CVEvulnerability

CVE-2023-30571

5.3 MEDIUM Published 2023-05-29 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-05-29
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.9 LOW — CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
Weaknesses
CWE-362

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.

Affected configurations

• libarchive libarchive (<= 3.6.2)

Related

Weakness · CWE (1)

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness

References