CVE-2025-45582

GNU Tar through 1.35 allows file overwrite via directory traversal in crafted TAR archives, with a certain two-step process. First, the victim must extract an archive that contains a ../ symlink to a critical directory. Second, the victim must extract an archive that contains a critical file, specified via a relative pathname that begins with the symlink name and ends with that critical file's name. Here, the extraction follows the symlink and overwrites the critical file. This bypasses the protection mechanism of "Member name contains '..'" that would occur for a single TAR archive that attempted to specify the critical file via a ../ approach. For example, the first archive can contain "x -> ../../../../../home/victim/.ssh" and the second archive can contain x/authorized_keys. This can affect server applications that automatically extract any number of user-supplied TAR archives, and were relying on the blocking of traversal. This can also affect software installation processes in which "tar xf" is run more than once (e.g., when installing a package can automatically install two dependencies that are set up as untrusted tarballs instead of official packages).
References
Link Resource
https://github.com/i900008/vulndb/blob/main/Gnu_tar_vuln.md Exploit Third Party Advisory
https://www.gnu.org/software/tar/ Product Release Notes
Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:*

History

17 Jul 2025, 13:09

Type Values Removed Values Added
CPE cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:*
References () https://github.com/i900008/vulndb/blob/main/Gnu_tar_vuln.md - () https://github.com/i900008/vulndb/blob/main/Gnu_tar_vuln.md - Exploit, Third Party Advisory
References () https://www.gnu.org/software/tar/ - () https://www.gnu.org/software/tar/ - Product, Release Notes
First Time Gnu
Gnu tar

15 Jul 2025, 13:14

Type Values Removed Values Added
New CVE

Information

Published : 2025-07-11 17:15

Updated : 2025-07-17 13:09


NVD link : CVE-2025-45582

Mitre link : CVE-2025-45582

CVE.ORG link : CVE-2025-45582


JSON object : View

Products Affected

gnu

  • tar
CWE
CWE-24

Path Traversal: '../filedir'