Vulnerability Name:

CVE-2020-9853 (CCN-190394)

Assigned:2020-09-21
Published:2020-09-21
Updated:2021-07-21
Summary:A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Catalina 10.15.4. A malicious application may be able to determine kernel memory layout.
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/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): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/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): None
Availibility (A): None
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-119
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2020-9853

Source: XF
Type: UNKNOWN
apple-macos-cve20209853-info-disc(190394)

Source: CCN
Type: Apple security document HT211100
About the security content of macOS Catalina 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra

Source: MISC
Type: Vendor Advisory
https://support.apple.com/kb/HT211100

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/o:apple:macos_high_sierra:10.13.6:*:*:*:*:*:*:*
  • OR cpe:/o:apple:macos_mojave:10.14.6:*:*:*:*:*:*:*
  • OR cpe:/o:apple:macos_catalina:10.15.3:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    apple macos high sierra 10.13.6
    apple macos mojave 10.14.6
    apple macos catalina 10.15.3