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MEDIUM · 5.5

CVE-2021-30738

A malicious application may be able to overwrite arbitrary files. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-004 Mojave. An issue with path validation logic for hardlinks was addr...

Vulnerability Description

A malicious application may be able to overwrite arbitrary files. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-004 Mojave. An issue with path validation logic for hardlinks was addressed with improved path sanitization.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
AppleMac Os X>= 10.14.0, <= 10.14.5
AppleMacos>= 11.0.1, < 11.4

References

FAQ

What is CVE-2021-30738?

CVE-2021-30738 is a vulnerability with a CVSS score of 5.5 (MEDIUM). A malicious application may be able to overwrite arbitrary files. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-004 Mojave. An issue with path validation logic for hardlinks was addr...

How severe is CVE-2021-30738?

CVE-2021-30738 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-30738?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Mac Os X, Apple Macos.