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2021-31004

Source: XF
Type: UNKNOWN
apple-macos-cve202131004-priv-esc(227417)

Source: CCN
Type: Apple security document HT212602
About the security content of macOS Big Sur 11.5

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212602

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212869

Vulnerable Configuration:Configuration 1:
  • cpe:/o:apple:macos:*:*:*:*:*:*:*:* (Version >= 11.0 and < 11.5)
  • OR cpe:/o:apple:macos:12.0.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:apple:macos_big_sur:11.4:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    apple macos *
    apple macos 12.0.0
    apple macos big sur 11.4