Vulnerability CVE-2021-30703 - CERT Civis.Net

Vulnerability Name:

CVE-2021-30703 (CCN-206125)

Assigned:

2021-07-21

Published:

2021-07-21

Updated:

2021-09-17

Summary:

A double free issue was addressed with improved memory management. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave, macOS Big Sur 11.4, watchOS 7.5. An application may be able to execute arbitrary code with kernel privileges.

CVSS v3 Severity:

7.8 High (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 (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

7.8 High (CCN 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 (CCN 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

CVSS v2 Severity:

7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

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:

Vulnerability Consequences:

Gain Privileges

References:

Source: MITRE
Type: CNA
CVE-2021-30703

Source: XF
Type: UNKNOWN
apple-macos-cve202130703-priv-esc(206125)

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212528

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212529

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212532

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212533

Source: CCN
Type: Apple security document HT212600
About the security content of Security Update 2021-004 Catalina

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212600

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212603

Vulnerable Configuration:

Configuration 1:

cpe:/o:apple:ipados:*:*:*:*:*:*:*:* (Version < 14.6)

OR cpe:/o:apple:iphone_os:*:*:*:*:*:*:*:* (Version < 14.6)

OR cpe:/o:apple:mac_os_x:*:*:*:*:*:*:*:* (Version >= 10.14 and <= 10.14.5)

OR cpe:/o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2019-001:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2019-002:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-003:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-004:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-005:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-006:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2020-007:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2021-001:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2021-002:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2021-003:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:security_update_2021-004:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:supplemental_update:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.6:supplemental_update_2:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:*:*:*:*:*:*:*:* (Version >= 10.15 and <= 10.15.6)

OR cpe:/o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*

OR cpe:/o:apple:macos:*:*:*:*:*:*:*:* (Version >= 11.0 and < 11.4)

OR cpe:/o:apple:tvos:*:*:*:*:*:*:*:* (Version < 14.6)

OR cpe:/o:apple:watchos:*:*:*:*:*:*:*:* (Version < 7.5)

Configuration CCN 1:

cpe:/o:apple:macos_catalina:10.15.2:*:*:*:*:*:*:*

Denotes that component is vulnerable