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.
CVSS Metrics
- Vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
- Attack Vector
- local
- Complexity
- high
- Privileges
- low
- User Action
- required
- Scope
- changed
- Confidentiality
- low
- Integrity
- low
- Availability
- none
- Weaknesses
- CWE-362CWE-362
Metadata
- Primary Vendor
- LIBARCHIVE
- Published
- 5/29/2023
- Last Modified
- 1/14/2025
- Source
- NIST NVD
- Note: Verify all details with official vendor sources before applying patches.
Affected Products
libarchive : libarchive
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