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LIN1021-5847 : Security Advisory - libarchive - CVE-2023-30571

Created: May 30, 2023    Updated: May 28, 2025
Resolved Date: May 21, 2025
Found In Version: 10.21.20.1
Fix Version: 10.21.20.25
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Userspace

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.

CREATE(Triage):(User=admin) CVE-2023-30571 (https://nvd.nist.gov/vuln/detail/CVE-2023-30571)

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