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.
Advisories
Source ID Title
EUVD EUVD EUVD-2023-34952 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 14 Jan 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-01-14T17:07:29.493Z

Reserved: 2023-04-12T00:00:00

Link: CVE-2023-30571

cve-icon Vulnrichment

Updated: 2024-08-02T14:28:51.957Z

cve-icon NVD

Status : Modified

Published: 2023-05-29T20:15:09.513

Modified: 2025-01-14T17:15:11.673

Link: CVE-2023-30571

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-05-29T00:00:00Z

Links: CVE-2023-30571 - Bugzilla

cve-icon OpenCVE Enrichment

No data.