Vulnerability CVE-2021-30796 - CERT Civis.Net

Vulnerability Name:

CVE-2021-30796 (CCN-206129)

Assigned:

2021-07-21

Published:

2021-07-21

Updated:

2021-09-16

Summary:

A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Processing a maliciously crafted image may lead to a denial of service.

CVSS v3 Severity:

6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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): None Integrity (I): None Availibility (A): High

CVSS v2 Severity:

4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C)

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

Vulnerability Type:

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2021-30796

Source: XF
Type: UNKNOWN
apple-macos-cve202130796-dos(206129)

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/HT212601

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

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

Source: CCN
Type: ZDI-21-948
Apple macOS ModelIO USD File Parsing Out-Of-Bounds Write Remote Code Execute Vulnerability

Vulnerable Configuration:

Configuration 1:

cpe:/o:apple:iphone_os:*:*:*:*:*:*:*:* (Version < 14.7)

OR cpe:/o:apple:mac_os_x:10.14:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.0:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.1:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.2:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.3:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.4:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.4:beta4:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.14.5:*:*:*:*:*:*:*

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

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:10.15:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.1:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.2:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.3:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.4:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.5:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.6:*:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.6:-:*:*:*:*:*:*

OR cpe:/o:apple:mac_os_x:10.15.6:supplemental_update:*:*:*:*:*:*

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

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:macos:*:*:*:*:*:*:*:* (Version >= 11.0 and < 11.5)

Configuration CCN 1:

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

Denotes that component is vulnerable