CVE-2021-30703 : A double free issue was addressed with improved memory management. This issue is

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.

Published 2021-09-08 15:15:15

Updated 2021-09-17 18:40:49

Source Apple Inc.

View at NVD, CVE.org

Vulnerability category: Memory CorruptionExecute code

Products affected by CVE-2021-30703

Apple » Mac Os X
Versions from including (>=) 10.15 and up to, including, (<=) 10.15.6
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
Matching versions
Apple » Mac Os X
Versions from including (>=) 10.14 and up to, including, (<=) 10.14.5
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6
cpe:2.3:o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2019-001
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-001:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2019-002
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-002:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2019-006
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2019-007
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2020-001
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2020-002
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2020-003
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-003:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2020-004
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-004:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2020-005
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-005:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2020-006
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-006:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2020-007
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-007:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Supplemental Update
cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Supplemental Update 2
cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update_2:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7
cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2020-001
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Supplemental Update
cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2019-004
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2019-005
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2020
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2020-005
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2020-007
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2021-001
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-001:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2021-002
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-002:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2021-001
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2021-003
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-003:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.14.6 Update Security Update 2021-004
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-004:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2021-002
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.7 Update Security Update 2021-003
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*
Matching versions
Apple » Iphone Os
Versions before (<) 14.6
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
Matching versions
Apple » Watchos
Versions before (<) 7.5
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
Matching versions
Apple » Tvos
Versions before (<) 14.6
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
Matching versions
Apple » Macos
Versions from including (>=) 11.0 and before (<) 11.4
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Matching versions
Apple » Ipados
Versions before (<) 14.6
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-30703

EPSS FAQ

0.05%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 12 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-30703

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.2	HIGH	AV:L/AC:L/Au:N/C:C/I:C/A:C	3.9	10.0	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
7.8	HIGH	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	1.8	5.9	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2021-30703

CWE-415 Double Free

The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-30703

https://support.apple.com/en-us/HT212533

About the security content of watchOS 7.5 - Apple Support
Vendor Advisory

CVEs referencing this url
https://support.apple.com/en-us/HT212528

About the security content of iOS 14.6 and iPadOS 14.6 - Apple Support
Vendor Advisory

CVEs referencing this url
https://support.apple.com/en-us/HT212532

About the security content of tvOS 14.6 - Apple Support
Vendor Advisory

CVEs referencing this url
https://support.apple.com/en-us/HT212603

About the security content of Security Update 2021-005 Mojave - Apple Support
Vendor Advisory

CVEs referencing this url
https://support.apple.com/en-us/HT212600

About the security content of Security Update 2021-004 Catalina - Apple Support
Vendor Advisory

CVEs referencing this url
https://support.apple.com/en-us/HT212529

About the security content of macOS Big Sur 11.4 - Apple Support
Vendor Advisory

CVEs referencing this url

Jump to

Vulnerability Details : CVE-2021-30703

Products affected by CVE-2021-30703

Exploit prediction scoring system (EPSS) score for CVE-2021-30703

CVSS scores for CVE-2021-30703

CWE ids for CVE-2021-30703

References for CVE-2021-30703