Vulnerability Name:

CVE-2020-9939 (CCN-186449)

Assigned:2020-08-10
Published:2020-08-10
Updated:2020-10-29
Summary:This issue was addressed with improved checks. This issue is fixed in macOS Catalina 10.15.6. A local user may be able to load unsigned kernel extensions.
CVSS v3 Severity:6.4 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): 
Attack Complexity (AC): 
Privileges Required (PR): 
User Interaction (UI): 
Scope:Scope (S): 
Impact Metrics:Confidentiality (C): 
Integrity (I): 
Availibility (A): 
8.2 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H)
7.1 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): 
Attack Complexity (AC): 
Privileges Required (PR): 
User Interaction (UI): 
Scope:Scope (S): 
Impact Metrics:Confidentiality (C): 
Integrity (I): 
Availibility (A): 
CVSS v2 Severity:4.4 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
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-367
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2020-9939

Source: XF
Type: UNKNOWN
apple-macos-cve20209939-priv-esc(186449)

Source: CCN
Type: Apple security document HT211289
About the security content of macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra

Source: MISC
Type: Vendor Advisory
https://support.apple.com/kb/HT211289

Source: CCN
Type: ZDI-20-960
(Pwn2Own) Apple macOS kextload Time-Of-Check Time-Of-Use Memory Corruption Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/o:apple:mac_os_x:*:*:*:*:*:*:*:* (Version < 10.15.6)

    • Configuration CCN 1:
  • cpe:/o:apple:macos_catalina:10.15.5:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Vulnerability Name:

    CVE-2020-9939 (CCN-186645)

    Assigned:2020-08-05
    Published:2020-08-05
    Updated:2020-08-05
    Summary:Apple macOS could allow a local authenticated attacker to bypass security restrictions, caused by improper input validation by the Sandbox component. By sending a specially-crafted request, an attacker could exploit this vulnerability to load unsigned kernel extensions.
    CVSS v3 Severity:6.4 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H)
    5.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
    Exploitability Metrics:Attack Vector (AV): 
    Attack Complexity (AC): 
    Privileges Required (PR): 
    User Interaction (UI): 
    Scope:Scope (S): 
    Impact Metrics:Confidentiality (C): 
    Integrity (I): 
    Availibility (A): 
    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): 
    Attack Complexity (AC): 
    Privileges Required (PR): 
    User Interaction (UI): 
    Scope:Scope (S): 
    Impact Metrics:Confidentiality (C): 
    Integrity (I): 
    Availibility (A): 
    CVSS v2 Severity:4.4 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P)
    Exploitability Metrics:Access Vector (AV): Local
    Access Complexity (AC): Medium
    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 Consequences:Bypass Security
    References:Source: MITRE
    Type: CNA
    CVE-2020-9939

    Source: XF
    Type: UNKNOWN
    apple-macos-cve20209939-sec-bypass(186645)

    Source: CCN
    Type: Apple security document HT211289
    About the security content of macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra

    Vulnerable Configuration:Configuration CCN 1:
  • cpe:/o:apple:macos_catalina:10.15.5:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    apple mac os x *
    apple macos catalina 10.15.5
    apple macos catalina 10.15.5