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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2023-05-29T00:00:00

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

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

Link: CVE-2023-30571

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

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

Modified: 2023-06-05T16:40:57.930

Link: CVE-2023-30571

cve-icon Redhat

Severity : Moderate

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

Links: CVE-2023-30571 - Bugzilla