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CVE-2023-30571 Details

Description

Libarchive through 3.6.2 can cause directories to have world-writable permissions. The umask() call inside archive_write_disk_posix.c changes the umask of the whole process for a very short period of time; a race condition with another thread can lead to a permanent umask 0 setting. Such a race condition could lead to implicit directory creation with permissions 0777 (without the sticky bit), which means that any low-privileged local user can delete and rename files inside those directories.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H

CNA: [email protected]CVSS-B:3.9 LOWVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/libarchive/libarchive/issues/1876	CVE	Issue Tracking
https://groups.google.com/g/libarchive-announce	CVE	Release Notes
https://github.com/libarchive/libarchive/issues/1876	[email protected]	Issue Tracking
https://groups.google.com/g/libarchive-announce	[email protected]	Release Notes

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-362	Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')	[email protected]
CWE-362	Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')	CISA-ADP

Affected Products

Product	Versions
libarchive libarchive	<= 3.6.2
CPE cpe:2.3:a:libarchive:libarchive:::::::: Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Jan 14, 2025	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jun 5, 2023	Initial Analysis	[email protected]