CVE-2021-1739 : A parsing issue in the handling of directory paths was addressed with improved p

A parsing issue in the handling of directory paths was addressed with improved path validation. This issue is fixed in Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. A local user may be able to modify protected parts of the file system.

Published 2021-09-08 15:15:09

Updated 2021-09-15 14:02:12

Source Apple Inc.

View at NVD, CVE.org

Vulnerability category: Directory traversal

Products affected by CVE-2021-1739

Apple » Mac Os X
Versions from including (>=) 10.15 and up to, including, (<=) 10.15.5
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: 10.15.7
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: 10.15.6
cpe:2.3:o:apple:mac_os_x:10.15.6:-:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15.6 Update Supplemental Update
cpe:2.3:o:apple:mac_os_x:10.15.6:supplemental_update:*:*:*:*:*:*
Matching versions
Apple » Mac Os X » Version: 10.15
cpe:2.3:o:apple:mac_os_x:10.15:*:*:*:*:*:*:*
Matching versions
Apple » Iphone Os
Versions before (<) 14.5
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
Matching versions
Apple » Watchos
Versions before (<) 7.4
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
Matching versions
Apple » Tvos
Versions before (<) 14.5
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
Matching versions
Apple » Macos
Versions from including (>=) 11.0 and before (<) 11.3
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Matching versions
Apple » Ipados
Versions before (<) 14.5
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-1739

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-2021-1739

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
2.1	LOW	AV:L/AC:L/Au:N/C:N/I:P/A:N	3.9	2.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
5.5	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N	1.8	3.6	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: High Availability: None

CWE ids for CVE-2021-1739

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-1739

https://support.apple.com/en-us/HT212317

About the security content of iOS 14.5 and iPadOS 14.5 - Apple Support
Vendor Advisory

CVEs referencing this url
https://support.apple.com/en-us/HT212323

About the security content of tvOS 14.5 - Apple Support
Vendor Advisory

CVEs referencing this url
https://support.apple.com/en-us/HT212327

About the security content of Security Update 2021-003 Mojave - Apple Support
Vendor Advisory

CVEs referencing this url
https://support.apple.com/en-us/HT212326

About the security content of Security Update 2021-002 Catalina - Apple Support
Vendor Advisory

CVEs referencing this url
https://support.apple.com/en-us/HT212325

About the security content of macOS Big Sur 11.3 - Apple Support
Vendor Advisory

CVEs referencing this url
https://support.apple.com/en-us/HT212324

About the security content of watchOS 7.4 - Apple Support
Vendor Advisory

CVEs referencing this url

Jump to

Vulnerability Details : CVE-2021-1739

Products affected by CVE-2021-1739

Exploit prediction scoring system (EPSS) score for CVE-2021-1739

CVSS scores for CVE-2021-1739

CWE ids for CVE-2021-1739

References for CVE-2021-1739